Muscular System

Question 1

Skeletal Muscle (voluntary)

Answer 1

Fibers are multinucleated structures that compose the skeletal muscle

Question 2

Cardiac Muscle (involuntary)

Answer 2

Are only found in the heart

Question 3

Smooth Muscle (involuntary)

Answer 3

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

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

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

Small triangular muscle, placed between the clavicle and the first rib, depression

Question 18

Serratus anterior

Answer 18

Muscle that originates on the surface of the 1st to 8th ribs at the side of the chest, protract

Question 19

Trapezius

Answer 19

Either of a pair of large triangular muscles extending over the back of the neck, rotates inferiorly

Question 20

Rhomboid major

Answer 20

Skeletal muscle on the back that connects the scapula with the vertebrae of the spinal column, rotates inferiorly

Question 21

Pectoralis major

Answer 21

Thick, fan-shaped or triangular convergent muscle, situated at the chest of the human body, flexion

Question 22

Latissimus dorsi

Answer 22

Large, flat muscle covering the width of the middle and lower back, medial rotation

Question 23

Deltoid

Answer 23

Large triangular shaped muscle which lies over the glenohumeral joint, medial and lateral rotation

Question 24

Supraspinatus

Answer 24

relatively small muscle of the upper back that runs from the supraspinous fossa superior portion of the scapula to the greater tubercle of the humerus, abduction

Question 25

Teres major

Answer 25

Small muscle that runs along the lateral border of the scapula, extension

Question 26

Biceps brachii

Answer 26

Two-headed muscle of the arm, flexion

Question 27

Triceps brachii

Answer 27

Muscle that runs down the back of the humerus, extension

Question 28

Pronator teres

Answer 28

Muscle (located mainly in the forearm), pronation

Question 29

Supinator

Answer 29

Muscle whose contraction produces or assists in the supination of a limb or part of a limb, supination

Question 30

Iliacus

Answer 30

Triangular muscle which passes from the pelvis through the groin on either side and, together with the psoas, flexes the hip, flexion and lateral rotation

Question 31

Gluteus maximus

Answer 31

Largest and heaviest muscle in the body, extension

Question 32

Gluteus medius

Answer 32

Large fan-shaped muscle located in the posterior hip, abduction

Question 33

Gluteus minimus

Answer 33

The smallest muscle of the glutei, abduction

Question 34

Adductor longus

Answer 34

Skeletal muscle located in the thigh, flexion

Question 35

Rectus femoris

Answer 35

Part of the quadriceps group, extension

Question 36

Biceps femoris

Answer 36

Muscle in the back of the thigh which helps to flex the leg, flexion

Question 37

Tibialis anterior

Answer 37

Along the upper two-thirds of the lateral, inversion

Question 38

Extensor hallucis longus

Answer 38

Thin muscle, situated between the Tibialis anterior and the Extensor digitorum longus, dorsiflexion

Question 39

Extensor digitorum longus

Answer 39

Feather-like muscle of the anterior (extensor) compartment of leg, dorsiflexion

Question 40

Gastrocnemius

Answer 40

Chief muscle of the calf of the leg, which flexes the knee and foot. It runs to the Achilles tendon from two heads attached to the femur, dorsiflexion

Question 41

Soleus

Answer 41

powerful lower limb muscle, plantar flexion

Question 42

Tibialis posterior

Answer 42

Located deep in the posterior compartment of the lower leg and situated between the Flexor Digitorum Longus and the Flexor Hallucis Longus, plantar flexion

Question 43

Flexor digitorum longus

Answer 43

Thin muscle that belongs to the deep posterior muscles of the leg. It runs from the posterior surface of the tibia, plantar flexion

Question 44

Flexor hallucis longus

Answer 44

Powerful muscle located on the posterior aspect of the fibular below the deep fascia of the calf, flexion