Deck 9: The Muscular System

Question 1

Standing on tiptoes is an example of a:

A)first-class lever system.
B)second-class lever system.
C)third-class lever system.
D)lever system demonstrating mechanical disadvantage.

Answer 1

B

Question 2

What type of muscle performs an anchoring function by holding a bone in place?

A)synergist
B)agonist
C)fixator
D)antagonist

Answer 2

C

Question 3

Which of the following muscles is named for its action?

A)biceps brachii
B)gluteus maximus
C)adductor magnus
D)deltoid

Answer 3

C

Question 4

Which muscle assists with smiling?

A)orbicularis oculi
B)depressor anguli oris
C)zygomaticus major
D)buccinator

Question 5

What joint serves as the fulcrum when triceps brachii moves the forearm?

A)wrist joint
B)shoulder joint
C)metacarpals joint
D)elbow joint

Question 6

Which of the following muscles is named for its shape?

A)levator scapulae
B)vastus medialis
C)pronator quadratus
D)triceps brachii

Question 7

Which of the following muscles is named using a directional term?

A)orbicularis oris
B)adductor longus
C)vastus lateralis
D)gastrocnemius

Question 8

The ability to produce muscle tension allows skeletal muscles to produce body movements known as an:

A)origin.
B)insertion.
C)action.
D)innervation.

Question 9

What lever class has the fulcrum situated between the force and the load?

A)first-class lever
B)second-class lever
C)third-class lever
D)fourth-class lever

Question 10

Identify the corrugator supercilii muscle.

A)A
B)B
C)C
D)D

Question 11

Where does the mentalis muscle insert?

A)skin of the chin
B)skin around the eyelids
C)hyoid bone
D)angle of the mouth

Question 12

In the human body,what is the fulcrum in a lever system?

A)The fulcrum is the angle of the movement.
B)The fulcrum is the effort generated by muscle contractions.
C)The fulcrum is the weight of the body part being moved.
D)The fulcrum is the joint at which movement occurs.

Question 13

Most levers in the human body are:

A)first-class levers.
B)second-class levers.
C)third-class levers.
D)fourth-class levers.

Question 14

Where is the origin of the frontalis muscle?

A)epicranial aponeurosis
B)occipital bone
C)mandible
D)frontal bone

Question 15

Which type of muscle works together with the agonist?

A)antagonist
B)prime mover
C)fixator
D)synergist

Question 16

Muscles with a triangular shape,such as the pectoralis major muscle in the chest,typically have a:

A)parallel fascicle arrangement.
B)convergent fascicle arrangement.
C)unipennate fascicle arrangement.
D)spiral fascicle arrangement.

Question 17

What best describes fusiform skeletal muscle structure?

A)Fusiform muscles may wrap around a bone or have a twisted appearance.
B)Fusiform muscles are broad and taper to a single tendon.
C)Fusiform muscles have fascicles that feather out at one angle from a tendon.
D)Fusiform muscles tend to be thicker in their belly and taper at their ends.

Question 18

Triceps brachii and biceps brachii perform opposing actions and are classified as:

A)antagonists.
B)prime movers.
C)synergists.
D)agonists.

Question 19

What can you tell about a muscle whose name includes the word serratus?

A)Its appearance is serrated or jagged.
B)It is a large muscle.
C)It is a supinator.
D)It is located on the medial side of the body.

Question 20

A lever system works at a mechanical advantage when:

A)the fulcrum is located closer to the applied force.
B)the fulcrum is located farther from the applied force.
C)the fulcrum is equally situated between the load and the force.
D)a small load is to be moved.

Question 21

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

A)diaphragm
B)obliques
C)pterygoid
D)platysma

Question 22

Which of the following is the action of the frontalis muscle?

A)Frontalis lifts the scapula.
B)Frontalis closes the eye.
C)Frontalis elevates,or opens,the upper eyelid.
D)Frontalis elevates the eyebrow.

Question 23

Which of the following is NOT a muscle of ventilation,or breathing?

A)external intercostal muscles
B)external oblique muscle
C)internal intercostal muscles
D)diaphragm

Question 24

Which muscle is the agonist for sitting up?

A)linea alba
B)rectus abdominis
C)external oblique
D)transversus abdominis

Question 25

Which extrinsic eye muscle elevates the eye upward,as in looking up?

