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Anatomy CVM 6100 > Myology > Flashcards

Myology Flashcards

1
Q

What are the 3 categories of muscle tissue?

A

smooth

cardiac

skeletal

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2
Q

What is smooth muscle?

A

not striated

viscera (guts)

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3
Q

What is cardiac muscle?

A

striated

musculature of the heart

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4
Q

What is skeletal muscle?

A

striated muscle attached to bone

voluntary control

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5
Q

What are the features of skeletal muscle?

A

striated

elongate multinucleated cells (muscle fibers)

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6
Q

What is included in a motor unit?

A

the neuron

plus the muscle fiber

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7
Q

What happens when you active multiple motor units?

A

you get a stronger contraction

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8
Q

What are the different levels of fascia associated with muscle?

A

epimysium

perimysium

endomysium

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9
Q

What is epimysium?

A

fascia that surround the entire muscle

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10
Q

What is perimysium?

A

loose connective fascia that surround muscle bundles

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11
Q

What is endomysium?

A

small amounts of loose connective tissue surrounding individual muscle fibers within fiber bundles

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12
Q

Starting from the inside out name the layers of muscle

A

muscle fiber —> endomysium—>bundle of fibers—>perimysium—>bundle of bundles (muscle)—>epimysium

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13
Q

What are 2 ways to protect a tendon?

A

bursa

tendon synovial sheath

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14
Q

What is a bursa

A

a fluid filled synovial pocket between tendon and bone

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15
Q

What is a tendon synovial sheath?

A

a fluid filled wrap around a tendon

i.e carotid sheath

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16
Q

What is a muscle agonist?

A

the prime mover executing the particular joint movement

17
Q

What is an antagonist muscle?

A

opposes the action of the agonist

18
Q

What is a synergist muscle?

A

assists the agonist - stabilizes joints

19
Q

What are the 2 types of fasicle and fiber arrangement?

A

parallel

pennate

20
Q

Describe parallel muscle arrangement

A

strap or spindle arrangement

fast movements

21
Q

describe pennate muscle arrangement

A

fibers arranged at an angle to the direction the fiber moves

for strength!!!!

22
Q

What are the 3 types of pennate arrangement?

A

unipennate

bipennate

multipennate

23
Q

What is an example of a unipennate muscle arrangement?

A

ulnar and radial heads of the deep digital flexor

24
Q

What is an example of bipennate muscle arrangement?

A

infraspinatus muscle

25
Q

What is an example of multipennate muscle arrangement?

A

humeral head of the deep digital flexor

strongest of all muscle arrangements

26
Q

What is the strongest muscle arrangement?

A

multipennate

27
Q
A

Anatomy CVM 6100 (9 decks)

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