HISTOLOGY OF THE RESPIRATORY SYSTEM

Question 1

8 Conducting portion:

Answer 1

1- Nasal cavity.
2- Nasopharynx.
3- Larynx.
4- Trachea.
5- Primary bronchi (extrapulmonary bronchi).
6- Intrapulmonary bronchi:
- lobar bronchi
- segmental bronchi
7- Primary bronchioles (preterminal bronchioles).
8- Terminal bronchioles.

Question 2

4 Respiratory portion:

Answer 2

1- Respiratory bronchioles.
2- Alveolar ducts .
3- Alveolar sacs.
4- Pulmonary alveoli.

Question 3

portion of N.C.:
Vestibule.

Answer 3

Anterior

Question 4

The _____ divides the
nasal cavity into two halves
(right and left).

Answer 4

nasal septum

Question 4

3 Vestibule of Nasal Cavity

Answer 4

Epidermis:
Dermis
Wall

Question 5

portion of N.C.:
a- Respiratory region.
b- Olfactory region.

Answer 5

Posterior

Question 5

3 Contents of Dermis

Question 6

1- Hyaline cartilage.
2- Cancellous (spongy) bone.

Question 7

Pseudo-stratified ciliated columnar epithelium with goblet cells
(Respiratory epithelium).

Answer 7

Epithelium

Question 8

what does Lamina propria ( Sub-epithelial C.T.) contains

Answer 8

1- Large arterial plexuses
2- venous sinuses
(Highly vascularized C.T.)
3- Many seromucous glands (acini).
4- Abundant lymphoid elements:
Including occasional lymphoid nodules,
plasma cells & mast cells