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Study sets matching "muscle physiology"

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Study sets matching "muscle physiology"

84 terms
Muscle Physiology
What are the three muscle types?
List characteristics of skeletal muscle
List characteristics of cardiac muscle
Describe the structure of muscle
1) Skeletal... 2) Cardiac... 3) Smooth
-voluntary... -multinucleated... -elongated... -striated... -a lot of mit…
-involuntary... -single nucleus... -elongated... -striated... -branched... -…
Muscle fiber --> myofibril --> sarcomere (contractile unit) -…
What are the three muscle types?
1) Skeletal... 2) Cardiac... 3) Smooth
List characteristics of skeletal muscle
-voluntary... -multinucleated... -elongated... -striated... -a lot of mit…
52 terms
Muscle Physiology
fascia
aponeuroses
epimysium
perimysium
dense connective tissue covering muscles
fascia on sheet muscles
outer layer of muscle
connective tissue dividing muscles into fascicles
fascia
dense connective tissue covering muscles
aponeuroses
fascia on sheet muscles
96 terms
Muscle Physiology
Function of skeletal muscle (3)
basic overview of embryonic myogenesis
Process of embryonic myogenesis (7)
What are Myogenic regulatory factors (…
-Force generation for Locomotion and Breathing... -Force generat…
1. Someites from mesoderm of embryo ---> ... 2. Myoblast--->... 3.…
1. Myoblast fuse ---> myotube... 2. Myotubes enclosed by basemen…
Muscle devlopemnt
Function of skeletal muscle (3)
-Force generation for Locomotion and Breathing... -Force generat…
basic overview of embryonic myogenesis
1. Someites from mesoderm of embryo ---> ... 2. Myoblast--->... 3.…
Muscle Physiology
prime mover
antagonist
synergist
fixator
muscle within a group of muscles that accomplishes the primar…
muscle within a group of muscles that opposes the primary mov…
a muscle that works with and assists the action of a prime mo…
muscle within a group of muscles that stabilizes, or braces t…
prime mover
muscle within a group of muscles that accomplishes the primar…
antagonist
muscle within a group of muscles that opposes the primary mov…
82 terms
Muscle Physiology
I Band
A Band
H Zone
M Line
Thin filaments only on myofibril
Both thick and thin filaments (dark bands) on myofibril
Thick filaments only that are within the A Band of a myofibril
Anchors thick filaments with elastic fibers on myofibril
I Band
Thin filaments only on myofibril
A Band
Both thick and thin filaments (dark bands) on myofibril
33 terms
Muscle Physiology
Muscles cell
Skeletal muscle
sarcolemma
sarcoplasm
a device that turns ATP into mechanical energy of movement
Holds the body erect against the pull of gravity and produces…
plasma membrane of muscles cell
cytoplasm of muscle cell
Muscles cell
a device that turns ATP into mechanical energy of movement
Skeletal muscle
Holds the body erect against the pull of gravity and produces…
15 terms
Muscle Physiology
Striated Muscle cells
The functional unit of a muscles
Alpha motor nueron
Sarcoplasmic reticulum
Voluntary... Multi nucleated ... Fast contraction ... Part of motor un…
Motor unit
Synapses with thousands of muscles fibers
intracellular organelle that store and release Ca2+ ions
Striated Muscle cells
Voluntary... Multi nucleated ... Fast contraction ... Part of motor un…
The functional unit of a muscles
Motor unit
26 terms
Muscle Physiology
Muscle Properties
Skeletal Muscle
Skeletal muscle fiber internal organiz…
Skeletal muscle fiber internal organiz…
Excitability- capacity of muscle to respond to a stimulus... Con…
attached to bones, Makes up to 40% of body weight, Responsibl…
the cell membrane of a muscle fiber, surrounds the sarcoplasm…
Transmit the Action Potential through the cell , allow the en…
Muscle Properties
Excitability- capacity of muscle to respond to a stimulus... Con…
Skeletal Muscle
attached to bones, Makes up to 40% of body weight, Responsibl…
42 terms
Muscle Physiology
Skeletal Muscle
Cardiac Muscle
Smooth Muscle
Properties of Muscle Tissue
Striated... Voluntary... Attached to bone, skin or fascia
Striated... Involuntary... Autorhythmic (built in pacemaker)
Nonstriated... Involuntary... Hair follicles in skin, walls of holl…
1. Excitability... 2. Contractility... 3. Conductivity... 4. Extensibi…
Skeletal Muscle
Striated... Voluntary... Attached to bone, skin or fascia
Cardiac Muscle
Striated... Involuntary... Autorhythmic (built in pacemaker)
32 terms
Muscle Physiology
Muscle fibre
Sarcolemma
Myofilaments
Sarcomere
Long cell, cylindrical, multi-nucleated.
