Deck 12: Muscles of the Temporomandibular Joints

Question 1

Which are the attachments of the sternohyoid?

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

Answer 1

D

Question 2

Which muscles attach onto the hyoid bone?

A)omohyoid and digastric
B)geniohyoid and mylohyoid
C)sternohyoid and thyrohyoid
D)all of the above

Answer 2

D

Question 3

Which muscle attaches into the temporomandibular joint (TMJ)itself?

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

Answer 3

C

Question 4

Which are the attachments of the medial pterygoid?

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 5

Which muscles attach onto the coronoid process of the mandible?

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

Question 6

Generally,what is the location and what are the attachments of the suprahyoid group?

A)anterior neck,inferior to and attaching into the hyoid bone
B)anterior neck,superior to and attaching into the hyoid bone
C)posterior neck,inferior to and attaching into the hyoid bone
D)posterior neck,superior to and attaching into the hyoid bone

Question 7

Which are the attachments of the sternothyroid?

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 8

Which are the attachments of the masseter?

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 9

Which muscles attach onto the sternum?

A)sternohyoid and sternothyroid
B)sternohyoid and thyrohyoid
C)digastric and omohyoid
D)omohyoid and sternohyoid

Question 10

Which are the attachments of the thyrohyoid?

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 11

Which are the attachments of the mylohyoid?

A)inner surface of the mandible to the hyoid bone
B)temporal bone and mandible to the hyoid bone
C)outer surface of the mandible to the hyoid bone
D)styloid process of the temporal bone to the hyoid bone

Question 12

Which are the attachments of the stylohyoid?

A)inner surface of the mandible to the hyoid bone
B)temporal bone and mandible to the hyoid bone
C)outer surface of the mandible to the hyoid bone
D)styloid process of the temporal bone to the hyoid bone

Question 13

Generally,what is the location and what are the attachments of the infrahyoid group?

A)anterior neck,inferior to and attaching into the hyoid bone
B)anterior neck,superior to and attaching into the hyoid bone
C)posterior neck,inferior to and attaching into the hyoid bone
D)posterior neck,superior to and attaching into the hyoid bone

Question 14

Which are the attachments of the geniohyoid?

A)inner surface of the mandible to the hyoid bone
B)temporal bone and mandible to the hyoid bone
C)outer surface of the mandible to the hyoid bone
D)styloid process of the temporal bone to the hyoid bone

Question 15

The digastric attaches to which of the following bones?

A)mandible,hyoid,and frontal bone
B)mandible,hyoid,and temporal bone
C)sternum,hyoid,and temporal bone
D)sternum,clavicle,and occipital bone

Question 16

Which muscle attaches onto the internal surface of the mandible?

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

Question 17

The omohyoid attaches to which of the following bones?

A)sternum and first rib
B)hyoid and second rib
C)scapula,clavicle,and hyoid
D)scapula,sternum,and hyoid

Question 18

Which are the attachments of the temporalis?

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

Question 19

Which muscle attaches onto the zygomatic arch of the temporal bone?

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

Question 20

Which are the attachments of the lateral pterygoid?

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 21

Which is an action of the omohyoid?

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 22

Which is an action of the digastric?

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 23

Which is an action of the temporalis of the mandible at the temporomandibular joints (TMJs)?

A)elevation
B)depression
C)protraction
D)contralateral deviation

Question 24

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?

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

Question 25

Which is an action of the medial pterygoid?

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 26

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

A)elevation
B)depression
C)retraction
D)protraction

Question 27

Which is an action of the sternohyoid?

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 28

Which is (are)an action of the thyrohyoid?

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

Question 29

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

A)elevation
B)depression
C)retraction
D)protraction

Question 30

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

A)elevation
B)depression
C)retraction
D)protraction

Question 31

Which muscles attach onto the thyroid cartilage?

A)sternohyoid and thyrohyoid
B)geniohyoid and mylohyoid
C)sternothyroid and thyrohyoid
D)all of the above

Question 32

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

A)elevation
B)depression
C)retraction
D)protraction

Question 33

Which is an action of the lateral pterygoid of the mandible at the temporomandibular joints (TMJs)?

A)elevation
B)depression
C)protraction
D)retraction

Question 34

Which muscles attach onto the mandible?

A)sternohyoid and thyrohyoid
B)omohyoid and digastric
C)platysma and trapezius
D)geniohyoid and mylohyoid

Question 35

Which is an action of the sternothyroid?

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 36

Which is an action of the masseter of the mandible at the temporomandibular joints (TMJs)?

A)elevation
B)depression
C)contralateral deviation
D)none of the above

Question 37

Which muscles can elevate the mandible at the temporomandibular joints (TMJs)?

A)masseter and temporalis
B)temporalis and lateral pterygoid
C)lateral pterygoid and medial pterygoid
D)all of the above

Question 38

Which is an action of the stylohyoid?

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 39

Which is (are)an action of the thyrohyoid?

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

Question 40

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

A)elevation
B)depression
C)retraction
D)contralateral deviation

Question 41

Which is an eccentric function of the stylohyoid?

