Muscles Of Mastication & Neck

Question 1

What is the masseter muscle responsible for?

Answer 1

Elevates mandible

The masseter muscle is one of the primary muscles used in mastication.

Question 2

What is the origin of the masseter muscle?

Answer 2

Zygomatic Arch

The masseter originates from the zygomatic arch.

Question 3

What is the insertion point of the masseter muscle?

Answer 3

Mandibular angle and Mandibular ramus

These are the points where the masseter attaches on the mandible.

Question 4

What action does the temporalis muscle perform?

Answer 4

Elevates and retracts mandible

The temporalis muscle assists in closing the jaw and pulling it backward.

Question 5

Where does the temporalis muscle originate?

Answer 5

Temporal fossa of the temporal bone

This area is a shallow depression on the side of the skull.

Question 6

What is the insertion point of the temporalis muscle?

Answer 6

Coronoid process of the mandible

This is a part of the mandible where the temporalis attaches.

Question 7

Fill in the blank: The __________ muscle elevates the mandible.

Answer 7

masseter

The masseter is crucial for the chewing process.

Question 8

Fill in the blank: The __________ muscle retracts the mandible.

Answer 8

temporalis

The temporalis plays a role in moving the jaw backward.

Question 9

What is the origin of the sternocleidomastoid muscle?

Answer 9

Manubrium of sternum and medial clavicle

The sternocleidomastoid muscle originates from two points: the manubrium of the sternum and the medial part of the clavicle.

Question 10

What is the insertion point of the sternocleidomastoid muscle?

Answer 10

Mastoid process of the temporal bone

The insertion of the sternocleidomastoid muscle is located at the mastoid process of the temporal bone.

Question 11

What is the primary action of the sternocleidomastoid muscle?

Answer 11

Flexes head and rotates head laterally

The sternocleidomastoid muscle is responsible for flexing the head forward and rotating it to the side.

Question 12

Fill in the blank: The sternocleidomastoid muscle originates from the _______ of the sternum and the medial clavicle.

Answer 12

manubrium

Question 13

True or False: The sternocleidomastoid muscle only flexes the head.

Answer 13

False

In addition to flexing the head, the sternocleidomastoid muscle also rotates the head laterally.