Muscular System

Question 1

type of muscle tissue

Answer 1

Skeletal muscle fibers are multinucleated structures that compose the skeletal muscle.

Question 2

type of muscle tissue

Answer 2

Cardiac muscle are only found in the heart

Question 3

type of muscle tissue

Answer 3

Smooth muscles are called so because they do not have striations. These can be found in hollow organs such as bladder, stomach, uterus, intestines, and passageways of circulatory system.

Question 4

properties of muscle and definition

Answer 4

Exicability

Able to send electrical waves (action potential) along the entire length

Question 5

properties of muscle and definition

Answer 5

Elasticity

Having the ability to recoil back to its original length

Question 6

properties of muscle and definition

Answer 6

Extensibility

Allows muscles to stretch or extend

Question 7

properties of muscle and definition

Answer 7

Contractility

Allows muscles to pull on its attachment and shorten

Question 8

Fascicle

Answer 8

The muscle fibers that are arranged in bundles

Question 9

Epimysium

Answer 9

Outermost layer, surrounds entire muscle

Question 10

Perimysium

Answer 10

Separates and surrounds fascicles

Question 11

Endomysium

Answer 11

Surrounds each individual muscle fiber

Question 12

Sarcolemma

Answer 12

Muscle fiber membrane

Question 13

Myofibril

Answer 13

Individual parallel muscle fibers (made up of actin and myosin)

Question 14

Sarcoplasm

Answer 14

Inner material surrounding the myofibril (equivalent to the cell’s cytoplasm)

Question 15

actin

Answer 15

Thin filaments

Question 16

myosin

Answer 16

Thick filaments

Question 17

subclavius

Answer 17

depressing, stabilizes clavicle during movement

Question 18

serratus anterior

Answer 18

scapula:protracts ribs:elevates, moves arm from side of the body to front of the body

Question 19

rhomboid major

Answer 19

retracts rotates inferiorly

Question 20

pectoralis major

Answer 20

flexion/adduction/medial rotation, brings elbows together and moves them up

Question 21

latissimus dorsi

Answer 21

Humerous: extension, adduction, medial rotation Scapula: depression, moves elbows back

Question 22

deltoid

Answer 22

adduction/flexion/extention/medial and lateral rotation, lifts arms at the shoulder

Question 23

supraspinatus

Answer 23

abduction, rotates elbows outward

Question 24

teres major

Answer 24

extention/adduction, assists infraspinatus in rotating elbows outward

Question 25

biceps brachii

Answer 25

flexion/supination, performs bicep curl

Question 26

triceps brachii

Answer 26

extension, extends forearm

Question 27

pronator teres

Answer 27

pronation, turns palm down

Question 28

supinator

Answer 28

supination, turns palm up

Question 29

trapezius

Answer 29

scapula: rotates inferioirly/retracts/elevates/depresses spine: extends, elevates shoulders

Question 30

iliacus

Answer 30

thigh: flexion/lateral rotation torso:flexion, raises knee at the hip

Question 31

gluteous maximus

Answer 31

extension, lowers knee and moves thigh back

Question 32

gluteous medius

Answer 32

abduction, opens the thigh

Question 33

gluteous minimus

Answer 33

abduction, brings thighs back together

Question 34

adductor longus

Answer 34

adduction/flexion, brings thighs back together