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Structure and Function > Ch 7 > Flashcards

Ch 7 Flashcards

1
Q

degeneration of a muscle, decrease in cells, associated with age

A

Atrophy

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2
Q

opposite action

A

Antagonist

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3
Q

layers of tissue in muscle, stripes, visible bands

A

Striations

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4
Q

more moveable attachment point of muscle

A

Intersection

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5
Q

muscles between ribs

A

Intercostals

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6
Q

organ muscle

A

Smooth

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7
Q

pivot point of lever system

A

Fulcrum

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8
Q

flattens cheeks eating, whistling

A

Buccinators

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9
Q

a protein that makes the thick filament

A

Myosin

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10
Q

a muscle that decreases the angle at a joint

A

Flexor

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11
Q

a type of neurotransmitter released at NMJ

A

acetylcholine

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12
Q

inhale and exhale, contracts thorax

A

diaphragm

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13
Q

achillies

A

heel

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14
Q

energy, causes myosin head to detach from actin

A

ATP

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15
Q

raises shoulder and pulls it back, turns head

A

trapezius

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16
Q

oxygen shortage by exercises (muscles act aerobically, they are stable)

A

Oxygen debt

17
Q

raises heel, flexes the knee, plantar flexes the ankle

A

Gastrocnemius

18
Q

glucose, stored in muscle, used for energy

A

Glycogen

19
Q

produces movement, main muscle

A

Prime mover

20
Q

tension/ tone is the same, length changes

A

Isotonic

21
Q

muscle tension changes, length stays the same

A

Isometric

22
Q

connective tissue surrounding muscles

A

Epimysium

23
Q

the deepest layer of connective tissue surrounding individual fibers

A

Endomysium

24
Q

connective tissue surrounding each fascicle

A

Perimysium

25
Q

The action of a motor neuron and motor unit

A

a single neuron and its muscle fibers make up the motor unit

26
Q

the function of actin and myosin

A

forms cross bridges, contraction

27
Q

the substance of oxygen debt

A

lactic acid

28
Q

compound that stores oxygen in muscle cells

A

myoglobin

29
Q

around mouth and eye

A

orbicularis

30
Q

decreases angle between bones and joints

A

flexor

31
Q

raises body part

A

levator

32
Q

rotates the head away from the muscle

A

Sternocleidomastoid

33
Q

closes jaw, chewing

A

masseter

34
Q

closes mouth

A

orbicularis orbis

35
Q

flexes leg

A

hamstring

36
Q

brachi/o

A

arm

37
Q

smooth muscle

A

organs

38
Q

skeletal muscles

A

bones

39
Q

cardiac muscles

A

heart

Structure and Function (22 decks)

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