Respiratory System (Exam II)

Question 1

Embryologicially the respiratory tract originate as an outgrowth of the:

Answer 1

GI tract

Question 2

The respiratory tract is derived from the:

Answer 2

Laryngotracheal groove

Question 3

Laryngotracheal groove develope along the _______ of posterior pharynx around the 4th week of development

Answer 3

Ventral midline

Question 4

Later on, the laryngotracheal groove develops into the:

Answer 4

Respiratory diverticulum

Question 5

Later on, when the laryngotracheal groove develops into the respiratory diverticulum, it does this as an:

Answer 5

Outgrowth of the esophagus

Question 6

The respiratory diverticulum grows into & interacts with the surrounding:

Answer 6

Mesoderm

Question 7

Primary functions of the respiratory tract (3):

Answer 7

1- air conduction
2- filtration
3- gas exchange

Question 8

Secondary functions of the respiratory system: (2)

Answer 8

1- olfaction in nasal cavity
2- phonation (larynx)

Question 9

Respiration is divided into:

Answer 9

Mechanical & chemical respiration

Question 10

O2 is carried to tissues for cellular respiration (oxidative metabolism ——> ATP energy)

Answer 10

Chemical respiration

Question 11

Respiration associated with lungs- functions in gas exchange (O2 & CO2)

Answer 11

Mechanical respiration

Question 12

Thin dome-shaped muscle that separates the thoracic cavity from abdominal cavity in mammals

Answer 12

Diaphragm

Question 13

During inspiration we have an increase in _____ and a decrease in ____

Answer 13

Volume; pressure

Question 14

During inspiration:

Intercostal muscles:
Ribs:
Diaphragm (2):
The resulting intrathoracic volume:

Answer 14

Contact
Raise
Contracts & lowers