MUSCULAR SYSTEM

Question 1

found only in the wall of the heart; unique property of auto-rhythmicity; contractions are involuntary and have and intrinsic rhythm; intercalated discs that help hold adjacent cells together and transmit the force of contraction from cell to cell; has striated, branched uninucleated fibers

Answer 1

cardiac muscles

Question 2

pull a limb toward the median plane

Answer 2

adductor

Question 3

The more moveable bony attachment of the muscle.

Answer 3

insertion

Question 4

occur mainly in blood vessels, and tubular organs in the GI tract, reproductive, urinary, and respiratory systems; under autonomic control - they are involuntary; muscle fibers are unstriated and contain a single nucleus; has spindle-shaped, nonstriated uninucleated fibers; occurs in the walls of internal organs

Answer 4

smooth muscles

Question 5

property of muscle that responds to stimulition from nerve impulses

Answer 5

irritability/electrical excitability

Question 6

the fleshy thick part of the muscle; also called the gaster.

Answer 6

belly

Question 7

directly opposite that of the agonists

Answer 7

antagonists

Question 8

sheath covering the entire muscle

Answer 8

epimysium

Question 9

muscles directly responsible for producing the desired action

Answer 9

agonist

Question 10

refers to the state of muscle contraction

Answer 10

tonus

Question 11

responds to stimuli by contracting lengthwise, or shortening

Answer 11

contractility

Question 12

are dense connective tissue that attaches the muscle to bone.

Answer 12

tendon

Question 13

the less moveable attachment of the muscle

Answer 13

origin

Question 14

decreases the angle of the joint

Answer 14

flexor

Question 15

has striated, tubular, multinucleated fibers; is usually attached to the skeleton; is voluntary

Answer 15

skeletal muscles

Question 16

move the limb away from the median plane

Answer 16

abductor

Question 17

another sheath covering that binds groups of muscle fibers together into bundles called fasciculi o supports the nerves and blood vessels that serve the surrounding fasciculi

Answer 17

perimysium

Question 18

increases the angle of the joint

Answer 18

extensor

Question 19

refers to the body heat production

Answer 19

homeostasis

Question 20

binds individual fibers together and supports
capillaries and nerve endings

Answer 20

endomysium

Question 21

muscle can be stretched up to 30% of its resting length

Answer 21

extensibility

Question 22

a fibrous connective tissue that covers the muscle and
attaches to the skin.

Answer 22

fascia

Question 23

after being stretched, have a tendency to recoil to their original resting length

Answer 23

elasticity

Question 24

Muscles that encircle an opening; either striated or smooth

Answer 24

sphincter

Question 25

muscles that oppose any undesired action of the agonists

Answer 25

synergists