Ch 7

Question 1

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

Answer 1

Atrophy

Question 2

opposite action

Answer 2

Antagonist

Question 3

layers of tissue in muscle, stripes, visible bands

Answer 3

Striations

Question 4

more moveable attachment point of muscle

Answer 4

Intersection

Question 5

muscles between ribs

Answer 5

Intercostals

Question 6

organ muscle

Answer 6

Smooth

Question 7

pivot point of lever system

Answer 7

Fulcrum

Question 8

flattens cheeks eating, whistling

Answer 8

Buccinators

Question 9

a protein that makes the thick filament

Answer 9

Myosin

Question 10

a muscle that decreases the angle at a joint

Answer 10

Flexor

Question 11

a type of neurotransmitter released at NMJ

Answer 11

acetylcholine

Question 12

inhale and exhale, contracts thorax

Answer 12

diaphragm

Question 13

achillies

Answer 13

heel

Question 14

energy, causes myosin head to detach from actin

Answer 14

ATP

Question 15

raises shoulder and pulls it back, turns head

Answer 15

trapezius

Question 16

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

Answer 16

Oxygen debt

Question 17

raises heel, flexes the knee, plantar flexes the ankle

Answer 17

Gastrocnemius

Question 18

glucose, stored in muscle, used for energy

Answer 18

Glycogen

Question 19

produces movement, main muscle

Answer 19

Prime mover

Question 20

tension/ tone is the same, length changes

Answer 20

Isotonic

Question 21

muscle tension changes, length stays the same

Answer 21

Isometric

Question 22

connective tissue surrounding muscles

Answer 22

Epimysium

Question 23

the deepest layer of connective tissue surrounding individual fibers

Answer 23

Endomysium

Question 24

connective tissue surrounding each fascicle

Answer 24

Perimysium

Question 25

The action of a motor neuron and motor unit

Answer 25

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

Question 26

the function of actin and myosin

Answer 26

forms cross bridges, contraction

Question 27

the substance of oxygen debt

Answer 27

lactic acid

Question 28

compound that stores oxygen in muscle cells

Answer 28

myoglobin

Question 29

around mouth and eye

Answer 29

orbicularis

Question 30

decreases angle between bones and joints

Answer 30

flexor

Question 31

raises body part

Answer 31

levator

Question 32

rotates the head away from the muscle

Answer 32

Sternocleidomastoid

Question 33

closes jaw, chewing

Answer 33

masseter

Question 34

closes mouth

Answer 34

orbicularis orbis

Question 35

flexes leg

Answer 35

hamstring

Question 36

brachi/o

Answer 36

arm

Question 37

smooth muscle

Answer 37

organs

Question 38

skeletal muscles

Answer 38

bones

Question 39

cardiac muscles

Answer 39

heart