Lab Quiz 9

This muscle is named for the direction of its fibers.

Which muscles are highlighted? A. latissimus dorsi B. internal intercostal C. external intercostal D. serratus anterior

The biceps femoris is located in the anterior compartment of the thigh.

This muscle originates on the zygomatic arch and inserts at the angle and ramus of the mandible. It is responsible for closing the jaw.

Which muscle is highlighted? A. mentalis B. buccinator C. orbicularis oris D. orbicularis oculi

Which muscle is highlighted? A. extensor carpi radialis longus B. extensor carpi radialis brevis C. extensor digitorum D. extensor carpi ulnaris

Which muscle is highlighted? A. internal oblique B. rectus abdominis C. external oblique D. iliopsoas

Which muscle is highlighted? A. deltoid B. triceps brachii C. infraspinatus D. teres major

Which muscle is highlighted? A. soleus B. gastrocnemius C. fibularis brevis D. fibularis longus

On to which structure does the highlighted muscle insert? A. olecranon process of ulna B. medial epicondyle of ulna C. head of radius D. lateral epicondyle of ulna

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

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

Which muscle is highlighted? A. orbicularis oculi B. temporalis C. epicranius D. lateral pterygoid

These abdominal muscles are responsible for giving me my "six-pack." They also stabilize my pelvis when walking. They are the ___________ muscles.

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

Brachioradialis and sternocleidomastoid are named for ________.

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

Which muscle is highlighted? A. triceps brachii, medial head B. triceps brachii, long head C. brachialis D. biceps brachii

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

Which muscle is highlighted? A. serratus anterior B. deltoid C. pectoralis minor D. rectus abdominis

Which muscle is highlighted? A. zygomaticus minor B. orbicularis oculi C. epicranius (frontal belly) D. temporalis

The shape of this muscle gives it its name.

Which muscle is highlighted? A. serratus anterior B. teres minor C. deltoid D. infraspinatus

This powerful muscle is the prime mover of arm extension.

Which muscle is highlighted? A. semitendinosus B. gluteus maximus C. biceps femoris D. gluteus medius

This muscle is used in smiling.

Bruxism is a condition in which individuals clench or grind their teeth. It often occurs as they sleep, leading to jaw pain and damaged teeth. Which muscles contract during this nocturnal event?

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

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

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

Which muscle is highlighted? A. external oblique B. sartorius C. rectus abdominis D. internal oblique

Which muscle is highlighted? A. semimembranosus B. biceps femoris C. vastus lateralis D. semitendinosus Submit

Which muscle is highlighted? A. gluteus maximus B. piriformis C. latissimus dorsi D. quadratus femoris

Which muscle is highlighted? A. masseter B. zygomaticus major C. orbicularis oris D. risorius

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

This deep muscle flexes the trunk on the thigh.

Which muscle is highlighted? A. pectoralis minor B. subclavius C. teres major D. serratus anterior

Which muscle is highlighted? A. teres major B. deltoid C. latissimus dorsi D. supraspinatus

Which muscle is highlighted? A. semimembranosus B. semitendinosus C. gluteus medius D. gracilis

Which structure is indicated by the arrow? A. tensor fasciae latae B. gracilis C. vastus lateralis D. iliotibial tract

The primary action of muscle on the medial compartment of the thigh is ________.

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

This two-headed muscle bulges when the forearm is flexed. It is the most familiar muscle of the anterior humerus. It is the __________.

Which muscle is highlighted? A. iliopsoas B. tensor fasciae latae C. rectus femoris D. vastus lateralis

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

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

On to what common structure do both heads of the highlighted muscle insert? A. lateral epicondyle of ulna B. olecranon process of ulna C. styloid process of radius D. radial tuberosity of radius

Which muscle is highlighted? A. vastus intermedius B. rectus femoris C. adductor longus D. vastus lateralis

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

The __________ is the largest and most superficial of the gluteal muscles.

Which muscle is highlighted? A. extensor carpi radialis brevis B. pronator teres C. extensor carpi radialis longus D. brachioradialis

Which muscle is highlighted? A. gluteus medius B. piriformis C. quadratus femoris D. latissimus dorsi

Which muscle is highlighted? A. external oblique B. pectoralis minor C. rectus abdominis D. transversus abdominis

What is an action of the highlighted muscle? A. adduction of thigh at hip B. flexion of leg at knee C. extension of leg at knee D. abduction of thigh at hip

Which muscle is highlighted? A. risorius B. zygomaticus minor C. zygomaticus major D. buccinator