Respiratory System (Exam II)

Question 1

Embryologically, the respiratory tract originates as:

Answer 1

An outgrowth of the GI tract

Question 2

The respiratory system is derived from:

Answer 2

Laryngotracheal groove

Question 3

The laryngotracheal groove develops along the _____ midline of posterior pharynx around the 4th week of development

Answer 3

Ventral midline

Question 4

Later on, the laryngotracheal grove develops into:

Answer 4

Respiratory diverticulum

Question 5

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

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. Air filtration
3. Gas exchange

Question 8

Secondary functions of the respiratory system: (2)

Answer 8

Olfaction - nasal cavity
Phonation- larynx

Question 9

Respiration is divided into:

Answer 9

Respiratory and chemical respiration

Question 10

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

Answer 10

Chemical respiration

Question 11

Respiration associated with lungs- functions in gas exchange:

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 of _____ and a decrease of _____.

Answer 13

Increase in volume decrease in Pressure

Question 14

During inspiration:

The intercostal muscles _____.
The ribs _____.
The diaphragm (2) _____.
The resulting intrathoracic volume

Answer 14

Contract
Raise
Contracts & lowers