Role in contraction of muscle (shorten muscle), rod-like prot…
Smallest repetitive unit, made of myofilaments (thick and thi…
Muscle fibre
Long cell, cylindrical, multi-nucleated.
Sarcolemma
31 terms
Muscle Physiology
Skeletal Muscle
Smooth Muscle
Cardiac Muscle
Tendon
Voluntary muscle that attaches to bones to provide movement f…
Involuntary muscle that lines systems such as the digestive t…
Involuntary muscle of the heart
tough connective tissue that attaches muscle to bone
Skeletal Muscle
Voluntary muscle that attaches to bones to provide movement f…
Smooth Muscle
Involuntary muscle that lines systems such as the digestive t…
48 terms
Muscle Physiology
What is a muscle fiber?
What are transverse tubule (t-tubules)?
What is the sarcoplasmic reticulum?
What are myofibrils?
A large multi-nucleated muscle cell formed by fusion of many…
Invaginations of the sarcolemma (plasma membrane) that carry…
Modified endoplasmic reticulum found in muscle cells that rel…
Intracellular structures found within muscle fiber that conta…
What is a muscle fiber?
A large multi-nucleated muscle cell formed by fusion of many…
What are transverse tubule (t-tubules)?
Invaginations of the sarcolemma (plasma membrane) that carry…
59 terms
Muscle Physiology
Muscle is mainly made up of ______
Muscle Types: (2)
Smooth muscle
Smooth muscle types: (2)
cytoskeleton
1. Smooth Muscle... 2. Striated Muscle
• No visible striations... • Slow contractionn*, internal organs
• Peristalsis... • Vasculature... Both of these muscles are voluntary
Muscle is mainly made up of ______
cytoskeleton
Muscle Types: (2)
1. Smooth Muscle... 2. Striated Muscle
28 terms
Muscle Physiology
Skeletal Muscle
Cardiac Muscle
Smooth Muscle
Excitability
Striated... Voluntary... Attached to bone, skin or fascia
Striated... Involuntary... Autorhythmic (built in pacemaker)
Nonstriated... Involuntary... Hair follicles in skin, walls of holl…
Response to chemicals released from nerve cells
Skeletal Muscle
Striated... Voluntary... Attached to bone, skin or fascia
Cardiac Muscle
Striated... Involuntary... Autorhythmic (built in pacemaker)
13 terms
Physiology of Muscle Contraction
Multipolar neuron
Motor neuron
Neuromuscular Junction
Synaptic Cleft
The most common type of neuron found in the body
A nerve cell that stimulates muscle fibers to create motion
Consists of three components:... (1) Motor neuron... (2) Synaptic c…
Space between the end of a neuron and binding site of sarcole…
Multipolar neuron
The most common type of neuron found in the body
Motor neuron
A nerve cell that stimulates muscle fibers to create motion
29 terms
Muscle Physiology
Skeletal Muscle
Cardiac Muscle
Smooth Muscle
Properties of Muscle Tissue
Striated... Voluntary... Attached to bone, skin or fascia
Striated... Involuntary... Autorhythmic (built in pacemaker)
Nonstriated... Involuntary... Hair follicles in skin, walls of holl…
1. Excitability... 2. Contractility... 3. Conductivity... 4. Extensibi…
Skeletal Muscle
Striated... Voluntary... Attached to bone, skin or fascia
Cardiac Muscle
Striated... Involuntary... Autorhythmic (built in pacemaker)
12 terms
Muscle physiology
crossbridge
muscle fatigue
acetylcholine
ATP
The connection between actin and myosin to cause contraction
The condition in which the muscle is no longer able to contract
What is the neurotransmitter of muscle tissue nerves?
