Deck 10: The Muscular System

Question 1

Jill suffers a severe cut that severs the tendon that attaches the insertion of the flexor carpi ulnaris. As a result of this injury, what action is difficult for her to perform?

A) flex her elbow
B) flex her shoulder
C) flex and adduct her hand
D) flex her forearm
E) flex her ulna

Answer 1

C

Question 2

Muscles that are long and round in cross section are termed

A) teres.
B) brevis.
C) maximus.
D) longissimus.
E) longus.

Answer 2

A

Question 3

The muscle that pronates the forearm and opposes biceps brachii is the

A) pronator quadratus.
B) latissimus dorsi.
C) brachialis.
D) triceps brachii medial head.
E) anconeus.

Answer 3

A

Question 4

The muscle that inserts on the iliotibial tract and gluteal tuberosity of the femur is the

A) piriformis.
B) gluteus maximus.
C) gluteus minimus.
D) tensor fasciae latae.
E) gluteus medius.

Question 5

The leverage of the biceps brachii applies its force six times closer to the fulcrum elbow joint) than the resistance. This means it will need to exert kg of force to support a load of 6 kg.

A) 7
B) 6
C) 36
D) 1
E) can't say from this information

Question 6

All of the following are innervated by the facial nerve N VII), except for the muscle.

A) risorius
B) orbicularis oculi
C) levator palpebrae
D) auricularis
E) mentalis

Question 7

Which of the following is the insertion of the triceps brachialis?

A) infraglenoid tuberosity of the scapula
B) olecranon process of the ulna
C) medial epicondyle of the humerus
D) lateral condyle of the humerus
E) base of the second metacarpal

Question 8

A muscle that assists the muscle that is primarily responsible for a given action is an)

A) originator.
B) antagonist.
C) agonist.
D) levator.
E) synergist.

Question 9

Deep muscles are called

A) externus.
B) superficialis.
C) profundus.
D) extrinsic.
E) intrinsic.

Question 10

The spinous processes of the upper thoracic vertebrae are the origin of the

A) levator scapulae.
B) rhomboid major.
C) trapezius.
D) supraspinatus.
E) both B and C

Question 11

The powerful abductor muscle of the upper arm is the

A) subscapularis.
B) coracobrachialis.
C) deltoid.
D) teres major.
E) supraspinatus.

Question 12

In a 6.45- cm2 1- inch2) cross section, a parallel muscle can exert approximately of isometric tension.

A) 23 kg 50 lb)
B) 6.45 kg 14.2 lb)
C) 50 kg 110 lb)
D) 10 kg 22 lb)
E) 18 kg 40 lb)

Question 13

The muscle is the strongest jaw muscle.

A) digastric
B) masseter
C) medial pterygoid
D) lateral pterygoid
E) pterygoid

Question 14

Identify the muscle labeled "6."

A) pronator teres
B) deltoid
C) triceps brachii
D) brachialis
E) biceps brachii

Question 15

When opposing the thumb, which muscle is active?

A) flexor digitorum profundus.
B) abductor pollicis longus.
C) flexor pollicis longus.
D) pronator teres.
E) flexor carpi radialis.

Question 16

The freedom of movement is relatively greater in the

A) pectoral girdle.
B) pelvic girdle.

Question 17

The insertion of the flexor hallucis longus is

A) above the femoral condyles.
B) the lateral condyle of the tibia and anterior surface of the fibula.
C) the posterior surface of the medial condyle of the tibia.
D) the inferior surface of the distal phalanx of the great toe.
E) the superior surface of the distal phalanx of the great toe.

Question 18

Medial rotation of the eyeball is performed by the muscle.

A) lateral rectus
B) inferior rectus
C) medial rectus
D) superior rectus
E) inferior oblique

Question 19

Which of the following does not originate or insert on the hyoid bone?

A) geniohyoid
B) sternohyoid
C) omohyoid
D) sternothyroid
E) digastric

Question 20

Tom is having difficulty plantar flexing and everting his foot. Which muscle is most likely involved in this problem?

A) soleus
B) tibialis anterior
C) flexor digitorum longus
D) fibularis
E) gastrocnemius

Question 21

Which of the following describes the action of the digastric muscle?

