Question 1

Match each muscle with the corresponding description of its action.
-Cause(s) sideways movement during mastication
A)Buccinator
B)Corrugator supercilii
C)Epicranius
D)Orbicularis oculi
E)Pterygoid
F)Sternocleidomastoid

Accepted Answer

The pterygoid muscle causes sideways movement during mastication.

Answer: A
 The buccinator muscle also contributes to the sideways movement during mastication, as it helps to keep the food between the teeth.

Other muscles listed do not have a significant action in sideways movement during mastication.

Question 2

Match each muscle with the corresponding description of its action.
-Flex(es) the head (prayer muscle)
A)Buccinator
B)Corrugator supercilii
C)Epicranius
D)Orbicularis oculi
E)Pterygoid
F)Sternocleidomastoid

Accepted Answer

The sternocleidomastoid muscle flexes the head and is sometimes referred to as the "prayer muscle."

Note: None of the other muscles listed have the primary action of flexing the head.

Question 3

The masseter and temporalis muscle are muscles of mastication that have opposite functions.

Accepted Answer

The masseter and temporalis muscle are both muscles of mastication and work together to elevate the mandible (lower jaw) during chewing. They have the same function, not opposite functions.

Question 4

Match each muscle with the corresponding description of its action.
-Create(s) smile expression
A)Buccinator
B)Corrugator supercilii
C)Epicranius
D)Orbicularis oculi
E)Pterygoid
F)Sternocleidomastoid

Accepted Answer

The buccinator muscle creates the smile expression by pulling the corners of the mouth towards the sides.

Answer: B 
 The corrugator supercilii muscle is responsible for the vertical wrinkles between the eyebrows that occur when someone frowns or expresses confusion.

Answer: D 
 The orbicularis oculi muscle is responsible for closing and squinting the eyes, which is a component of a genuine smile.

Answer: E 
 The pterygoid muscles are involved in chewing and do not play a significant role in facial expression.

Answer: F 
 The sternocleidomastoid muscle is responsible for turning the head towards the side and does not contribute to facial expression.

Cannot determine: C 
 The epicranius muscle is a broad muscle that covers the top of the skull and is involved in moving the scalp, but it does not play a significant role in facial expression.

Question 5

Match each feature with the muscles named by that feature.
-Deltoid
A)Location
B)Function
C)Shape
D)Direction of fibers
E)Number of heads or divisions
F)Points of attachment

Accepted Answer

The deltoid muscle forms the curve of the shoulder.

Answer: G
 The deltoid muscle is located in the upper arm and connects to the shoulder joint, which is adjacent to the thigh.

Answer: I
 The deltoid muscle attaches to the upper arm bone and wraps around to the back of the armpit.

Question 6

Match each feature with the muscles named by that feature.
-Brachialis
A)Location
B)Function
C)Shape
D)Direction of fibers
E)Number of heads or divisions
F)Points of attachment

Accepted Answer

The term "brachialis" refers to the location of the muscle, as it is located in the arm (brachium).

Question 7

Match each feature with the muscles named by that feature.
-Rectus
A)Location
B)Function
C)Shape
D)Direction of fibers
E)Number of heads or divisions
F)Points of attachment

Accepted Answer

The term "rectus" refers to the direction of muscle fibers, indicating that they run straight or parallel to the body's midline.

Question 8

Match each feature with the muscles named by that feature.
-Triceps
A)Location
B)Function
C)Shape
D)Direction of fibers
E)Number of heads or divisions
F)Points of attachment

Accepted Answer

The term "triceps" refers to a muscle with three heads or divisions.

Question 9

The two levator ani and coccygeus muscles form most of the pelvic floor.

Accepted Answer

The levator ani and coccygeus muscles are the major muscles that make up the pelvic floor.

Question 10

The internal oblique muscle is the deepest muscle in the abdominal wall.

Accepted Answer

The internal oblique muscle is not the deepest muscle in the abdominal wall. The transverse abdominis muscle is the deepest muscle.

Question 11

Match each muscle with the corresponding description of its action.
-Draw(s) the eyebrows together, producing vertical wrinkles (frowning)
A)Buccinator
B)Corrugator supercilii
C)Epicranius
D)Orbicularis oculi
E)Pterygoid
F)Sternocleidomastoid

Accepted Answer

The muscle responsible for drawing the eyebrows together to produce vertical wrinkles (frowning) is the corrugator supercilii.