What molecule is necessary to release myosin from actin
crossbridge
The connection between actin and myosin to cause contraction
muscle fatigue
The condition in which the muscle is no longer able to contract
37 terms
Muscle Physiology
Dihydropyridine receptors
Ryanodine receptors
Skeletal muscles
Smooth muscles
Located in T-tubules; undergo voltage dependent conformationa…
Located in SR; Ca2+ channel
Use calcium stored in the SR
Use extracellular calcium and calcium stored in the SR
Dihydropyridine receptors
Located in T-tubules; undergo voltage dependent conformationa…
Ryanodine receptors
Located in SR; Ca2+ channel
45 terms
Muscle Physiology
Spinal Relfex Arcs
Final Common Pathway
Nueromuscular junction uses
Sarcolemma
Excitatory and Inhibitory
Motor Neuron
ACh & nAChRs
plasma membrane
Spinal Relfex Arcs
Excitatory and Inhibitory
Final Common Pathway
Motor Neuron
86 terms
Muscle Physiology
Skeletal muscle
Long and cylindrical
Peripherally located, multiple
Yes
What muscle is attatched to bone
What shape are the cells of skeletal muscle
Where are skeletal muscle nuclei located/ and how many per cell
Does skeletal muscle have striations
Skeletal muscle
What muscle is attatched to bone
Long and cylindrical
What shape are the cells of skeletal muscle
8 terms
Muscle Physiology
Skeletal muscle
Motorunit
Neuromuscular Junctions
Effects of drugs on Skeletal Neuromusc…
Multicellulate, voluntary, striated ... part of the somatic nerv…
Is a single motorneuron plus all the muscle cells it controls…
A nervel cell communicating with a muscle cell. ACh for skele…
1) NEUROMUSCULAR BLOCKERS: e.g curare, it fits into the choli…
Skeletal muscle
Multicellulate, voluntary, striated ... part of the somatic nerv…
Motorunit
Is a single motorneuron plus all the muscle cells it controls…
26 terms
Muscle Physiology
ALS -- amyotropic lateral sclerosis
Somatic motor neurons
Synapse
NMJ
-nerve cells whose cell bodies are in the brainstem
point where a nerve fiber meets its target cell
Junction between axon terminal and motor neuron and the motor…
ALS -- amyotropic lateral sclerosis
Somatic motor neurons
-nerve cells whose cell bodies are in the brainstem
109 terms
Muscle Physiology
Anchor for thin filaments.
Anchor for thick filaments.
Dark area; extends length of the thick…
Light area; thin myofilaments only (Z…
Z line (disc).
M line.
A band.
I band.
Anchor for thin filaments.
Z line (disc).
Anchor for thick filaments.
M line.
102 terms
Muscle Physiology
z line (disc)
M line
A band
I band
anchor for thin filaments
anchor for thick filaments
dark area; extends length of the thick filaments
light area; thin myofilaments only (Z disc is center of this)
z line (disc)
anchor for thin filaments
M line
anchor for thick filaments
35 terms
Muscle Physiology
What are the three muscle types?
List characteristics of skeletal muscle
List characteristics of cardiac muscle
Describe the structure of a muscle fiber
1) Skeletal... 2) Cardiac... 3) Smooth
-voluntary... -multinucleated... -elongated... -striated... -a lot of mit…
-involuntary... -single nucleus... -elongated... -striated... -branched... -…
Muscle fiber --> myofibril --> sarcomere (contractile unit) -…
What are the three muscle types?