A)medial rectus muscle
B)inferior rectus muscle
C)superior rectus muscle
D)inferior oblique muscle

Question 26

Damage to the stylohyoid,mylohyoid,and geniohyoid impairs:

A)smiling.
B)lateral eye movements.
C)chewing.
D)swallowing.

Question 27

Which of the following muscles is NOT associated with the mouth?

A)orbicularis oculi
B)orbicularis oris
C)depressor labii inferioris
D)depressor anguli oris

Question 28

Muscular walls of the thorax and abdomen are composed of:

A)spinal erector muscles.
B)pectoralis muscles.
C)oblique and rectus muscles.
D)gluteal muscles.

Question 29

What is the proper position of the erector spinae muscles situated from medially to laterally relative to the axis of the vertebral column?

A)iliocostalis,longissimus,spinalis
B)cervicis,thoracis,lumborum
C)spinalis,longissimus,iliocostalis
D)capitis,cervicis,thoracis

Question 30

Which muscle works as an antagonist to orbicularis oculi?

A)zygomaticus minor
B)levator palpebrae superioris
C)risorius
D)corrugator supercilii

Question 31

What is NOT a bone to which the sternocleidomastoid muscle is attached?

A)clavicle
B)mandible
C)temporal bone
D)sternum

Question 32

The superior aspect of the pubic bones is the origin of:

A)rectus abdominis.
B)external oblique.
C)rectus femoris.
D)internal oblique.

Question 33

The masseter and temporalis muscles provide much of the force for:

A)frowning.
B)swallowing.
C)smiling.
D)chewing.

Question 34

Damage to the trapezius would cause a person to have difficulty:

A)rotating the head.
B)elevating the rib cage.
C)flexing the head.
D)extending the head.

Question 35

Identify the lateral rectus muscle.

A)A
B)B
C)C
D)D

Question 36

From superficial to deep,the three muscles of the lateral abdominal wall are:

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

Question 37

Which of the following is NOT a muscle involved in the movement of the tongue to manipulate food while chewing and pushing the bolus of food into the throat?

A)stylohyoid
B)genioglossus
C)hyoglossus
D)styloglossus

Question 38

Identify the rectus abdominis muscle.

A)A
B)B
C)C
D)D

Question 39

Which muscle forms the anterior surface of the neck?

A)orbicularis oris
B)buccinator
C)trapezius
D)platysma

Question 40

The levator ani muscle group inserts on the:

A)iliac crest.
B)sacrum.
C)ischial spine.
D)coccyx.

Question 41

What is the action of flexor carpi ulnaris?

A)flex the index finger
B)flex the hand
C)flex the little finger
D)flex the thumb

Question 42

Which muscle elevates the scapula?

A)serratus anterior
B)pectoralis minor
C)levator scapulae
D)rhomboid major

Question 43

Which of the following muscles does NOT adduct the thigh?

A)pectineus
B)adductor magnus
C)rectus femoris
D)gracilis

Question 44

Which group is a synergist to the adductor group?

A)sartorius
B)rectus femoris
C)gracilis
D)vastus medialis

Question 45

Which of the following extends the forearm?

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

Question 46

Identify the brachialis muscle.

A)A
B)B
C)C
D)D

Question 47

Which of the following is NOT a muscle of the rotator cuff?

A)supraspinatus
B)teres major
C)teres minor
D)subscapularis

Question 48

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

A)abduct the arm at the shoulder.
B)adduct the arm at the shoulder.
C)extend the forearm.
D)elevate the scapula.

Question 49

Which muscle is a powerful agonist of adduction,medial rotation,and extension of the arm?

A)latissimus dorsi
B)deltoid
C)pectoralis minor
D)brachialis

Question 50

Which muscle assists with the erection of the penis and clitoris?

A)pubococcygeus
B)superficial transverse perineal
C)levator ani muscle group
D)bulbospongiosus

Question 51

Iliopsoas is formed by the union of two muscles known as:

A)iliacus and psoas major.
B)vastus medialis and vastus lateralis.
C)sartorius and gracilis.
D)pectineus and adductor magnus.

Question 52

Where does infraspinatus insert?

