The Muscular System

Question 1

Does AEROBIC metabolism require oxygen?

Answer 1

yes

Question 2

Does ANAEROBIC metabolism require oxygen?

Answer 2

No

Question 3

this describes the architecture of a muscle; referring to muscles that have fibers on sides of tendon (e.g. rectus femoris)

Answer 3

Bipennate

Question 4

Concentric contractions happen when the muscle fibers ________ as tension develops

Answer 4

shorten

Question 5

Eccentric contractions happen when the muscle fibers __________ against some resistance

Answer 5

lengthen

Question 6

Def; characteristic of muscle tissue where the fibers recoil and resume length

Answer 6

Elasticity

Question 7

Def; muscle is able to receive and respond to stimuli (also irritability)

Answer 7

Excitability

Question 8

Def; muscle is able to be stretched or extended

Answer 8

Extensibility

Question 9

Fast twitch fibers are _____ in diameter and fatigue _____

Answer 9

large; rapidly

Question 10

Slow twitch fibers are _____ in diameter and ________ to respond to stimuli

Answer 10

smaller; take longer to

Question 11

Def: mediated by the Golgi Tendon organs, this reflex inhibits muscle contraction, causing a stretched/contracted muscle to relax

Answer 11

Inverse stretch reflex

Question 12

Isometric contraction involves A.) movement, or B.) no movement

Answer 12

no movement

Question 13

Isotonic contractions involves ..

Answer 13

movement

Question 14

Def; sensory receptors sensitive to mechanical changes such as touch, pressure, movement, and vibration

Answer 14

Mechanoreceptors

Question 15

Def; a group of muscles of the spine that extend the vertebral column and rotate it to the opposite side

Answer 15

Multifidi

Question 16

Def; the connective tissue envelope around muscle fascicle

Answer 16

Perimysium

Question 17

What are the deep muscles connecting the transverse process of adjacent vertebrae

Answer 17

Intertranseversarri

Question 18

Best describes fascicles that attach obliquely

Answer 18

pennate

Question 19

Which of the 4 rotator cuff muscles rotates MEDIALLY

Answer 19

Subscapularis

Question 20

Which term best describes a sensory receptor within a muscle that monitors changes in the length of the muscles

Answer 20

muscle spindle

Question 21

Which term refers to a jaw muscle that runs vertically

Answer 21

Medial pterygoid

Question 22

What jaw muscle protracts and rotates the jaw to the opposite side?

Answer 22

lateral pterygoid

Question 23

The endoplasmic reticulum of the muscle cell is called …

Answer 23

Sacroplasmic reticulum

Question 24

What is a muscle contraction WITHOUT movement

Answer 24

isometric

Question 25

the normal, sustained muscle contraction required to maintain position and posture

Answer 25

tonic contraction

Question 26

What best describes the point of attachment of tendon to bone?

Answer 26

tenoperiosteal junction

Question 27

What is the synapse between a motor neuron and a skeletal neuron?

Answer 27

neuromuscular junction

Question 28

Anatomy; the deep muscle layer of the flexor compartment that flexes fingers 2-5

Answer 28

flexor digitorum produndus

Question 29

Anatomy: the muscle of the anterior leg that runs to digits 2-5

Answer 29

extensor digitorum longus

Question 30

What is the basic functional unit of muscle?

Answer 30

Sarcomere