Human Anatomy (McKinley): Chapter 12 - Appendicular Muscles - Multiple Choice

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quadratus plantae

Which muscle pulls obliquely on another muscle's tendons to prevent the toes from flexing at an angle?

levator scapulae

Which muscles allow you to shrug your shoulders?

abduct

On the foot as well as the hand, the dorsal interossei ____________ the digits.

sartorius

The name of the ____________ indirectly refers to the muscle's role in crossing one's legs.

sartorius and gracilis

The only muscles that flex both the thigh and the leg are the

rectus femoris

The only quadriceps muscle that moves both the coxal and knee joints is the

swollen muscles that compress blood vessels in a limb compartment

What causes compartment syndrome?

opposition swings the thumb across the palm toward the tips of digits 2-5, abduction increases the distance between the thumb and the index finger, adduction involves an angular movement at the first carpometacarpal joint

All of the following accurately describe movements of the thumb

supraspinatus, teres minor, subscapularis

All of the following are rotator cuff muscles

extending the thigh and flexing the leg

All of the hamstring muscles work together in which actions?

gastrocnemius; soleus

Because the two heads of the ____________ share a common tendon of insertion with the ____________, these muscles are collectively called the triceps surae.

medially rotate

Both the gluteus minimus and the gluteus medius abduct and ____________ the thigh at the coxal joint.

flexor retinaculum

Carpal tunnel syndrome results from compression of either the median nerve or the tendons in the narrow space between the carpal bones and the

originate mostly on the medial epicondyle of the humerus

Except for the deepest layer, the anterior muscles of the antebrachial region

four

How many layers of intrinsic muscles are on the plantar surface of the foot?

deltoid

In terms of adduction and abduction of the arm, which muscle opposes the pectoralis major and latissimus dorsi?

anteriorly; posteriorly

In the lower limb, hip flexors insert ____________ on the thigh, while knee flexors insert ____________ on the leg.

medial epicondyle of the humerus

Most of the forearm muscles in the anterior compartment originate on the

muscles that move the pectoral girdle, muscles that move the glenohumeral joint, intrinsic muscles of the hand

Muscles of the pectoral girdle and upper limbs are organized into all of the following groups

muscles that move the coxal joint/thigh, thigh muscles that move the knee joint/leg, intrinsic muscles of the foot

Muscles of the pelvic girdle and lower limbs are grouped by all of the following criteria

include the anconeus and supinator, are mostly extensors, are innervated by the radial nerve

Muscles with origins on the lateral epicondyle of the humerus

coracobrachialis

Of all the scapular muscles, the only one that flexes and adducts the arm is the

infraspinatus and teres minor

Of the following, which muscles are antagonists to the subscapularis?

iliopsoas and gluteus minimus

Of the following, which two muscles are antagonists to different actions of the gluteus maximus?

extensors of the knee joint

The ____________ all insert on the tibial tuberosity (by way of the patella).

teres major

The ____________ assists the subscapularis in medial rotation of the arm.

quadriceps femoris

The anterior thigh muscles that extend the leg are collectively called the

stabilize the pectoral and pelvic girdles, control the movements of the upper and lower limbs, work in groups that are either synergistic or antagonistic

The appendicular muscles

abduct; adduct

The dorsal interossei ____________ the toes, while the plantar interossei ____________ the toes.

shares a tendon of insertion and is often regarded as a single muscle

The gastrocnemius and soleus are like the psoas major and iliacus in that each pair

plantar flex the foot and flex the toes

The posterior muscles of the leg

originates on the iliac crest and anterior superior iliac spine, inserts on the iliotibial tract of the fascia lata, abducts and medially rotates the thigh

The tensor fasciae latae

median; ulnar

The thenar muscles are all innervated by the ____________ nerve; the hypothenar muscles, by the ____________ nerve.

invert

The tibialis anterior and tibialis posterior act synergistically to ____________ the foot.

dorsiflexion

The tibialis anterior opposes the soleus by performing which action?

sartorius

Which muscle performs most of the actions required to cross one's legs?

rectus femoris

What is the only muscle that flexes the thigh and extends the leg?

lateral rotation of the thigh

What is the sole action of all five deep muscles of the gluteal region?

lateral rotation

Which action is performed by the most muscles at the coxal joint?

extension

Which action is performed by the most muscles at the wrist?

extension

Which action is performed my most muscles in the posterior compartment of the forearm?

knee

Which joint has the most flexors?

fibularis longus and fibularis brevis

Which leg muscles work together to evert the foot?

serratus anterior

Which muscle contributes most directly to the careers of boxers?

gluteus maximus

Which muscle extends and laterally rotates the thigh?

latissimus dorsi

Which muscle extends, adducts, and medially rotates the arm?

gluteus medius

Which muscle has the same actions as the tensor fasciae latae and is a frequent site of intramuscular injections?

tibialis anterior

Which muscle is the primary antagonist of the muscles that insert on the calcaneus?

triceps brachii

Which muscle is the prime mover in extension of the elbow?

serratus anterior

Which muscle is the prime mover in protraction of the scapula?

palmaris longus

Which muscle of the upper limb inserts onto specialized areas of deep fascia rather than bone?

extensor carpi ulnaris, flexor carpi radialis, abductor pollicis longus

Which of these muscles move the wrist?

the two develop separately in the embryo and later join at the patella

Which statement is false regarding the quadriceps tendon and patellar ligament?

gastrocnemius

Which superficial leg muscle has two bellies that compose the calf?

adductor magnus

Which thigh adductor has an origin on the ischial tuberosity?


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