1) Skeletal... 2) Cardiac... 3) Smooth
List characteristics of skeletal muscle
-voluntary... -multinucleated... -elongated... -striated... -a lot of mit…
20 terms
Muscle Physiology
As an axon enters a muscle, it branche…
the energy source that is directly res…
the segment from one z disc to the next
this chemical carries the stimulating…
motor unit
ATP
sarcomere
acetylcholine
As an axon enters a muscle, it branche…
motor unit
the energy source that is directly res…
ATP
52 terms
Muscle Physiology
Muscle structure
Why is skeletal muscle multi-nucleated?
created by the overlap of filaments
what is the fiber cell membrane called?
tendon > fascia > muscle (epimysium) > fascicle (perimysium)…
Because skeletal muscle cells are large/long cells they must…
striations
sarcolemma
Muscle structure
tendon > fascia > muscle (epimysium) > fascicle (perimysium)…
Why is skeletal muscle multi-nucleated?
Because skeletal muscle cells are large/long cells they must…
96 terms
Muscle Physiology
General features of skeletal muscle ce…
Action Potential
Sarcolemma
T-Tubules
1. multinucleated cells... 2. sarcolemma... 3. very long compared t…
electrical charge which occurs along the entire surface of th…
special name for plasma membrane; acts as a barrier between t…
transverse tubules: passageways from extracellular space to t…
General features of skeletal muscle ce…
1. multinucleated cells... 2. sarcolemma... 3. very long compared t…
Action Potential
electrical charge which occurs along the entire surface of th…
56 terms
Muscle Physiology
What is muscle?
What are motor neurons?
What is 'the motor unit'?
What happens when a motor neuron is st…
- Contractile tissue which converts ATP into work... - Excitable…
Neurons that synapse with muscle cells
One neuron and all the muscle cells that form junctions with…
All muscle cells it supplies are activated - contract simulta…
What is muscle?
- Contractile tissue which converts ATP into work... - Excitable…
What are motor neurons?
Neurons that synapse with muscle cells
155 terms
muscle physiology
what contains binding sites for myosin…
2 sets of intracellular tubules in ske…
terminal cisternae
transverse tubules
actin
terminal cisternae... transverse (t) tubules
2 larger tubules that run perpendicular to myofibril at junct…
found at each A band/I band junction, are elongated tubes... in…
what contains binding sites for myosin…
actin
2 sets of intracellular tubules in ske…
terminal cisternae... transverse (t) tubules
45 terms
Muscle Physiology
Epimysium
Perimysium
Endomysium
Myosatellite Cells
The Outer-most layer of surrounding connective tissue that en…
The middle layer of surrounding connective tissue that separa…
The inner layer of surrounding connective tissue that surroun…
The stem cells of the muscle fibers that repair muscle fibers…
Epimysium
The Outer-most layer of surrounding connective tissue that en…
Perimysium
The middle layer of surrounding connective tissue that separa…
32 terms
Muscle Physiology
Muscle fibre
Sarcolemma
Myofilaments
Sarcomere
Long cell, cylindrical, multi-nucleated.
Role in contraction of muscle (shorten muscle), rod-like prot…
Smallest repetitive unit, made of myofilaments (thick and thi…
Muscle fibre
Long cell, cylindrical, multi-nucleated.
