Muscular system

Question 1

Skeletal Muscle (voluntary

Answer 1

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

Question 2

Cardiac Muscle (involuntary)

Answer 2

Cardiac muscle are only found in the heart

Question 3

Smooth Muscle (involuntary)

Answer 3

Smooth muscles are called so because they do not have striations

Question 4

Exicability

Answer 4

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

Question 5

Elasticity

Answer 5

Having the ability to recoil back to its original length

Question 6

Extensibility

Answer 6

Allows muscles to stretch or extend

Question 7

Contractility

Answer 7

Allow muscles to pull on its attachment and shorten

Question 8

Fasicle

Answer 8

The muscle fibers that are arranged in bundles

Question 9

Epimysium

Answer 9

Outermost layer, surrounds entire muscle

Question 10

Perimisyum

Answer 10

Separates and surrounds fascicles

Question 11

Endomisyum

Answer 11

Surrounds each individual muscle fiber

Question 12

Sarcolema

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

Depression

stablizes clavicle during movement by depressing it

Question 18

Serratus anterior

Answer 18

Scapula protacts , ribs, elevates

Moves arm from side of body to front of body, assists whith anhalation.

Question 19

Trapezius

Answer 19

Scapula: rotates inferiorly, retracts, elevates, and depresses: spine, extends.
Elevates shoulders

Question 20

Rhomboid major

Answer 20

Retracts, rotates inferiorly

Stabilizes scapula during pectoral girdle movement

Question 21

Pectoralls major

Answer 21

Flexion,adduction,medialrotation

Brings elbows together; moves elbow up

Question 22

Latissimus dorsl

Answer 22

Humerus, extension, adduction and medial rotation, scapula depression
Moves elbow back spreads elbows apart

Question 23

Deltoid

Answer 23

Abduction, flexion,extension, medial and lateral rotation.

lifts arms at the shoulder

Question 24

Supraspinatus

Answer 24

Abduction

Rotates the elbow outwards,as during at tennis swing

Question 25

Teres major

Answer 25

Extension,adduction | Assists the infraspinatus in rotating the elbow outwards

Question 26

Biceps brachil

Answer 26

Flexion, supination | Performs a bicep curl, also allows palm of hand to point toward body while flexing

Question 27

Triceps brachil

Answer 27

Extension | Extends forearm,as during a punch

Question 28

Pronator teres

Answer 28

Pronation | Turns hand palm down

Question 29

Supinator

Answer 29

Supination | Tuns hand palm-up

Question 30

iliacus

Answer 30

Thing flexion and lateral rotation;torso: flexion | Raises the knee at the hip,as if performing a knee attack

Question 31

Gluteous maximus

Answer 31

Extension | Lowers the knee and moves the thigh, as when doing a split

Question 32

Gluteous medius

Answer 32

Abduction | Opens the thigh, as when doing a split

Question 33

Gluteous minimus

Answer 33

Abduction | Brings the thigh back together

Question 34

Adductor longus

Answer 34

Adduction;flexion | Brings the thighs back together, it also assists with raisings the knee

Question 35

Rectus Femoris

Answer 35

Tibia/fibula:flexion;thigh:flexion | Moves the lower leg out in front of the body, as when kicking; it also assists in raising the knee

Question 36

Biceps Femoris

Answer 36

Tibia/fibula:flexion;thigh: extension,lateral rotation Moves the back of the lower leg up and back toward the buttocks, as when kneeling: it also moves the thingh down and back and twists the thigh inward.

Question 37

Tibialis anterior

Answer 37

Dorsiflexio; inversion | Raises the sole of the foot off the ground, as when preparing to foot-tap; bends the inside of the foot upwards.

Question 38

Extensor hallucis longus

Answer 38

Foot:dorsiflexion; big toe: extension | Raises the sole of the foot off the ground, as when preparing to foot-tap;extends the big toe

Question 39

Extensor digitorum longus

Answer 39

Foot: dorsiflexion; toes; extension | Raises the sole of the foot off the ground, as when preparing to foot-tap; extends the toes.

Question 40

Grastrocnemius

Answer 40

Foot; plantar flexion; tibia/fibula: flexion | Lowers the sole of the foot to the ground, as when foot-tapping or jumping.

Question 41

Soleus

Answer 41

Plantar flexion/foot | Lowers the sole of the foot to the ground, as when foot-tapping or jumping; it also maintains posture while walking.

Question 42

Tibialis posterior

Answer 42

Plantar flexion/foot | Lowers the sole of the foot to the ground, as when foot-tapping or jumping

Question 43

Flexor digitorum longus

Answer 43

Foot: plantar flexion and inversion; toes:flexion Lowers the sole of the foot to the ground, as when foot-tapping or jumping, it also bends the inside of the foot upward and flexes the toes.

Question 44

Flexor hallicis longus

Answer 44

Big toe:flexion; foot: plantar flexion | Flexes the big toe.