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

Question 42

Which is an eccentric function of the mylohyoid?

A)restrains/slows elevation of the hyoid bone
B)restrains/slows depression of the hyoid bone
C)restrains/slows elevation of the thyroid cartilage
D)restrains/slows depression of the mandible at the temporomandibular joints (TMJs)

Question 43

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

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

Question 44

Which is an eccentric function of the medial pterygoid?

A)restrains/slows elevation of the mandible at the temporomandibular joints (TMJs)
B)restrains/slows depression of the mandible at the temporomandibular joints (TMJs)
C)restrains/slows protraction of the mandible at the temporomandibular joints (TMJs)
D)restrains/slows closing the mouth

Question 45

Which is an eccentric function of the omohyoid?

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

Question 46

Which is an action of the mylohyoid?

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

Question 47

Which is an eccentric function of the masseter of the mandible at the temporomandibular joints (TMJs)?

A)restrains/slows elevation
B)restrains/slows depression
C)restrains/slows contralateral deviation
D)none of the above

Question 48

Which is an eccentric function of the sternothyroid?

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

Question 49

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?

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

Question 50

Which is an action of the geniohyoid?

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 51

Which is an eccentric function of the sternohyoid?

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

Question 52

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

A)restrains/slows elevation
B)restrains/slows ipsilateral deviation
C)restrains/slows retraction
D)restrains/slows contralateral deviation

Question 53

Which muscles can restrain/slow depression of the mandible at the temporomandibular joints (TMJs)?

A)masseter and temporalis
B)temporalis and lateral pterygoid
C)lateral pterygoid and medial pterygoid
D)all of the above

Question 54

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

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

Question 55

Which is an eccentric function of the digastric?

A)restrains/slows elevation of the mandible at the temporomandibular joints (TMJs)
B)restrains/slows depression of the mandible at the temporomandibular joints (TMJs)
C)restrains/slows retraction of the mandible at the temporomandibular joints (TMJs)
D)restrains/slows elevation of the hyoid bone

Question 56

Which is an eccentric function of the lateral pterygoid of the mandible at the temporomandibular joints (TMJs)?

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

Question 57

Which is (are)an eccentric function of the thyrohyoid?

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

Question 58

Which is an eccentric function of the temporalis of the mandible at the temporomandibular joints (TMJs)?

A)restrains/slows elevation
B)restrains/slows depression
C)restrains/slows retraction
D)restrains/slows contralateral deviation

Question 59

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

A)restrains/slows flexion
B)restrains/slows extension
C)restrains/slows right lateral flexion
D)restrains/slows left lateral flexion

Question 60

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

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

Question 61

What provides innervation for the thyrohyoid?

A)cervical plexus
B)hypoglossal nerve (CN XII)
C)brachial plexus
D)spinal accessory nerve (CN XI)

Question 62

What provides innervation for the sternothyroid?

A)cervical plexus
B)suboccipital nerve
C)brachial plexus
D)spinal accessory nerve (CN XI)

Question 63

What provides innervation for the masseter?

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

Question 64

The masseter is usually divided into how many parts?

A)2
B)3
C)5
D)6

Question 65

What provides innervation for the lateral pterygoid?

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

Question 66

What provides innervation for the medial pterygoid?

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

Question 67

What provides innervation for the stylohyoid?

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

Question 68

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

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

Question 69

What provides innervation for the temporalis?

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

Question 70

What are the four major muscles of mastication?

A)temporalis,temporoparietalis,medial pterygoid,and buccinator
B)temporoparietalis,occipitalis,frontalis,and buccinator
C)masseter,medial pterygoid,temporalis,and lateral pterygoid
D)none of the above

Question 71

What provides innervation for the omohyoid?

A)cervical plexus
B)hypoglossal nerve (CN XII)
C)brachial plexus
D)spinal accessory nerve (CN XI)

Question 72

What provides innervation for the sternohyoid?

A)cervical plexus
B)suboccipital nerve
C)brachial plexus
D)dorsal scapular nerve

Question 73

The direction of fibers of the medial pterygoid is essentially identical to the direction of fibers of which muscle?

A)temporalis
B)masseter
C)lateral pterygoid
D)none of the above

Question 74

What provides innervation for the geniohyoid?

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

Question 75

What provides innervation for the digastric?

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

Question 76

Which muscle of mastication is covered by the temporalis fascia?

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

Question 77

Which is an eccentric function of the geniohyoid?

A)restrains/slows elevation of the hyoid bone
B)restrains/slows elevation of the mandible at the temporomandibular joints (TMJs)
C)restrains/slows elevation of the thyroid cartilage
D)restrains/slows depression of the mandible at the temporomandibular joints (TMJs)

Question 78

What provides innervation for the mylohyoid?

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

Question 79

What cranial nerve innervates all four major muscles of mastication?

A)trigeminal (CN V)
B)facial (CN VII)
C)vagus (CN X)
D)spinal accessory (CN XI)

Question 80

What is another name for the medial pterygoid?

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