H&N week 3- The face

Question 1

Label this diagram of the muscles of facial expression

Answer 1

Question 2

Label this diagram of the deep disection of the face.

Answer 2

Question 3

What is the medial palpebral ligament?

Answer 3

A node of connective tissue at the medial end of the eyelid.

This is the attachment for the eye muscles.

Question 4

What is this muscle and what is it’s function?

Answer 4

Levator labii Superiorus

Elevation of the upper lip and nose.

Question 5

Compare the two zygomaticus muscles

Answer 5

Minor Zygomaticus muscle is smaller and found medially.

Major Zygomaticus muscle is larger and found on its lateral side.

Question 6

Name and give the function of this muscle.

Answer 6

The Risourius muscle pulls the corner of the mouth out to the side.

Question 7

What is this muscle and what is its’ function

Answer 7

Depressor anguli Oris-

This pulls the corner of the mouth down

Question 8

What is this muscle and what is it’s function?

Answer 8

Platysma muscle which wrinkles the skin of the neck.

Question 9

What muscle is this and what is it’s function?

Answer 9

Depressor labi inferiorus-

This pulls the lower lip down.

Question 10

What is this muscle and what is it’s function?

Answer 10

Orbicularis oris

This provides a seal for your mouth.

Question 11

Name and function of this muscle:

Answer 11

Buccinator

Gives tone to the cheek and pushes food in between teeth when eating.

Question 12

compare the two parts of the orbicularis oculi?

Answer 12

The Orbital part (outer) contains courser fibres for closing the eyes.

The Palpebral part contains finer fibres for blinking.

Question 13

Name and function of this muscle.

Answer 13

Procerus muscle-

Contracts to wrinkle nose (look of concentration)

Question 14

Name and function of this muscle?

Answer 14

Frontalis muscle

Wrinkles the skin of the forehead and raises the eyebrows.

Question 15

Name and function

Answer 15

Epicranial Aponeurosis-

A flattened tendon that joins the two frontalis muscles together.

Question 16

Name the 5 branches of the facial nerve & what they supply

Answer 16

Temporal- supplies eye and forehead

Zygomatic -Supplies the lower part of the eye

Buccal- supplies upper lip

Marginal mandibular- lower lip and chin.

Cervical- supplies platsyma

Question 17

Discuss the two branches of the facial artery supplying the lip?

Answer 17

Superior labial branch- which supplies the upper lip.

Inferior labial branch- supplies the lower lip.

Question 18

What do we mean by the anastamosis of the facial artery?

Answer 18

The left and right superior labial branch.

AND

The left and right inferior labial branch

Meet end to end.

This is known as an anastomosis.

Question 19

What is the angular artery?

Answer 19

This is what we call the facial artery once it reaches the lateral side of the nose.

Question 20

What is the superficial temporal artery?

Answer 20

This supplies blood to the side of the head and is the final branch of the external carotid artery.

Question 21

What is the accessory parotid?

Answer 21

Lobules of the parotid gland found at the upper edge of the parotid duct.

Question 22

Where does the parotid duct open?

Answer 22

In the mouth opposite the upper 2nd molar.

Question 23

Where do you find the parotid lymph nodes?

Answer 23

Embedded on the surface of the parotid gland.

Question 24

Discuss the two coverings of the parotid salivary gland

Answer 24

We have the true and the false capsules:

(Inner) True capsule-This is fibrous

(Outer) False capsule- A deep layer of fascia- which does not expand meaning swelling of the parotid gland is sore.

Question 25

What 2 branches does the external carotid artery divide into at the angle of the mandible?

Answer 25

• Maxillary artery
• superficial temporal artery.

Question 26

What structures are found in the parotid gland?

Answer 26

Deepest:

External carotid artery

External jugular vein

Facial nerve

Most superficial.