Histo Lec: M15 - Respiratory System

Question 1

consists of the nasal cavity, trachea, bronchi, and bronchioles.

Answer 1

Conducting Portion

Question 2

Conducting Portion’s luminal surfaces

Answer 2

ciliated pseudostratified columnar epithelium and contain goblet cells

Question 3

Portion composed of millions of alveoli

Answer 3

Gas-Exchange Portion

Question 4

Gas exchange portion is lined by

Answer 4

extremely thin, simple squamous epithelium

Question 5

flattened cells that create a very thin diffusion barrier for gases

Answer 5

Type I pneumocytes

Question 6

secrete surfactant, which decreases the surface area between thin alveolar walls, and stops alveoli from collapsing during exhalation

Answer 6

Type II pneumocytes

Question 7

as the primary mode of entry of air into the airway, has both respiratory and olfactory functions

Answer 7

Nasal cavity

Question 8

Nasal vestibule is lined by

Answer 8

keratinized stratified squamous epithelium

Question 9

produce serous secretions that dissolve odiferous particles so that they can interact with the olfactory cilia

Answer 9

Bowman’s glands/Olfactory glands

Question 10

is a cartilaginous structure located cranial to the larynx

Answer 10

Epiglottis

Question 11

Pseudostratified columnar ciliated epithelium with seromucous glands in its lamina propria continues in to the larynx and covers the false vocal fold and the end of the laryngeal ventricle.

Answer 11

Larynx

Question 12

is attached to the cricoid cartilage of the larynx by the cricothyroid membrane and lies anterior and adjacent to the esophagus

Answer 12

Trachea

Question 13

trachea bifurcates at the _____ form a left and a right primary bronchus

Answer 13

carina

Question 14

tertiary bronchi continue to divide into smaller tubular structures called

Answer 14

terminal bronchioles

Question 15

These non-ciliated cuboidal cells contribute to the production of surfactant

Answer 15

exocrine bronchiolar cells or club cells

Question 16

marks the transition point from the conducting to the respiratory portion of the respiratory system

Answer 16

Respiratory bronchioles

Question 17

A marked feature of the respiratory portion of the airway is gaseous exchange

Answer 17

Alveoli

Question 18

The nostrils of the bird, which lead into the nasal cavity, may have a flap of horn to protect them called.

Answer 18

Operculum

Question 19

T/F: Birds do not have a pleural cavity as the lungs do not expand.

Answer 19

True

Question 20

T/F: Birds has a diaphragm, and their thoracic and abdominal cavities are not continuous

Answer 20

Birds lack a diaphragm, and their thoracic and abdominal cavities are continuous

Question 21

9 air sacs of birds

Answer 21

Cervical (2)
Clavicular
Cranial Thoracic (2)
Caudal Thoracic (2)
Abdominal (2)