Muscular system

Question 1

Prefixes myo and mys refer to

Answer 1

Muscle

Question 2

Prefix sarco refers to

Answer 2

Flesh

Question 3

Attached to bones, facial muscle

Answer 3

Skeletal muscle

Question 4

Wall of heart

Answer 4

Cardiac muscle

Question 5

Hallow visceral organ and its single nucleus

Answer 5

Smooth muscle

Question 6

Muscle cell

Answer 6

Muscle fiber

Question 7

have visible banding

Answer 7

Striated

Question 8

Enclose single muscle fiber

Answer 8

Endomysium

Question 9

wraps around a fascicle
(bundle) of muscle fibers

Answer 9

Perimysium

Question 10

Cover the entire skeletal muscle

Answer 10

Epimysium

Question 11

Cord like structure

Answer 11

Tendons

Question 12

Sheet like structure

Answer 12

Aponeurosis

Question 13

Specialized plasma membrane

Answer 13

Sarcolemma

Question 14

Long organelles inside muscle cell

Answer 14

Myofibrils

Question 15

specialized
smooth endoplasmic reticulum

Answer 15

Sarcoplasmic reticulum

Question 16

light band
 Contains only thin filaments

Answer 16

I band

Question 17

dark band
 Contains the entire length of the thick filaments

Answer 17

A band

Question 18

contractile unit of a
muscle fiber

Answer 18

Sarcomere

Question 19

Thick filaments

Answer 19

myosin filaments

Question 20

Thin filaments

Answer 20

actin filaments

Question 21

Composed of the protein myosin
 Has ATPase enzymes
 Myosin filaments have heads (extensions, or cross
bridges)
 Myosin and actin overlap somewhat

Answer 21

myosin filaments

Question 22

Composed of the protein actin
 Anchored to the Z disc

Answer 22

actin filaments

Question 23

Stores and releases calcium
 Surrounds the myofibril

Answer 23

Sarcoplasmic reticulum (SR)

Question 24

ability to receive and respond to a
stimulus

Answer 24

Excitability

Question 25

ability to shorten when an adequate stimulus is received

Answer 25

Contractility

Question 26

ability of muscle cells to be stretched

Answer 26

Extensibility

Question 27

ability to recoil and resume resting length after stretching

Answer 27

Elasticity

Question 28

one motor neuron and all the skeletal muscle cells stimulated by that neuron

Answer 28

Motor unit

Question 29

Association site of axon terminal of the motor neuron and muscle

Answer 29

Neuromuscular junction

Question 30

Gap between nerve and muscle Nerve and muscle do not make contact Area between nerve and muscle is filled with interstitial fluid

Answer 30

Synaptic cleft

Question 31

chemical released by nerve upon arrival of nerve impulse

Answer 31

Neurotransmitter

Question 32

The neurotransmitter for skeletal muscle is

Answer 32

acetylcholine (AcH)

Question 33

Sarcolemma becomes permeable to

Answer 33

sodium (Na+)