Muscles Of The Head And Neck

Question 1

What are the three groups of the muscles of the head of concern?

Answer 1

Muscles of facial expression, muscles of mastication (chew), extraocular muscle (moving eyeballs)

Question 2

What are the 2 muscles of the neck of concern?

Answer 2

Platysma and sternomastoid

Question 3

Where does the muscle of the face take their origin?

Answer 3

From the skull and insert into the skin

Question 4

What are the 4 muscles of facial expression?

Answer 4

Occipitafrontalis, orbicularis oculi, orbicularis oris, buccinator

Question 5

What is the action of occipitofrontalis?

Answer 5

Raises the eyebrows

Question 6

What is the action of orbicularis oculi?

Answer 6

Closes the eye tightly

Question 7

What is the action of the orbicularis oris?

Answer 7

Closes the mouth

Question 8

What is the action of buccinator?

Answer 8

Compresses the cheek

Question 9

What is the nerve supply of all the muscles of facial expression?

Answer 9

7th cranial nerve = facial nerve

Question 10

What is the nerve supply of all the muscles of mastication?

Answer 10

5th cranial nerve = trigeminal nerve

Question 11

What are the 4 types of muscle of mastication?

Answer 11

Temporalis, masseter, medial ptyregoid, lateral ptyregoid

Question 12

What type of muscles are responsible for closing the mouth?

Answer 12

Temporalis, masseter, medial ptyregoid

Question 13

What is the action of lateral ptyregoid ?

Answer 13

Opens the mouth

Question 14

What do the medial and lateral ptyregoid produce together ?

Answer 14

Side to side movement, chewing movement

Question 15

What does extraocular muscles mean?

Answer 15

Muscles surrounding the outside of the eye

Question 16

What are the 7 types of muscles of extraocular

Answer 16

Levator palpebrae superioris
Superior rectus
Medial rectus
Inferior rectus
Inferior oblique
Lateral rectus
Superior oblique

Question 17

What are the extraocular muscles that are supplied by the 3rd cranial nerve = oculomoter nerve?

Answer 17

Levator palpebrae superioris
Superior rectus
Medial rectus
Inferior rectus
Inferior oblique

Question 18

What is the lateral rectus supplied by?

Answer 18

6th cranial nerve = abducent nerve

Question 19

What is the superior oblique supplied by?

Answer 19

4th cranial nerve= trochlear

Question 20

What is the action of levator palpebrae superioris

Answer 20

Raises the upper eyelid

Question 21

What is the action of superior rectus?

Answer 21

Upward, medially

Question 22

What is the action of medial rectus?

Answer 22

Medially

Question 23

What is the action of inferior rectus?

Answer 23

Downward, medially

Question 24

What is the action of inferior oblique?

Answer 24

Upward, laterally

Question 25

What is the action of lateral rectus?

Answer 25

Laterally

Question 26

What is the action of superior oblique?

Answer 26

Downward, laterally

Question 27

What are the muscles of the neck?

Answer 27

Platysma, sternocleidomastoid

Question 28

What is platysma?

Answer 28

Thin sheet of muscle running in the superficial fascia of the neck

Question 29

What is the action of platysma?

Answer 29

Tenses the skin over the lower neck

Question 30

What is sternocleidomastoid?

Answer 30

Strap-like muscle descending obliquely at the side of the neck

Question 31

What is the action of sternocleidomastoid ?

Answer 31

Extends the head

Question 32

Answer 32

Question 33

Answer 33

Question 34

Answer 34

Question 35

Answer 35

Question 36

Answer 36

Question 37

Answer 37

Question 38

Answer 38

Question 39

Answer 39

Question 40

Answer 40

Question 41

Answer 41