A) elevates the larynx
B) depresses and retracts the tongue
C) depresses the larynx
D) elevates the mandible
E) elevates the larynx and depresses the mandible

Question 22

An antagonist to the gastrocnemius is the

A) soleus.
B) extensor digitorum longus.
C) tibialis anterior.
D) peroneus.
E) tibialis posterior.

Question 23

Figure 10- 1 Major Anterior Skeletal Muscles
Use Figure 10- 1 to answer the following questions:
Identify the muscle labeled "1."

A) sternocleidomastoid
B) deltoid
C) temporalis
D) pectoralis major
E) trapezius

Question 24

Figure 10- 2 Major Posterior Skeletal Muscles
Use Figure 10- 2 to answer the following questions:
Identify the muscle labeled "2."

A) anconeus
B) teres major
C) trapezius
D) sternocleidomastoid
E) deltoid

Question 25

The muscles of the head and neck function in

A) feeding.
B) controlling the eyes.
C) nonverbal communication.
D) all of the above
E) B and C only

Question 26

Each of the following muscles acts to flex the leg, except the

A) sartorius.
B) semimembranosus.
C) gracilis.
D) semitendinosus.
E) vastus lateralis.

Question 27

Which of the following is a spinal flexor?

A) quadratus lumborum
B) longus colli
C) longus capitis
D) all of the above
E) B and C only

Question 28

The covers the anterior surface of the neck.

A) orbicularis oris
B) occipitofrontalis
C) epicranium
D) platysma
E) buccinator

Question 29

Which of the following describes the action of the serratus anterior?

A) adducts the arm
B) medial rotation of the humerus
C) protracts the shoulder, abducts and medially rotates the scapula
D) adducts and flexes the humerus
E) lateral rotation of the humerus

Question 30

Which of these is true about the muscle named levator palpebrae superioris?

A) originates at the back of the orbit
B) elevates the eyebrow
C) raises the upper eyelid
D) lifts the scapula
E) both B and C

Question 31

The infraspinatus has its insertion on the

A) lesser tubercle and intertubercular groove of the humerus.
B) clavicle and scapula.
C) vertebral border near the spine.
D) greater tubercle of the humerus.
E) tuberosity of the radius.

Question 32

Muscles that laterally rotate the thigh include all of the following, except the

A) tensor fasciae latae.
B) obturator internus.
C) piriformis.
D) obturator externus.
E) gluteus maximus.

Question 33

Figure 10- 1 Major Anterior Skeletal Muscles
Use Figure 10- 1 to answer the following questions:
The quadriceps group includes all of the following, except the

A) vastus lateralis.
B) vastus medialis.
C) vastus intermedius.
D) rectus femoris.
E) biceps femoris.

Question 34

Muscles located close to the midline of the body may be called

A) lateralis.
B) rectus.
C) proximal.
D) medialis.
E) distalis.

Question 35

Which of the following is a member of the hamstring group?

A) semitendinosus
B) semimembranosus
C) biceps femoris
D) all of the above
E) B and C only

Question 36

The levator ani inserts on the

A) coccyx.
B) central tendon of the perineum.
C) sacrum.
D) iliac crest.
E) ischial spine.

Question 37

Muscles located entirely within an organ are called

A) externus.
B) intrinsic.
C) internus.
D) extrinsic.
E) profundus.

Question 38

The bones, which serve as levers in the body, change

A) the effective strength of a force.
B) the distance and speed of movement produced by a force.
C) the direction of movement.
D) A, B, and C
E) none of the above

Question 39

Figure 10- 2 Major Posterior Skeletal Muscles
Use Figure 10- 2 to answer the following questions:
Which of the following does not originate on the humerus?

A) anconeus
B) brachialis
C) biceps brachii
D) brachioradialis
E) both B and C

Question 40

Which of the following muscles has its origin on the hyoid and inserts on the tongue?

A) thyrohyoid
B) geniohyoid
C) styloglossus
D) lateral pterygoideus
E) sternohyoid

Question 41

Figure 10- 1 Major Anterior Skeletal Muscles
Use Figure 10- 1 to answer the following questions:
The muscle that inserts on the acromion and scapular spine is the

A) trapezius.
B) sternocleidomastoid.
C) levator scapulae.
D) pectoralis minor.
E) serratus anterior.

