Nose: External Nose

Question 1

Shape

Answer 1

Pyramidal in shape having root and free apex

Question 2

Parts

Answer 2

1. Bony part
2. Cartilaginous part

Question 3

Bony part content

Answer 3

1. Nasal bones
2. Frontal processes of maxillary bones
3. Nasal process of frontal bone

Question 4

Cartilaginous part content

Answer 4

1. Median septal cartilage
2. Lateral cartilages (above)
3. Alar cartilages (below)

Question 5

Skin

Answer 5

1. Thick
2. Rich in sebaceous glands
3. Supplied by many cutaneous nerves and vessels

Question 6

Nerve supply

Answer 6

All derived from ophthalmic division of Trigeminal nerve
1. Infratrochlear nerve: to nose root
2. External nasal nerve: to nose Dorsum
3. Nasal branch of Infraorbital nerve: to nose side

Question 7

Atrial supply

Answer 7

1. Nasal branch of Infraorbital artery (maxillary artery)
2. Septal branch of superior labial artery (facial artery
3. Nasal branch of facial artery
4. Dorsal nasal artery of ophthalmic artery
   Corresponding veins end in maxillary, facial, and ophthalmic veins