Sarcolemma
23 terms
Muscle Physiology: Introductory
Muscles produce tensile forces by ____…
Muscle length shortens in this type of…
Muscle length does not change in this…
Muscle lengthens in this type of contr…
Pulling
Concentric contraction
Isometric contraction
Eccentric contraction
Muscles produce tensile forces by ____…
Pulling
Muscle length shortens in this type of…
Concentric contraction
40 terms
Muscle Physiology
sarcomere
z line
m line
I Band
The basic functional unit of skeletal muscle
boundary of a single sarcomere
midline of myosin fibers
region containing thin filaments only (actin)
sarcomere
The basic functional unit of skeletal muscle
z line
boundary of a single sarcomere
30 terms
MUSCLE PHYSIOLOGY
Whole muscle is made of:
Each fascicle contains:
Within each muscle cell there are:
Myofibrils are made of:
Fascicles
Bundles of muscle cells (aka muscle fibres)
Myofibrils
Myofilaments, containing the actual proteins responsible for…
Whole muscle is made of:
Fascicles
Each fascicle contains:
Bundles of muscle cells (aka muscle fibres)
98 terms
Muscle Physiology
striated muscle
skeletal
cardiac
skeletal
cardiac and skeletal
multinucleated cells
uninucleated and branched
somatic neuron control; not influenced by hormones
striated muscle
cardiac and skeletal
skeletal
multinucleated cells
40 terms
Muscle Physiology
cardiac muscle
smooth muscle
skeletal muscle
excitability
involuntary heart beat, branch shaped cells, and intercalated…
voluntary action, multi-nucleated and striated
involuntary action, spindle-shaped cells
responsive and will respond to stimuli
cardiac muscle
involuntary heart beat, branch shaped cells, and intercalated…
smooth muscle
voluntary action, multi-nucleated and striated
82 terms
Muscle Physiology
What are the types of muscle tissue?
What does skeletal muscle do?
Describe the characteristics of skelet…
What does cardiac muscle do?
Skeletal, Cardiac, Smooth
Attaches to bones and is used for movement and maintaining po…
Long/large, cylindrical cells, many nuclei per cell, striated…
Is only found in the heart (main muscle of heart, pumping mas…
What are the types of muscle tissue?
Skeletal, Cardiac, Smooth
What does skeletal muscle do?
Attaches to bones and is used for movement and maintaining po…
Muscle Physiology
What are the functions of the muscular…
Organization of the skeletal muscle
Tendons
Aponeurosis
1. Upright posture... 2. Body Movement... 3. Support for abdominal…
Whole muscle is comprised of bundles of muscle fibers called…
Cord-like attachments of muscles to bones, skin or other musc…
a thin flat sheet of fibrous connective tissue that attaches…
What are the functions of the muscular…
1. Upright posture... 2. Body Movement... 3. Support for abdominal…
Organization of the skeletal muscle
Whole muscle is comprised of bundles of muscle fibers called…
45 terms
Physiology - Muscle
Skeletal muscle
Endomysium
Fasciculi
Perimysium
Multineucleated cells called myofibers. ... Made from myoblasts.
Connective tissue that covers a single fiber
Muscle bundles
Sheath of fibrous connective tissue that surrounds fasciculi
Skeletal muscle
Multineucleated cells called myofibers. ... Made from myoblasts.
Endomysium
Connective tissue that covers a single fiber
26 terms
Muscle Physiology
What is the function of myoglobin? Whe…
Compare myoglobin and hemoglobin on th…
What is ATP used for in muscle contrac…
Where is creatine synthesized?
Myoglobin: Binds oxygen in muscle cells and releases it when…
Myoglobin: red; found in muscle cells; binds oxygen in muscle…
1. Na+-K+ pumps: active transport; maintain concentration gra…
1. Liver... 2. Kidneys... 3. Pancreas
What is the function of myoglobin? Whe…
Myoglobin: Binds oxygen in muscle cells and releases it when…
Compare myoglobin and hemoglobin on th…
Myoglobin: red; found in muscle cells; binds oxygen in muscle…
39 terms
Muscle Physiology
What are the three types of muscles?
What are the four general characterist…
What are the six general functions of…
What are the characteristics & functio…
1. Skeletal Muscle ... 2. Cardiac Muscle... 3. Smooth Muscle
1. Excitability - ability to respond to stimulus ... 2. Contract…
- Producing movement ... - Maintaining posture ... - Stabilizing jo…
1. Muscle thats attached to the bones ... 2. Striated ... 3. innerv…
What are the three types of muscles?
