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45 Cards in this Set

  • Front
  • Back
3 types of muscle tissue
Skeletal, smooth, cardiac
Which muscle tissue attachest to bone
Skeletal
Is smooth muscle striated or not striated?
not striated
Is skeletal muscle striated or not striated?
striated
What structure connects muscle to bone
tendon
Is caridac muscle voluntary or involuntary
involuntary
Which muscle tissue is in most viscera, blood vessels, skin
smooth
What is the fibrous sheet of connective tissue that may attacn to bone or the coverings of adjacent muscles?
aponeuroses
Is smooth muscle involuntary or voluntary?
involuntary
Is cardiac muscle striated or not striated?
striated
Which muscle tissue is in the heart wall
cardiac
Layer of connective tissue closely surrounding a skeletal muscle?
epimysium
Is skeletal muscle voluntary or involuntary
voluntary
What makes up a myofibril?
thick and thin filaments
basic rod-like unit of a muscle cell, muscle fiber, contractile fiber
myofibril
Layer of CT that extends inward from the epimysium, separating the muscle tissue into small sections
perimysium
What are the two types of myofilaments>
thick and thin
CT layer that surrounds each fascicle (muscle fiber bundle) in skeletal muscle
endomysium
What is the think filament composed of?
actin
What makes up the bundles of muscle fibers?
myofibrils
What is the thick filament composed of?
myosin
What is a single motor neuron and all of the muscle fibers controled by it called?
motor unit
What are the two twisted portien strands with clobular ends called cross bridges part of?
thick filament
What causes a major source of body heat?
muscles
If that stimulus exceeds the threshold potential, the nerve or muscle fiber will give a complete response; otherwise, there is no response.
All or none response
What is the neurotransmitter for skeletal muscle contraction?
acetylcholine (ACh)
What filament consists of double strands of actin twisted into a helix?
thin filament
Amount of oxygen needed by the liver cells to use the accumulated lactic acid to produce glucose
osygen debt
What are the four types of muscle contraction?
isotonic, eccentric, concentric, isometric
Minimal strength required to cause muscle contraction
threshold stimulus
When a muscle contracts and changes length
isotonic
Continuous state of partial contraction, important for posture
muscle tone
When a muscle contracts and it shortens
concentric
When a muscle contracts but does not change length
isometric
name the two different muscle fiber (twitch)
slow and fast
When a muscle contracts but it is lengthening
eccentric
Are slow twitch fibers (type I) resistant to fatigue?
yes
What color are Fast twitch (type IIb) fibers?
pink to red
Do fast twitch glycolictic fibers (type IIa) have a good blood supply?
no, they are suceptible
Are fast twitch glycolic muscle fibers (type IIa) resistant to fatigue?
no, they are suceptible
Do slow twitch fibers (type I) have a good blood supply?
yes
Which neurotransmitter is used for smooth muscle contraction?
calmodulin
Are Fast twitcdh (type IIb) muscle fibers reistant to fatighe?
yes
What color are slow twitch (type i) fibers
red
What color are fast twitch (type IIa) fibers?
white