Muscles of the head and neck

Question 1

Muscles derived from pharyngeal arch 1 (Mandibular)

Answer 1

Muscles of mastification, (Masseter, Temporalis, Lateral pterygoid, medial pterygoid). Mylohyoid & ant. belly of digastic
Tensor Tympani
Tensor Veli Palantini

Question 2

Muscles Derived from Pharyngeal arch 2 (Hyoid)

Answer 2

Muscles of facial expression
Stapedius
Stylohyoid
post. belly of digastric

Question 3

Muscles derived from Pharyngeal arch 3

Answer 3

Stylopharyngeus

Question 4

Muscles derived from Pharyngeal arch 4-6

Answer 4

Cricothyroid
Levator Veli Palatine
Constrictors of Pharynx
Intrinsic muscles of larynx

Question 5

Where does the Cranial nerve VII emerge through

Answer 5

Emerges through stylomastoid foramen, divides inside parotid gland

Question 6

What muscle raises the eyebrows

Answer 6

occipitofrontalis

Question 7

Function of levator labii superioris

Answer 7

Lifting the top lip

Question 8

Function of the corrugator supercilii

Answer 8

Draws the eyebrow downward and medially vertical wrinkes of the forehead, “frowning” muscles

Question 9

Functions of the orbicularis Oculi

Answer 9

Closes the eye,

Question 10

What does the palpebral portion of the orbicularis oculi do

Answer 10

Involuntarily closes the eye

Question 11

What does the orbital portion of the orbicularis oculi do

Answer 11

Conscious control

Question 12

What does the medial ligament do

Answer 12

Lacrimal function (tears), attaches to the lacrimal duct

Question 13

What are the three muscles in the nose

Answer 13

Nasalis, depressor, septi nasi, procerus

Question 14

What is the muscle in the chin

Answer 14

Mentalis

Question 15

What is the muscle in the neck (facial expression)

Answer 15

Platysma

Question 16

Function of orbicularis oris

Answer 16

Closes the mouth and puckers the lips when it contracts

Question 17

Function of buccinator

Answer 17

Pushes cheek against teeth and aids in chewing

Question 18

Function of risorius

Answer 18

Grinning

Question 19

Zygomaticus Major, Minor Function, Levator labii superioris, levator anglui oris

Answer 19

Pulling the corners of the lips superiorly and laterally (Smiling)

Question 20

Function of the mentalis

Answer 20

Elevate and protrude the lip

Question 21

What is mastication

Answer 21

Chewing

Question 22

What is cranial nerve 5

Answer 22

Trigeminal (sensory + motor-)

Question 23

What are the three branches of cranial nerve 5

Answer 23

Mandibular nerve V3, Maxillary Nerve (V2), Ophthalmic nerve V1

Question 24

Function of mandibular nerve

Answer 24

Movement of mandible during mastication

Question 25

Insertion of the temporalis

Answer 25

Mandible

Question 26

Buccinator muscle function

Answer 26

Closes the mouth and puckers the lips when it contracts

Question 27

What occurs during a bilateral contraction of the lateral pterygoid

Answer 27

Protrudes mandible

Question 28

What occurs during a unilateral contraction of the lateral pterygoid

Answer 28

Lateral motion towards opposite side for grinding

Question 29

The function of two digastric bellies

Answer 29

Stablises mandible, aids in elevating hyoid bone for swallow - opens jaw if hyoid fixed

Question 30

The function of mylohyoid

Answer 30

Elevates floor of the mouth and hyoid bone, contributes to opening if hyoid bone fixed

Question 31

Function of masseter

Answer 31

Elevates the mandible

Question 32

Function of temporalis

Answer 32

Elevates mandible and may contribute to the lateral movement

Question 33

Function of medial pterygoid

Answer 33

Elevates and protrudes mandible, - unilateral contraction, moves the jaw laterally

Question 34

Which cranial nerve innervates the muscles of mastication

Answer 34

Trigeminal nerve

Question 35

embryological origin of the muscles of facial expression

Answer 35

Pharyngeal arch II

Question 36

Embryological origin of the muscles of mastication

Answer 36

Pharyngeal Arch I

Question 37

Which cranial nerve innervates the muscles of facial expression?

Answer 37

Facial Nerve

Question 38

Muscle that elevates eyebrows and forehead; wrinkles forehead.

Answer 38

Frontalis

Question 39

Muscle that elevates eyebrows and forehead; wrinkles forehead

Answer 39

Orbicular Oris

Question 40

The muscle that Draws ala of the nose towards septum to compress the opening

Answer 40

Nasalis

Question 41

Muscle that depresses mandible and tenses skin of neck and lower face

Answer 41

Platysma

Question 42

Muscle that Closes eyelids

Answer 42

Obicularis Oculi

Question 43

Muscle that Elevates and protrudes lower lip and wrinkles chin

Answer 43

Mentalis

Question 44

The muscle that Presses cheek against molar teeth, aiding chewing

Answer 44

Buccinator

Question 45

Elevates lip, dilates nostril, raises angle of the mouth

Answer 45

Levator labii superioris

Question 46

The lateral and medial pterygoid muscles arise from the lateral pterygoid plate. Which unpaired skull bone are these plates part of?

Answer 46

Sphenoid

Question 47

The lateral and medial pterygoid muscles arise from the lateral pterygoid plate. Which unpaired skull bone are these plates part of?

Answer 47

Digastric