1. Skeletal Muscle ... 2. Cardiac Muscle... 3. Smooth Muscle
What are the four general characterist…
1. Excitability - ability to respond to stimulus ... 2. Contract…
46 terms
Muscle Physiology
agonist
antagonist
synergist
insertion
prime mover
opposing
helping muscle
more movable attachment
agonist
prime mover
antagonist
opposing
18 terms
Muscle Physiology
Summation
Tetanus
Incomplete/Unfused tetanus
Complete/Fused tetanus
The time between the action potential shortens, causing the m…
When action potential stimulates muscle fibers repeatedly at…
Stimulation rate of fibers not at their max. & fibers relax s…
Stimulation rate = fast. ... Resulting in the muscle not having…
Summation
The time between the action potential shortens, causing the m…
Tetanus
When action potential stimulates muscle fibers repeatedly at…
Muscle Physiology
Skeletal muscle & Cardiac muscle & Smo…
Skeletal Muscle
Cardiac Muscle
Smooth Muscle
Muscle is classified as three types:
Straited & Voluntary
Striated & Involuntary
Not striated & involuntary
Skeletal muscle & Cardiac muscle & Smo…
Muscle is classified as three types:
Skeletal Muscle
Straited & Voluntary
27 terms
Muscle Physiology
What are the three types of muscles?
What are the four general characterist…
What are the six general functions of…
What are the characteristics & functio…
1. Skeletal Muscle ... 2. Cardiac Muscle... 3. Smooth Muscle
1. Excitability - ability to respond to stimulus ... 2. Contract…
- Producing movement ... - Maintaining posture ... - Stabilizing jo…
1. Muscle thats attached to the bones ... 2. Striated ... 3. innerv…
What are the three types of muscles?
1. Skeletal Muscle ... 2. Cardiac Muscle... 3. Smooth Muscle
What are the four general characterist…
1. Excitability - ability to respond to stimulus ... 2. Contract…
96 terms
Muscle physiology
Presentation:... Skeletal muscle overview
All of our voluntary movement is media…
If we look at how muscles work to coor…
Each fascicle in a muscle is a bundle of
...
shortening of skeletal muscles.
joints so that the shortening of one muscle will cause the le…
muscle fibers/muscle cells.... Each bundle is surrounded by a l…
Presentation:... Skeletal muscle overview
...
All of our voluntary movement is media…
shortening of skeletal muscles.
37 terms
Muscle Physiology
how is muscle excitable tissue?
how is muscle contractile tissue?
describe the process of skeletal muscl…
define sarco
it generates and propagates action potentials
it has the ability to cause movement
myoblasts fuse together to become one myocyte... adult muscle ce…
flesh (lots of blood cells)
how is muscle excitable tissue?
it generates and propagates action potentials
how is muscle contractile tissue?
it has the ability to cause movement
24 terms
Muscle Physiology
What is a twitch in a skeletal muscle?
Where does calcium for muscle contract…
Where does calcium for muscle contract…
Where does calcium for muscle contract…
Contraction of a muscle in response to one AP... Cytoplasmic ca…
Extracellular fluid
SER
SER & extracellular fluid
What is a twitch in a skeletal muscle?
Contraction of a muscle in response to one AP... Cytoplasmic ca…
Where does calcium for muscle contract…
Extracellular fluid
15 terms
Anatomy and Physiology Muscle Physiology
Contractile
Skeletal Muscle
Smooth Muscle
Cardiac Muscle
Having or concerned with the power or property of contracting
An organ of the muscular system, composed primarily of skelet…
•Smooth muscle cells are shorter than the fibers of the skele…
•Appears only in the heart... •Intercalated discs... •Composed of s…
Contractile
Having or concerned with the power or property of contracting
Skeletal Muscle
An organ of the muscular system, composed primarily of skelet…
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