Question 1

Which are the attachments of the temporalis?

Accepted Answer

A)  temporal fossa to the angle of the mandible
B)  frontal fossa to the angle of the mandible
C)  temporal fossa to the condyle of the mandible
D)  temporal fossa to the coronoid process and ramus of the mandible D

Question 2

Which are the attachments of the thyrohyoid?

Accepted Answer

A)  sternum to the thyroid cartilage
B)  thyroid cartilage to the hyoid bone
C)  scapula to the clavicle and the hyoid bone
D)  sternum to the hyoid bone B

Question 3

Which muscle helps guide the protraction (anterior)movement of the articular disc of the temporomandibular joint (TMJ)when the mandible is protracting at the TMJ?

Accepted Answer

A)  temporalis
B)  masseter
C)  lateral pterygoid
D)  medial pterygoid C

Question 4

What does the word omo mean?

Accepted Answer

A)  arm
B)  neck
C)  shoulder
D)  chest

Question 5

Which are the attachments of the medial pterygoid?

Accepted Answer

A)  inferior margins of both the zygomatic bone and the zygomatic arch of the temporal bone to the angle,ramus,and coronoid process of the mandible
B)  sphenoid bone to the mandible and the temporomandibular joint (TMJ) 
C)  sphenoid bone to the internal surface of the mandible
D)  temporal fossa to the coronoid process and ramus of the mandible

Question 6

What is another name for the medial pterygoid?

Accepted Answer

A)  internal pterygoid
B)  external pterygoid
C)  pterygoid minor
D)  pterygoid masticalis

Question 7

Which is an action of the geniohyoid?

Accepted Answer

A)  depression of the hyoid bone
B)  elevation of the hyoid bone
C)  elevation of the thyroid cartilage
D)  depression of the thyroid cartilage

Question 8

Which are the attachments of the sternothyroid?

Accepted Answer

A)  sternum to the thyroid cartilage
B)  thyroid cartilage to the hyoid bone
C)  scapula to the clavicle and the hyoid bone
D)  sternum to the hyoid bone

Question 9

What provides innervation for the mylohyoid?

Accepted Answer

A)  facial nerve (CN VII) 
B)  hypoglossal nerve (CN XII) 
C)  trigeminal nerve (CN V) 
D)  spinal accessory nerve (CN XI)

Question 10

Which is (are)an action of the thyrohyoid?

Accepted Answer

A)  elevation of the hyoid bone
B)  depression of the hyoid bone
C)  depression of the thyroid cartilage
D)  all of the above

Question 11

What provides innervation for the lateral pterygoid?

Accepted Answer

A)  glossopharyngeal nerve (CN IX) 
B)  facial nerve (CN VII) 
C)  vagus nerve (CN X) 
D)  trigeminal nerve (CN V)

Question 12

Which is an action of the medial pterygoid?

Accepted Answer

A)  elevation of the mandible at the temporomandibular joints (TMJs) 
B)  depression of the mandible at the temporomandibular joints (TMJs) 
C)  retraction of the mandible at the temporomandibular joints (TMJs) 
D)  opens the mouth

Question 13

Which are the attachments of the sternohyoid?

Accepted Answer

A)  sternum to the thyroid cartilage
B)  thyroid cartilage to the hyoid bone
C)  scapula to the clavicle and the hyoid bone
D)  sternum to the hyoid bone

Question 14

What provides innervation for the masseter?

Accepted Answer

A)  glossopharyngeal nerve (CN IX) 
B)  trigeminal nerve (CN V) 
C)  vagus nerve (CN X) 
D)  facial nerve (CN VII)

Question 15

What provides innervation for the digastric?

Accepted Answer

A)  facial nerve (CN VII) 
B)  hypoglossal nerve (CN XII) 
C)  trigeminal nerve (CN V) 
D)  a and c

Question 16

Which is an action of the stylohyoid?

Accepted Answer

A)  elevation of the hyoid bone
B)  depression of the hyoid bone
C)  elevation of the thyroid cartilage
D)  depression of the thyroid cartilage

Question 17

Which is (are)an action of the thyrohyoid?

Accepted Answer

A)  elevation of the hyoid bone
B)  elevation of the thyroid cartilage
C)  depression of the thyroid cartilage
D)  all of the above

Question 18

If a muscle crosses the spinal joints of the neck anteriorly with a vertical orientation to its fibers,what action of the neck at the spinal joints will it most likely have?

Accepted Answer

A)  flexion
B)  extension
C)  right lateral flexion
D)  left lateral flexion

Question 19

If a muscle attaches from the mandible to a point that is posterior to that mandibular attachment,what eccentric function of the mandible at the temporomandibular joints (TMJs)will this muscle most likely have?

Accepted Answer

A)  restrains/slows elevation
B)  restrains/slows depression
C)  restrains/slows retraction
D)  restrains/slows protraction

Question 20

What are the names of the two layers of the masseter?

Accepted Answer

A)  medial and lateral
B)  superficial and deep
C)  anterior and posterior
D)  internal and external

Exam 12: Muscles of the Temporomandibular Joints