Respiratory System- Lecture 10/19/21

Question 1

Conducting epithelium

Answer 1

AKA respiratory epithelium, pseudostratified, ciliated, columnar epithelium with goblet cells

Question 2

Location of conducting epithelium

Answer 2

-Nasal cavity
-Larynx, trachea
-Bronchi
-intrapulmonary bronchi
(Progression to non-ciliated, cuboidal epithelium)

Question 3

Non-motive cilia

Answer 3

Located in olfactory epithelium, important in smell

Question 4

Supporting cell

Answer 4

In olfactory epithelia, high nucleus

Question 5

Bipolar neuron

Answer 5

• Olfactory cell, responsible for smell

Question 6

Bowmans gland

Answer 6

Secretes fluid that covers the olfactory epithelia

Question 7

Kulchitsky cells

Answer 7

Enteroendocrine cells that exist in respiratory epithelium, secretes Catecholamine, serotonin, calcitonin etc

Question 8

Trachealis muscle

Answer 8

Contracts when we cough, also allows esophagus to expand during peristalsis

Question 9

C-shape hyaline cartilage

Answer 9

Diagnostic of trachea

Question 10

Tracheal glands

Answer 10

Seromucous submucosal glands (NO muscularis mucosae

Question 11

Intrapulmonary bronchi

Answer 11

Have discontinuous hyaline cartilage

Question 12

BALT

Answer 12

Bronchi associated lymphoid tissue

Question 13

Bronchiole

Answer 13

No mucosal glands, no cartilage, many club cells

Question 14

Club cells

Answer 14

Non-ciliated, produce surfactant, protect against inflammation and oxidative stress

Question 15

Terminal bronchiole

Answer 15

Bronchiole with respiratory bronchioles directly downstream

Question 16

Alveoli

Answer 16

Where gas exchange happens

Question 17

Surfactant

Answer 17

Dipalmitoylphosphatidylcholine (DPPC)

Coats aveolar surface to prevent collapse

Question 18

Type 1 pneumocystis

Answer 18

Long cytoplasm, facilitates gas exchange

Question 19

Type II pneumocyte

Answer 19

Secretes surfactant in response to signals, serve as progenitors for type I pneumocyte

Question 20

Pulmonary artery

Answer 20

Oxygen poor blood, shares an adventitia with bronchiole

Question 21

Pulmonary vein

Answer 21

Oxygen rich blood, travels through the alveoli