Study sets matching "muscle physiology"

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Study sets matching "muscle physiology"

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
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
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)
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…
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)
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
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
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…
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
43 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
Invaginations of the sarcolemma (plasma membrane) that carry…
Modified endoplasmic reticulum found in muscle cells that car…
Smaller fibers found within muscle fiber that contain the con…
What is a muscle fiber?
A large multi-nucleated muscle cell
What are transverse tubule (t-tubules)?
Invaginations of the sarcolemma (plasma membrane) that carry…
Muscle Physiology
epimysium
perimysium
fascicle
endomysium
connective tissue covering the entire muscle.
connective tissue covering fascicles
made of bundles of muscle fibers
connective tissue covering muscle fibers (cells)
epimysium
connective tissue covering the entire muscle.
perimysium
connective tissue covering fascicles
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
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
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
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
Muscle physiology
........... are responsible for skelet…
Two ........... lie within a single sa…
As thin and thick filaments overlap, t…
Weight lifting causes muscle ........,…
Satellite cells
t-tubules
H and I
hypertrophy
........... are responsible for skelet…
Satellite cells
Two ........... lie within a single sa…
t-tubules
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…
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.
87 terms
Muscle Physiology
Unique Feature of NMJ Fidelity
Motor Neuron and Skeletal Muscle Fiber…
Number of Muscle Types contained in a…
Excitation-Contraction Coupling
Always initiates an Action Potential
1 Motor Neuron controls a motor unit: multiple muscle fibers…
Only one muscle type in a motor unit
Process by which a single action potential produces a twitch…
Unique Feature of NMJ Fidelity
Always initiates an Action Potential
Motor Neuron and Skeletal Muscle Fiber…
1 Motor Neuron controls a motor unit: multiple muscle fibers…
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
38 terms
Muscle physiology
Contractility, Excitability, Extensibi…
Skeletal, smooth, cardiac
Visceral or smooth muscle
Skeletal muscle
What are 4 properties of muscles?
What are the 3 types of muscles?
What type of muscle has no striations, central nucleus, contr…
What type of muscle has striations, peripheral nuclei, contra…
Contractility, Excitability, Extensibi…
What are 4 properties of muscles?
Skeletal, smooth, cardiac
What are the 3 types of muscles?
20 terms
Muscle Physiology
Thin Myofilament
Thick Myofilament
Structure of Skeletal Muscle
Thin Myofilaments... Thin myofilament is…
Actin
Myosin
Skeletal muscle is striated (shows banding pattern under ligh…
1. G-Actin... 2. Tropomyosin... 3. Troponin
Thin Myofilament
Actin
Thick Myofilament
Myosin
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…
Muscle Physiology
Striated Skeletal Muscle
Striated Cardiac Muscle
Unstriated Smooth Muscle
Striated
Voluntary Muscle
Involuntary muscle = heart
Involuntary Muscle
Muscle that show cross straition
Striated Skeletal Muscle
Voluntary Muscle
Striated Cardiac Muscle
Involuntary muscle = heart
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
Muscle Physiology
agonist (prime mover)
antagonist
myofibril
myosin
muscle within a group of muscles that accomplishes the primar…
muscle within a group of muscles that opposes the primary mov…
small fibers that join together to make up a muscle cell
the type of protein that makes up thick myofilaments
agonist (prime mover)
muscle within a group of muscles that accomplishes the primar…
antagonist
muscle within a group of muscles that opposes the primary mov…
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)
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
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…
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
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
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)
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
52 terms
muscle physiology
skeletal muscle
skeletal muscle fibers
sarcolemma
sarcoplasm
muscle fiber ... -single skeletal muscle cell... -multinucleated... -l…
sarcolemma... sarcoplasm... sarcoplasmic reticulum... T-tubulues... myofr…
plasma membrane
cytoplasm of the fiber (cell)
skeletal muscle
muscle fiber ... -single skeletal muscle cell... -multinucleated... -l…
skeletal muscle fibers
sarcolemma... sarcoplasm... sarcoplasmic reticulum... T-tubulues... myofr…
36 terms
Muscle Physiology
Muscles can only work by ___________
The 3 layers of connective tissue surr…
_______ is the cell membrane of a musc…
_______ is the muscle cell cytoplasm
shortening
Epimysium ... Perimysium ... Endomysium
Sarcolemma
Sarcoplasm
Muscles can only work by ___________
shortening
The 3 layers of connective tissue surr…
Epimysium ... Perimysium ... Endomysium
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
Muscle Physiology*
Sarcolemma
Myosin
Actin
Myofibril
protein filament
protien filament
Sarcolemma
Myosin
protein filament
46 terms
Muscle Physiology
agonist
antagonist
synergist
insertion
prime mover
opposing
helping muscle
more movable attachment
agonist
prime mover
antagonist
opposing
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…
56 terms
Physiology Muscle
Fascia
Smooth... Cardiac... Skeletal
Epimysium
Fasciculi
areolar tissue, flexible/elastic and resist tearing; hold the…
What are the types of muscles? (3)
a sheath of fibrous elastic tissue surrounding a muscle
a bundle of muscle cells
Fascia
areolar tissue, flexible/elastic and resist tearing; hold the…
Smooth... Cardiac... Skeletal
What are the types of muscles? (3)
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…
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
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
90 terms
Muscle Physiology
muscle fiber
"muscle"
what can we pull out of muscle fibers
sarcolemma
single skeletal muscle cells... multinucleated
bundle of muscle fibers
muscle filaments
the plasma membrane
muscle fiber
single skeletal muscle cells... multinucleated
"muscle"
bundle of muscle fibers
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