head and neck but better - muscles of mastication and neck

Question 1

muscles of mastication?

Answer 1

temporalis
masseter
medial pterygoid
lateral pterygoid

Question 2

which muscle lies on top of the temporal bone? where is its insertion

Answer 2

temporalis
coronoid process of mandible

Question 3

function of temporalis

Answer 3

elevation and retraction of mandible

Question 4

which muscle lies on top of the ramus of the mandible? What is its function?

Answer 4

masseter (deep and superficial head)
elevates and assists with protraction of the mandible

Question 5

what are the two muscles on the inside of the mandible?

Answer 5

medial and lateral pterygoid

Question 6

medial pterygoid details and function

Answer 6

superficial and deep head (like mandible - both begin with M)
lateral movement and protraction
slight elevation

Question 7

lateral pterygoid details and function

Answer 7

superior and inferior head
lateral movement and protraction
slight elevation

Question 8

what are muscles of mastication innervated by

Answer 8

mandibular branch of trigeminal nerve (C5)

Question 8

what is the function of the sternocleidomastoid? what is its innervation? what is its two heads?

Answer 8

flexes, laterally rotates head
accessory nerve innervation
sternal and clavicular head

Question 9

function and innervation of trapezius?

Answer 9

descending fibres = elevation
transverse fibres = retraction
ascending fibres = depression
rotation of scapula
lateral flexion of neck
posture
innervation = spinal accessory nerve (C11)

Question 10

parts of trapezius?

Answer 10

descending fibres - superior
transverse fibres - middle
ascending fibres - inferior

Question 11

flat muscle in front of neck? innervation? function?

Answer 11

platysma
tenses neck
depresses mandible
innervation = cervical branch of facial nerve (C7)