Head And Tmj Anatomy

Question 1

Where is LA injected in the mandible , which nerve?

Answer 1

Through the mental foramen, inferior alveolar nerve part of the Trigeminal mandible division

You can also LA the superior alveolar nerve, slightly behind the infraorbital foramen

Question 2

2 processes of the mandible

Answer 2

Condylor and coronoid process

Question 3

What is the articulate tubercle

Answer 3

It prevents complete dissociation of the mandible

Question 4

Where does the optic nerve pass through

Answer 4

Optic foremen

Question 5

What passes through the superior orbital fissure?

Answer 5

Oculomotor
Trochlear
Trigeminal (ophthalmic division)
Abducens

Question 6

Which cranial nerves are found at the cavernous sinus

Answer 6

3
4
5a and b
6

Question 7

What drains into the cavernous sinus

Answer 7

Ophthalmic veins

Question 8

What is the danger of the ophthalmic vein and cavernous sinus

Answer 8

If there is surface infection, the infection flows through the ophthalmic vein and into the cavernous sinus. A lot of nerves are located at the cavernous sinus (CN3456).. could lead to thrombosis or sepsis

Question 9

What is the function of the internal and external jugular vein

Answer 9

The intern,a jugular vein drains the cerebrum, inside of the skull, most of external structures of the head and neck.

The external jugular vein drains some external structures eg. Posterior auricular vein or retro mandibular vein

Question 10

What percentage of the brain does the internal carotid artery supply

Answer 10

80%

Question 11

Structure of the articular disc

Answer 11

• found in the capsule
• Fibrocartilage
• concave undersurface
• concavoconvex upper surface

Question 12

Styloid process

Answer 12

From inferior part of petrous temporal bone to stylomandibular ligament?

Question 13

3 ligaments in the TMJ

Answer 13

Lateral
Stylomandibular
Sphenomandibukar

Question 14

Blood supply of TMJ

Answer 14

External carotid artery (superficial temporal branch and Maxillary arteries

Question 15

Nervous supply of TMJ

Answer 15

Auriculotemporal and Masseteric branch (all under V3)

Question 16

What artery lies at the pterion

Answer 16

Middle meningeal artery

Question 17

How many cranial bones

Answer 17

8

Question 18

How many facial bones

Answer 18

14

Question 19

What is the vomer bone

Answer 19

The single vomer bone separates the left and right nasal cavity

Question 20

What are the three cranial sutures

Answer 20

Coronal
Sagittal
Lambdoid

Question 21

What are fontanelkes

Answer 21

They are the spongy part of the skull in kids that overlap when they are born so that the head can leave the birth canal

Question 22

What part of the temporal bone is part of the pterion

Answer 22

Squamous part

Question 23

What cranialnerve is the nasopalatine nerve a part of

Answer 23

Maxillary branch of the Trigeminal nerve

Nasociliary is part of the ophthalmic branch of Trigeminal nerve

Question 24

Function of the emissary veins

Answer 24

Drains the extracranialsystem into the larger meningeal veins and the ducal venous sinuses

Question 25

What supplies general sensation to the tongue

Answer 25

Anterior 2/3 general sensation mandibular branch of Trigeminal
Posterior 1/3 general sensation Glossopharyngeal

Question 26

Special taste sensation. To tongue

Answer 26

Anterior 2/3 - facial nerve chorda tympani branch
Posterior 1/3 - Glossopharyngeal

Question 27

Motor function to tongue

Answer 27

Hypoglossal
Vagus - palatoglossus

Question 28

What are the muscles of the tongue

Answer 28

Intrinsic muscles
Hyoglossus
Genioglossus
Styloglossus

Question 29

Petrous temporal bone

Answer 29

Where the middle and inner ear sits

Question 30

What does the middle meningeal artery supply? (Pterion)

Answer 30

Supplies the dura mater

Question 31

Describe the venous drainage of the head

Answer 31

Emissary veins or ophthalmic veins -> dural venous sinuses like cavernous sinus -> internal jugular vein