Question 42

Figure 10- 1 Major Anterior Skeletal Muscles
Use Figure 10- 1 to answer the following questions:
Identify the muscle labeled "11."

A) serratus anterior
B) rectus anterior
C) vastus lateralis
D) soleus
E) tibialis anterior

Question 43

A muscle that inserts on the body of the mandible is probably involved in

A) kissing.
B) spitting.
C) blowing.
D) frowning.
E) chewing.

Question 44

A muscle that flexes the spinal column is the

A) longissimus.
B) iliocostalis.
C) rectus abdominis.
D) sacrospinalis.
E) spinalis.

Question 45

A muscle that originates along the linea aspera of the femur is

A) vastus lateralis.
B) vastus medialis.
C) vastus intermedius.
D) adductor brevis.
E) A, B, and C

Question 46

Which of the following originates on the medial epicondyle of the humerus?

A) pronator teres.
B) flexor carpi radialis
C) flexor carpi ulnaris
D) palmaris longus
E) all of the above

Question 47

A muscle that adducts the humerus is the

A) coracobrachialis.
B) deltoid.
C) trapezius.
D) latissimus dorsi.
E) both A and D

Question 48

A lever consists of

A) a tendon and a muscle.
B) a rigid structure.
C) a pivot point or fulcrum.
D) A, B, and C
E) B and C only

Question 49

Muscles visible at the body surface are often called

A) internus.
B) superficialis.
C) intrinsic.
D) profundus.
E) extrinsic.

Question 50

Figure 10- 1 Major Anterior Skeletal Muscles
Use Figure 10- 1 to answer the following questions:
The "kissing muscle" that purses the lips is the

A) orbicularis oris.
B) zygomaticus.
C) procerus.
D) levator labii.
E) buccinator.

Question 51

Figure 10- 2 Major Posterior Skeletal Muscles
Use Figure 10- 2 to answer the following questions:
Identify the muscle labeled "12."

A) sartorius
B) tibialis posterior
C) peroneus longus
D) gastrocnemius
E) soleus

Question 52

The extends the neck.

A) spinalis thoracis
B) splenius
C) spinalis cervicis
D) splenius capitis
E) splenius cervicis

Question 53

A muscle whose name ends in the suffix - glossus would be found within or attached to the

A) jaw.
B) lips.
C) tongue.
D) cheek.
E) chin.

Question 54

Figure 10- 1 Major Anterior Skeletal Muscles
Use Figure 10- 1 to answer the following questions:
Muscles that insert on the olecranon process of the ulna can act to

A) extend the forearm.
B) abduct the forearm.
C) extend the carpals.
D) adduct the forearm.
E) flex the forearm.

Question 55

Which of the following does not move the shoulder girdle?

A) serratus anterior
B) deltoid
C) pectoralis major
D) trapezius
E) rhomboid

Question 56

Which of these muscles is a member of the quadriceps group?

A) vastus medialis
B) vastus lateralis
C) vastus intermedius
D) rectus femoris
E) all of the above

Question 57

The muscle that inserts on the superior surface of the pubis around the symphysis is the

A) rectus abdominis.
B) internal oblique.
C) transversus abdominis.
D) scalene.
E) external oblique.

Question 58

Figure 10- 1 Major Anterior Skeletal Muscles
Use Figure 10- 1 to answer the following questions:
Identify the muscle labeled "27."

A) biceps femoris
B) rectus femoris
C) soleus
D) gastrocnemius
E) gracilis

Question 59

Each of the following muscles is involved in the process of chewing or manipulating food in the mouth, except the

A) masseter.
B) temporalis.
C) genioglossus.
D) omohyoid.
E) pterygoid.

Question 60

Figure 10- 2 Major Posterior Skeletal Muscles
Use Figure 10- 2 to answer the following questions:
The anterior muscle that inserts widely on the periosteum of the mandible is the

A) platysma.
B) lateral pterygoideus.
C) temporalis.
D) masseter.
E) medial pterygoideus.