Question 12

Match each muscle with the corresponding description of its action.
-Raise(s) the eyebrows (surprise)
A)Buccinator
B)Corrugator supercilii
C)Epicranius
D)Orbicularis oculi
E)Pterygoid
F)Sternocleidomastoid

Accepted Answer

The epicranius muscle, specifically the frontalis part, is responsible for raising the eyebrows, which is often associated with expressions of surprise.

Question 13

The linea alba is a band of connective tissue that runs over the rectus abdominis from the xiphoid process to the pubis.

Accepted Answer

The linea alba is indeed a band of connective tissue that runs over the rectus abdominis from the xiphoid process to the pubis.

Question 14

During inspiration, the diaphragm contracts and flattens, which increases the size of the thoracic cavity allowing air to enter the lungs.

Accepted Answer

During inspiration, the diaphragm is a muscle that contracts and moves downward, causing the volume of the thoracic cavity to increase and air to be drawn into the lungs.

Question 15

Match each muscle with the corresponding description of its action.
-Close(s) the eye
A)Buccinator
B)Corrugator supercilii
C)Epicranius
D)Orbicularis oculi
E)Pterygoid
F)Sternocleidomastoid

Accepted Answer

The orbicularis oculi muscle is responsible for closing the eye.

Answer: B 
 The corrugator supercilii muscle is responsible for furrowing the eyebrows (as in a frown).

Answer: E 
 The pterygoid muscles are responsible for moving the jaw from side to side.

Note: None of the other listed muscles have actions that match those described.

Question 16

The main function of the trapezius muscle is to move the scapulae.

Accepted Answer

The trapezius muscle is responsible for various movements of the scapulae, including elevation, depression, and rotation. It also assists in neck and head movements.

Question 17

Both the interspinales and the multifidus groups are muscles of the back.

Accepted Answer

Both the interspinales and the multifidus muscles are located in the back, making the statement true.

Question 18

Match each feature with the muscles named by that feature.
-Adductors
A)Location
B)Function
C)Shape
D)Direction of fibers
E)Number of heads or divisions
F)Points of attachment

Accepted Answer

The answer of Match each feature with the muscles named...

Question 19

Match each feature with the muscles named by that feature.
-Sternocleidomastoid
A)Location
B)Function
C)Shape
D)Direction of fibers
E)Number of heads or divisions
F)Points of attachment

Accepted Answer

The sternocleidomastoid muscle is named for its points of attachment: the sternum (sterno-), the clavicle (cleido-), and the mastoid process of the skull.

Question 20

The muscles that move the head are paired muscles on opposite sides of the body.

Accepted Answer

The muscles that move the head are paired muscles on opposite sides of the body, such as the sternocleidomastoid and trapezius muscles.

Quiz 15: Axial Muscles

Match each muscle with the corresponding description of its action. -Cause(s) sideways movement during mastication

Match each muscle with the corresponding description of its action. -Flex(es) the head (prayer muscle)

The masseter and temporalis muscle are muscles of mastication that have opposite functions.

Match each muscle with the corresponding description of its action. -Create(s) smile expression

Match each feature with the muscles named by that feature. -Deltoid

Match each feature with the muscles named by that feature. -Brachialis

Match each feature with the muscles named by that feature. -Rectus

Match each feature with the muscles named by that feature. -Triceps

The two levator ani and coccygeus muscles form most of the pelvic floor.

The internal oblique muscle is the deepest muscle in the abdominal wall.

Match each muscle with the corresponding description of its action. -Draw(s) the eyebrows together, producing vertical wrinkles (frowning)

Match each muscle with the corresponding description of its action. -Raise(s) the eyebrows (surprise)

The linea alba is a band of connective tissue that runs over the rectus abdominis from the xiphoid process to the pubis.

During inspiration, the diaphragm contracts and flattens, which increases the size of the thoracic cavity allowing air to enter the lungs.

Match each muscle with the corresponding description of its action. -Close(s) the eye

The main function of the trapezius muscle is to move the scapulae.

Both the interspinales and the multifidus groups are muscles of the back.

Match each feature with the muscles named by that feature. -Adductors

Match each feature with the muscles named by that feature. -Sternocleidomastoid

The muscles that move the head are paired muscles on opposite sides of the body.