A)coracoid process of the scapula
B)infraspinous fossa of the scapula
C)acromion and spine of the scapula
D)greater tubercle of the humerus

Question 53

Which muscle flexes the hand and abducts the hand?

A)extensor digitorum
B)palmar interossei
C)flexor carpi radialis
D)abductor pollicis longus

Question 54

Which of the following muscles extends the leg at the knee joint?

A)rectus femoris
B)adductor magnus
C)sartorius
D)gracilis

Question 55

Identify the deltoid muscle.

A)A
B)B
C)C
D)D

Question 56

Which muscle provides voluntary control of defecation?

A)deep transverse perineal muscle
B)external urinary sphincter
C)external anal sphincter
D)levator ani

Question 57

The quadriceps femoris group includes all of the following EXCEPT:

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

Question 58

Muscles that move the thumb will be named using the term:

A)superficialis.
B)digiti.
C)carpi.
D)pollicis.

Question 59

The vastus lateralis,vastus medialis,and vastus intermedius muscles insert on the:

A)linea aspera of the femur.
B)patella and tibial tuberosity of the tibia.
C)greater trochanter of the femur.
D)superior margin of the acetabulum.

Question 60

The deltoid is responsible for:

A)medially rotating the humerus.
B)abducting the arm.
C)adducting the arm.
D)extending the humerus.

Question 61

When walking,which muscle flexes your forearm?

A)triceps brachii
B)brachioradialis
C)deltoid
D)teres major

Question 62

From medial to lateral,what are the muscles of the hamstring group?

A)biceps femoris,semitendinosus,semimembranosus
B)semitendinosus,biceps femoris,semimembranosus
C)semitendinosus,semimembranosus,biceps femoris
D)semimembranosus,semitendinosus,biceps femoris

Question 63

The muscle named gluteus maximus tells us two facts: 1)it is located in the buttocks (gluteus),and 2)it is a large muscle (maximus).

Question 64

The union of the muscles of the quadriceps femoris group forms the quadriceps tendon,which continues on to form the patellar ligament.

Question 65

Which muscle abducts the thigh,medially rotates the thigh and pelvis of the moving limb during walking?

A)obturator externus
B)semimembranosus
C)gluteus minimus
D)biceps femoris

Question 66

The soleus is a synergist of the gastrocnemius during plantar flexion.

Question 67

Unipennate muscles have fascicles that wrap around a bone or have a twisted appearance.

Question 68

The prime mover of elbow flexion is biceps brachii.

Question 69

The medial rectus muscle and lateral rectus muscle pull the eye in the same direction.

Question 70

The pharyngeal constrictor muscles propel food from the throat into the esophagus when swallowing.

Question 71

A muscle that dorsiflexes the foot is the:

A)gastrocnemius.
B)tibialis posterior.
C)tibialis anterior.
D)soleus.

Question 72

The external urinary sphincter provides involuntary control of urination.

Question 73

When climbing stairs,which muscles plantarflex your foot?

A)rectus femoris and sartorius
B)gastrocnemius and soleus
C)tibialis anterior and extensor digitorum longus
D)gluteus maximus and hamstrings

Question 74

Each of the following muscles acts to extend the thigh and flex the leg,EXCEPT:

A)semimembranosus.
B)vastus lateralis.
C)biceps femoris.
D)semitendinosus.

Question 75

John experienced a cut that severed the tendon that attaches the insertion of the gastrocnemius muscle.As a result of this injury,what action is difficult for him to perform?

A)dorsiflexion
B)eversion of the foot
C)inversion of the foot
D)plantarflexion

Question 76

When climbing stairs,which muscle or muscle group flexes your leg at the knee?

A)hamstring group
B)tibialis anterior
C)quadriceps femoris group
D)iliopsoas

Question 77

An agonist is a muscle that provides most of the force required for a given movement.

Question 78

A first-class lever has the fulcrum situated farther from the point of the applied force,with the load to be moved in between.

Question 79

The superiorly positioned spinalis and longissimus groups of the erector spinae muscles each have a capitis muscle,cervicis muscle,and thoracis muscle.

Question 80

Which muscle is an antagonist to the gastrocnemius muscle?

A)flexor digitorum longus
B)tibialis anterior
C)soleus
D)plantaris