Question 61

Which eye muscle sends its tendon of origin through a pulley or trochlea before inserting on the globe?

A) superior oblique
B) inferior rectus
C) superior rectus
D) lateral rectus
E) inferior oblique

Question 62

Which of the following is the origin of the bulbospongiosus?

A) collagen sheath at the base of the clitoris
B) ischial spine
C) coccyx
D) inferior ischial ramus
E) linea alba and pubis

Question 63

The most common lever systems in the body are those that have the applied force between the fulcrum and the load. These are called levers.

A) third- class
B) second- class
C) first- class
D) fifth- class
E) fourth- class

Question 64

Figure 10- 2 Major Posterior Skeletal Muscles
Use Figure 10- 2 to answer the following questions:
Identify the muscle labeled "6."

A) adductor magnus
B) tensor fasciae latae
C) rhomboid major
D) latissimus dorsi
E) trapezius

Question 65

Figure 10- 2 Major Posterior Skeletal Muscles
Use Figure 10- 2 to answer the following questions:
Muscles including the term capitis would be found within or attached to the

A) thorax.
B) groin.
C) neck.
D) abdomen.
E) head.

Question 66

The names of the muscles can indicate all of the following, except

A) collagen content of the muscle.
B) the location of the muscle.
C) the angle of the muscle relative to the long axis of the body.
D) structural characteristics of the muscle.
E) the action of the muscle.

Question 67

Which of the following describes the action of the corrugator supercilii?

A) elevates the mandible
B) depresses the lips
C) moves the external ear
D) purses the lips
E) wrinkles the brow

Question 68

The procerus inserts on the

A) angle of the mouth.
B) sides of the tongue.
C) lateral nasal cartilages.
D) skin around the eyelids.
E) orbicularis oris.

Question 69

Which of the following muscles is found within the pelvic floor?

A) perineal group
B) coccygeus
C) bulbospongiosus
D) ischiocavernosus
E) all of the above

Question 70

Skeletal muscles in which the fascicles form a common angle with the tendon are muscles.

A) divergent
B) pennate
C) parallel
D) convergent
E) circular

Question 71

Damage to which of the following muscles would interfere most with the ability to breathe?

A) intercostals
B) digastric
C) platysma
D) pterygoid
E) rectus abdominis

Question 72

Superficial muscles that position or stabilize an organ are called

A) externus.
B) intrinsic.
C) extrinsic.
D) profundus.
E) internus.

Question 73

Damage to the pectoralis major would interfere with a person's ability to

A) abduct the humerus.
B) rotate the elbow.
C) adduct the humerus.
D) elevate the scapula.
E) extend the forearm.

Question 74

Muscles with fibers that run at an angle to the long axis of the body are called

A) rectus.
B) oblique.
C) transversus.
D) lateralis.
E) medialis.

Question 75

Which of the following is the insertion of the pectoralis major?

A) the occipital bone of the skull
B) the clavicle and scapula
C) the vertebral border near the spine
D) the mastoid region of the skull
E) the greater tubercle of the humerus

Question 76

A skeletal muscle fiber can contract until it has shortened by about

A) 50 percent.
B) 25 percent.
C) 20 percent.
D) 30 percent.
E) 40 percent.

Question 77

Which of these muscles produces lateral rotation at the hip?

A) gluteus maximus
B) obturator internus
C) piriformis
D) obturator externus
E) all of the above

Question 78

Figure 10- 2 Major Posterior Skeletal Muscles
Use Figure 10- 2 to answer the following questions:
muscle fibers pull in different directions, permitting different actions depending on stimulation.

A) Parallel
B) Pennate
C) Convergent
D) Circular
E) Straight

Question 79

Figure 10- 2 Major Posterior Skeletal Muscles
Use Figure 10- 2 to answer the following questions:
Identify the muscle labeled "7."

A) pronator teres
B) anconeus
C) brachioradialis
D) extensor carpi ulnaris
E) extensor digitorum

Question 80

Muscles that guard entrances and exits of internal passageways are muscles.

A) convergent
B) bipennate
C) pennate
D) circular
E) parallel