Beth Anderson's Extra Credit due on Nov. 27, 2009 on muscles

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Beth Anderson's Extra Credit due on Nov. 27, 2009 on muscles

testosterone, human growth hormone

what stimulates hypertrophy

myofibrils

thread-like structures which have a contractile function

filaments

function in the contractile process

muscle contraction

release of Ca++ from Sarcoplasmic Reticulum trigers what?

binds oxygen molecules

function of myoglobin

skeletal muscle fiber

each branch of the axon from the somatic motor neuron extends to a different what?

peri

around

skeletal, cardiac, smooth

list the 3 types of muscle tissue

bones

what do most skeletal muscles move?

skeletal, cardiac

what type of muscular tissue is striated

alternating light and dark, skeletal

what type of bands are seen in what muscle examined under a microscope

skeletal

what muscle tissue is voluntary

diaphragm

example of subconsciously controlled skeletal muscle

cardiac muscle

muscle found only in the walls of the heart

cardiac, smooth

what muscle is controlled involuntarily?

pacemaker

what is the contraction and relaxation of the heart initiated by, is a node of tissue

smooth muscle

what muscle is located in the walls of hollow internal structures

bv's, airways, many organs

where is smooth muscle found?

producing body movements, stabilizing body positions, moving substances within body, generating heat

what are the functions of muscular tissue

walking, running

examples of the function "producing body movements"

posture

examples of the function "stabilizing body positions"

heart muscle pumping blood, moving substances in digestive tract

examples of the function "moving substances within the body"

contracting muscles produce heat, shivering increases heat production

examples of the function "generating heat"

epi

upon, on, or above

my, myo

muscle

tachy

rapid

brady

slow

excitability, contractility, extensibility, elasticity

list the properties of muscular tissue

excitability

ability to respond to stimuli

contractility

ability to contract forcefully when stimulated

extensibility

ability to stretch without being damaged

elasticity

ability to return to an original length

fascia

dense sheet or broad band of irregular CT that surrounds muscles

epimysium

the outermost layer

perimysium

surrounds numerous bundles of fascicles

endomysium

separates individual muscle fibers from one another

tendon

cord that attaches a muscle to a bone

aponeurosis

broad, flattened tendon (attach the muscle to the structures that they move)

somatic motor neuron

neuron that stimulates skeletal muscle to contract

axon

the what of a somatic motor neuron typically branches many times

blood capillaries

each muscle fiber is in close contact with one or more of what?

number

the what of skeletal muscle fibers is set before you are born, and last a lifetime

hypertrophy

muscle growth

satellite cells

what retains the capacity to regenerate damaged muscle fibers

sarcolemma

the plasma membrane of a muscle cell

transverse tubule

what tunnels into the plasma membrane

sarcoplasm

the cytoplasm of a muscle fiber

synthesis of ATP

function of glycogen in sarcoplasm

ATP production

myoglobin releases oxygen needed for what?

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