Anatomy Quiz: Muscular System

What type of action involves pulling the foot towards the leg?

Dorsiflexion

When you raise your toes towards your face, the movement in the leg is called:

Dorsiflexion

What is the action of the muscle at letter B?

Elevates ribs, protracts scapula

Both muscles A and B have this action.

Elevates the scapula

What type of action involves tilting the sole outward?

Eversion

When you move your right foot out to the right side, the movement in the leg is called:

Eversion

The action for muscle C.

Extends big toe and dorsiflexes the foot

What is the action of the muscle at C?

Extends finger 5

What is the action of the triceps brachii m.?

Extends forearm

Which muscle is located at I?

Extensor carpi radialis brevis m.

The muscle at B.

Extensor digitorum longus m.

Which muscle is located at J?

Extensor digitorum m.

Check all that apply. Which of these muscles are wrist and finger extensors?

Extensor digitorum m. Extensor indicis m.

The muscle at C.

Extensor hallucis longus m.

Which muscle is shown at A?

External intercostal mm.

Which muscle is at A?

External oblique m.

Check all that apply. These muscles can be clearly seen in this image.

External oblique mm. Rectus abdominis m.

Which of these has the appearance of a spider's web? (Fascial muscles are also attached to this.)

Fascia

Which muscle is labeled B?

Fibularis brevis m.

What is the action of the muscle at D?

Flexing vertebral column

In anatomical position, if you lean your head forward, what is the action in regards to the head and neck?

Flexion

Check all that apply. Which of these muscles are wrist and finger flexors?

Flexor digitorum superficialis m. Pronator teres m. Flexor carpi radialis m. Palmaris longus m.

Which muscle is at A2?

Gastrocnemius m.

Which superficial muscle has been removed on the left side of the body in this image?

Gluteus maximus m.

What is the insertion of both muscles A and B?

Humerus

What is the origin of the muscle at H?

Humerus (medial elbow)

Check all that apply. These muscles can be seen in the image below.

Iliocostalis Semispinalis m.

These muscles are part of which muscle group?

Iliopsoas group

Check all that apply. Which muscles can be clearly seen in this image?

Internal intercostal mm.

Which muscle is shown at B2?

Internal intercostal mm.

Check all that apply. Which muscles can be clearly seen in this image?2

Internal intercostal mm. Pectoralis minor m.

Check all that apply. Which muscles are more superficial than C?

Internal oblique m.

What is the function of intrinsic and extrinsic muscles in the back? Please respond in 1-2 complete sentences using your best grammar.

Intrinsic back muscles are deep back muscles and they help with posture. Extrinsic back muscles have more to do with the upper limb.

The most common ankle injury is when you "roll the ankle." The sole of the foot moves inward. What kind of movement is this?

Inversion

P is the tendon of which muscle?

K

There are four subcategories of fascicle arrangement in muscles. Which of these is NOT an example of a fascicle arrangement?

Lenticular muscles

Which muscle is at letter M?

Levator scapulae m.

What is muscle B's insertion?

Linea alba, ribs

Which muscle is shown at B?

Longissimus m.

In the diagram below, identify the structure at D.

Muscle fiber

Which muscle is located at F?

Palmaris longus m.

What muscle is located at A?

Pectineus m.

Check all that apply. These muscles can be clearly seen in this image.3

Pectoralis major m. Brachialis m. Serratus anterior m. Biceps brachii m.

Check all that apply. Which muscles can be clearly seen in this image?4

Pectoralis major m. Serratus anterior m. Diaphragm m.

In the diagram below, identify the structure at B.

Perimysium

When you tiptoe, the movement in the leg is called:

Plantar flexion

What type of action involves pulling the foot downward, away from the leg?

Plantarflexion

Check all that apply. These movements occur within the muscles of the leg.

Plantarflexion Eversion Inversion Dorsiflexion

If you are playing the piano, what position is your forearm in?

Pronation

The muscle at E.

Pronator quadratus m.

Which muscle is located at A?

Pronator teres m.

If you hug someone, what kind of action is this?

Protracting scapula

Check all that apply. Which muscles are visible in this image?

Psoas major m. Iliacus m.

Check all that apply. Which muscles are visible in this image?

Rectus femoris m. Sartorius m. Vastus medialis m. Vastus lateralis m.

Which muscle is shown at B?

Rhomboideus m.

External intercostal mm. origin and insertion?

Ribs

Which side of the body has a superficial view of the muscles?

Right

What is the insertion of the muscle at B?

Scapula

What is the muscle at C?

Semispinalis m.

Check all that apply. These muscles share the same origin—the ischial tuberosity.

Semitendinosus m. Biceps femoris m. Semimembranosus m.

Which one of these muscle types is voluntary?

Skeletal muscle

These are all golden rules of skeletal muscle activity EXCEPT:

Skeletal muscles can only push.

Which muscle is shown at C2?

Spinalis m.

Which of the following is NOT one of the 3 muscle types?

Straight

If you are holding soup, what position is your forearm in?

Supination

What is the anatomical movement when the forearm is positioned with the palms facing up?

Supine

What connects muscle to bone?

Tendon

The insertion of the muscle at D.

The insertion of the muscle at D.

Describe how the muscular system works with one of these systems. Skeletal system Cardiovascular system Digestive system Nervous system

The nervous system works with the muscular system by sending neural impulses from the brain to the muscles.

When actin and myosin are interlaced with each other and slide over each other, this is known as the sliding ______ model of contraction.

filament

The extensor pollicis indicis m. extends the _____ finger.

index

The thorax is considered in what region of the body?

neck and the abdomen

What is the official name of the "6-pack abs"? (Leave out the word "muscle." You must spell correctly.)

rectus abdominis

Which is more superficial, the muscle at A or the muscle at B?

A

Which muscle is more superficial, muscle A or muscle B?

A

Which muscle is more superficial? The muscle at A or the muscle at B?

A

Check all that apply. Which statements apply to the extensor carpi ulnaris m.?

Action: Extends and adducts hand Origin: Humerus and ulna Insertion: Base of hand Located on the posterior forearm

What is the action for both muscles B and C?

Adducts thigh

Which of these words does NOT describe slow-twitch muscle fibers?

Anaerobic

Muscles A, B, and C are part of what compartment?

Anterior

What is the insertion of the muscle at G?

Base of metacarpals 2 and 3

What muscle is located at letter A2?

Biceps femoris m.

In the diagram below, identify the structure at A.

Bone

The only intermediate layer in the forearm flexor is the flexor digitorum superficialis m. Where is this muscle located?

C

Which of the following is the muscle shown at A?

Tibialis anterior m.

Check all that apply. On the anatomical right side of the body, which muscles were removed to show the deeper muscle layers?

Trapezius m. Latissimus m.

Extensor pollicis brevis m. and extensor pollicis longus m. both have the same action, which ________the thumb and _________the hand.

extends abducts

What is the insertion of the muscle at A?

Clavicle

Which muscle is shown at A2?

Deltoideus m.

This muscle separates the thoracic cavity from the abdominal cavity.

Diaphragm

Muscles A, B, and C are part of the erector spinae group.

True

The pectoralis minor m. and the serratus anterior m. are both involved in the protraction of the scapula.

True

What muscle is located at letter A?

Vastus lateralis m.

Which muscle is located at letter C?

Vastus lateralis m.

Smooth muscles are found in _____________ . Cardiac muscles are found in _____________ . Skeletal muscles are found in ______________ .

walls of internal organs walls of heart attached to skeleton