Muscular System

Question 1

Skeletal Muscle

Answer 1

the specialized tissue that is attached to bones and allows movement.

Question 2

Smooth Muscle

Answer 2

located in various internal structures including the digestive tract, uterus, and blood vessels such as arteries

Question 3

Cardiac Muscle

Answer 3

the muscle that is specific to the heart.

Question 4

Excitability

Answer 4

the ability to respond to a stimulus

Question 5

Elasticity

Answer 5

the ability to stretch to its full range of motion

Question 6

Extensibility

Answer 6

the ability of a muscle to be stretched

Question 7

Contractility

Answer 7

the ability of muscle cells to forcefully shorten

Question 8

Fascicle

Answer 8

Nerve or muscle fibers

Question 9

Epimysium

Answer 9

the sheath of elastic tissue around a muscle

Question 10

Perimysium

Answer 10

the sheath of connective tissue surrounding a bundle of muscle fibers

Question 11

Endomysium

Answer 11

thinner portion of the intramuscular connective tissue

Question 12

Sarcolemma

Answer 12

the fine transparent tubular sheath which envelops the fibers of skeletal muscles.

Question 13

Myofibril

Answer 13

fine contractile fibers, groups of which extend in parallel columns along the length of striated muscle fibers.

Question 14

Sarcoplasm

Answer 14

smooth endoplasmic reticulum that abounds in the myocyte

Question 15

Actin

Answer 15

involved with the motion, binds with myosin

Question 16

Myosin

Answer 16

muscle contraction

Question 17

Subclavius

Answer 17

stabilizes clavicle during movement by depressing it.

Question 18

Serratus Anterior

Answer 18

moves arm from side of the body to front of the body. scapula protracts

Question 19

Trapezius

Answer 19

elevates shoulders, pulls them together, and then tilts head backward. scapula rotates inferiorly, retracts, elevates, and depresses, the spine extends

Question 20

Rhomboid Major

Answer 20

stabilizes scapula during pectoral girdle movement. retracts, rotates inferiorly

Question 21

Pectoralis Major

Answer 21

brings elbows together and then up. flexion, abduction, medial rotation

Question 22

Latissimus Dorsi

Answer 22

Moves the elbow back and spreads them apart. humerus extension abduction and medial rotation. scapula depression

Question 23

Deltoid

Answer 23

lifts arms at the shoulders. abduction, flexion, extension, medial and lateral rotation.

Question 24

Supraspinatus

Answer 24

rotates the elbow outwards. extension adduction

Question 25

Teres Major

Answer 25

assists the infraspinatus in rotating the elbow outwards. extension adduction

Question 26

biceps brachii

Answer 26

allows a bicep curl to happen. flexion supination

Question 27

triceps brachii

Answer 27

extends forearm during a pushup. extension

Question 28

pronator teres

Answer 28

turns hand palm down, pronation

Question 29

supinator

Answer 29

turns hand palm up, supination

Question 30

iliacus

Answer 30

raises the knee at the top of the hip, assists the lateral rotators, flexion, and lateral rotation

Question 31

gluteus maximus

Answer 31

lowers the knee and moves the thigh back, extension

Question 32

gluteus medius

Answer 32

opens the thigh as when doing a split, abduction

Question 33

gluteus minimus

Answer 33

brings the thighs back together, abduction

Question 34

abductor longus

Answer 34

brings the thighs back together, assists with raising the knee, abduction flexion

Question 35

rectus femoris

Answer 35

moves the leg out in front of the body, tibia/ fibula extension, thigh flexion

Question 36

biceps femoris

Answer 36

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