Deck 13: Gross Anatomy of Muscular System

Question 1

A muscle located on the anterior surface of the thigh will the knee, whereas a muscle on the posterior surface will the knee.

A)adduct, abduct
B)flex, extend
C)extend, flex
D)abduct, adduct

Answer 1

C

Question 2

Brachioradialis and sternocleidomastoid are named for .

A)their shape
B)the direction of their muscle fibers
C)the location of their origin and insertion
D)their relative size

Answer 2

C

Question 3

A prime mover (agonist).

A)aids the action of the muscle primarily responsible for the movement
B)immobilizes the origin of the prime mover
C)opposes or reverses a movement
D)is primarily responsible for a movement

Answer 3

D

Question 4

The shape of this muscle gives it its name.

A)brachialis
B)trapezius
C)scalenes
D)vastus lateralis

Question 5

A synergist to zygomaticus, this muscle aids in smiling.

A)risorius
B)depressor anguli oris
C)levator labii superioris
D)orbicularis oris

Question 6

Located over the mandibular ramus, this muscle closes the jaw.

A)buccinator
B)risorius
C)masseter
D)epicranius, frontal belly

Question 7

This muscle allows you to stand on tiptoe when the knee is extended, and it flexes the knee when the foot is dorsiflexed.

A)soleus
B)fibularis longus and brevis acting together
C)gastrocnemius
D)fibularis longus

Question 8

Like the deltoid muscle that lies over and abducts the shoulder, these two muscles lie over the hip and are prime movers of hip abduction. Neither muscle extends the hip.

A)gluteus minimus and gluteus maximus
B)gluteus medius and gluteus minimus
C)gluteus maximus and gluteus medius

Question 9

When both muscles of this pair are contracted simultaneously, they flex the neck forward.

A)trapezius
B)sternocleidomastoid
C)semispinalis
D)platysma

Question 10

The quadriceps are the prime movers of knee extension. Which muscle group is an antagonist to knee extension?

A)tibialis anterior
B)hamstrings
C)gluteus maximus
D)soleus

Question 11

This large, fan- shaped muscle of the upper chest is the prime mover of arm flexion.

A)pectoralis major
B)external oblique
C)deltoid
D)serratus anterior

Question 12

Pectoralis major originates on the and inserts in the intertubercular sulcus of the humerus.

A)anterior surface of the scapula
B)the clavicle, acromion, and spine of the scapula
C)clavicle and sternum
D)lateral aspect of ribs 2 through 5

Question 13

The names of these muscles tell you their actions.

A)brachioradialis and sternocleidomastoid
B)external and internal abdominal obliques
C)adductor magnus and extensor digitorum
D)gluteus maximus and gluteus medius

Question 14

This muscle is named for the direction of its fibers.

A)gluteus maximus
B)orbicularis oris
C)external oblique
D)sartorius

Question 15

An agonist for elbow flexion is , whereas the is an antagonist to this movement.

A)triceps brachii, brachialis
B)brachioradialis, deltoid
C)biceps brachii, triceps brachii
D)deltoid, biceps brachii

Question 16

This muscle works as a fixator of the shoulder when you attempt to lift a heavy table with your forearm.

A)serratus anterior
B)external oblique
C)platysma
D)deltoid

Question 17

This name reveals the number of the muscle's origins.

A)pectoralis major
B)adductor longus
C)triceps brachii
D)temporalis

Question 18

This muscle closes the eyes, allowing you to wink or blink.

A)frontal belly of the epicranius
B)orbicularis oris
C)corrugator supercilii
D)orbicularis oculi

Question 19

This superficial muscle covers a large part of the posterior thorax.

A)rectus abdominis
B)pectoralis major
C)rhomboids
D)trapezius

Question 20

This muscle originates on the spinous processes of C7 and T1 - T5, and inserts on the medial border of the scapula.

A)teres minor
B)levator scapulae
C)infraspinatus
D)rhomboids

Question 21

This powerful muscle is the prime mover of arm extension.

A)teres minor
B)rhomboids
C)latissimus dorsi
D)supraspinatus

Question 22

This forearm muscle is a powerful wrist flexor.

A)palmaris longus
B)flexor carpi radialis
C)pronator teres
D)extensor digitorum

Question 23

This deep muscle flexes the trunk on the thigh.

A)splenius group
B)adductor longus
C)erector spinae
D)iliopsoas

Question 24

Commonly referred to as the _, this muscle group on the posterior thigh extends the hip.

A)quadriceps femoris
B)gluteus medius
C)tensor fasciae latae
D)hamstrings

Question 25

This muscle is used in smiling.

A)orbicularis oris
B)levator labii superioris
C)depressor anguli oris
D)zygomaticus

Question 26

This pair of muscles includes the prime mover of inspiration, and its synergist.

A)sternocleidomastoid and external intercostals
B)pectoralis minor and internal intercostals
C)external intercostals and internal intercostals
D)diaphragm and external intercostals

Question 27

A superficial muscle of the leg, this one dorsiflexes the foot.

A)tibialis anterior
B)fibularis longus
C)gastrocnemius
D)soleus

Question 28

Muscles are named based on all the criteria below except .

A)action of the muscle
B)direction of muscle fibers
C)color of the muscle
D)number of origins

Question 29

This muscle compresses the cheek when you whistle.

A)buccinator
B)masseter
C)depressor labii inferioris
D)levator labii superioris