Week I WET

Question 1

The skull is divided into 3 parts. Name them.

Answer 1

Neurocranium

Facial Skull

Mandible

Question 2

State the layers (3) of skull bone.

Answer 2

Compact bone

Spongy bone (diploe)

Compact bone

Question 3

What layer of bone houses red marrow?

Answer 3

Spongy bone

Question 4

The sagittal suture divides what 2 bones?

Answer 4

Right and left parietal bones.

Question 5

The coronal suture divides what 2 bones of the skull?

Answer 5

Frontal bone

Parietal bone

Question 6

Lamboid suture - divides what bones?

Answer 6

Parietal bones

Occipital bone

Question 7

The mastoid process occurs on which bone of the skull?

Answer 7

Temporal bone

Question 8

The Zygomatic Arch joins the zygomatic bone and …………….. ?

Answer 8

Temporal bone

Question 9

Styloid process is on which skull bone?

Answer 9

Temporal bone

Question 10

State the 3 divisions of the floor of the skull

Answer 10

Anterior cranial fossa

middle cranial fossa

posterior cranial fossa

Question 11

What is the largest foramen present in the skull, present in the posterior cranial fossa

Answer 11

foramen magnum

Question 12

Name 2 structures that pass through the foramen magnum.

Answer 12

Medulla (becomes spinal cord)

R + L Vertebral Arteries

Question 13

What are air sinuses?

Answer 13

Air spaces present within some skull bones.

Question 14

What is the role of air sinuses?

Answer 14

DECREASE weight of skull

Question 15

Superior nuchal line is present on which skull bone?

Answer 15

Occipital

Question 16

Name the 5 layers of the scalp.

Answer 16

Skin

Connective Tissue

Aponeurosis

Loose connective tissue

Periosteum

Question 17

Which layer of the scalp is richly supplied by blood vessels?

Answer 17

Connective tissue layer.

Question 18

The 3rd layer of the scalp, the epicranial aponeurosis, connects what muscular structures?

Answer 18

frontal and occipital bellies of occipitofrontalis muscle.

Question 19

Regarding cutaneous innervation of the scalp, what nerve supplies the anterior part? (anterior to the ear)

Answer 19

Trigeminal nerve (Cr N. V)

Question 20

State the 3 branches of the Trigeminal nerve.

Answer 20

Opthalmic - V1

Maxillary - V2

Mandibular - V3

Question 21

What is cutaneous innervation of the posterior half of the scalp (behind the ear) ?

Answer 21

C2, C3

Question 22

Muscles of facial expression are ALL innervated by which nerve and its branches?

Answer 22

Facial nerve = Cr N VII

Question 23

As the facial nerve leaves the cranial cavity, from which foramen does it emerge onto the side of the face?

Answer 23

Stylomastoid foramen

Question 24

The facial nerve enters into what gland where it splits into its terminal branches?

Answer 24

Parotid gland

Question 25

The parotid glands are the largest of 3 pairs of salivary glands. Name the other 2 pairs.

Answer 25

Sub-lingual Sub-mandibular

Question 26

What type of gland is the Parotid?

Answer 26

Exocrine

Question 27

The parotid duct pierces which muscle of the face before entering the oral cavity?

Answer 27

Buccinator

Question 28

Opposite which molar tooth does the parotid duct enter into the oral cavity?

Answer 28

second superior molar tooth

Question 29

Name a nerve which passes into the parotid gland.

Answer 29

Facial nerve

Question 30

Name an artery which passes into the parotid gland.

Answer 30

External Carotid

Question 31

Name a vein which passes into the Parotid gland.

Answer 31

Retromandibular vein. or **Superficial temporal vein**

Question 32

Parotid gland receives both sympathetic and parasympathetic innervation. Which division is secretomotor?

Answer 32

Parasympathetic

Question 33

What is the parasympathetic supply to the Parotid gland?

Answer 33

Cranial nerve IX - Glossopharyngeal nerve

Question 34

What is the sympathetic innervation of the parotid gland?

Answer 34

Cervical nerve plexus Sympathetic innervation originates from the **_superior cervical ganglion,_** part of the **paravertebral chain.** Fibres from this ganglion travel along the **ECA** to reach the parotid gland.

Question 35

The facial artery arises from which artery?

Answer 35

External carotid artery.

Question 36

What bone does the facial artery wind around to reach the face?

Answer 36

Mandible.

Question 37

What muscle on the side of the face lies immediately posterior to the facial artery as it enters onto the face?

Answer 37

Masseter

Question 38

Where does the facial artery end?

Answer 38

Angular artery - inner corner of eye