Chapter 6 Respiratory System

Question 1

Respiratory system

-Also known as pulmonary system

Answer 1

Ventilation and oxygen

Question 2

Trachea

Answer 2

• carries inhaled air from the larynx down to lungs.
• it is formed by 16 C-shaped rings of cartilage
• splits into 2 branches called bronchi
• each bronchi continues to split and get smaller till it ends at the Aveoli.

Question 3

Aveoli

Answer 3

small sacs within lungs where gas exchange occurs.
(exchange of carbon dioxide and oxygen.)
The process of moving oxygen to and from the aveoli is called ventilation

Question 4

Diaphram

Answer 4

divides chest cavity from abdominal cavity. It is a large muscle that is primarily controlled by the phrenic nerve

Question 5

Inhalation

Answer 5

(Active process)
Muscles of rib cage and diaphragm contract.
- diaphragm lowers and ribs move upward creating negative pressure in lungs. (with pulls air into the lungs)

Question 6

Exhalation

Answer 6

(Passive process)
Intercostal and diaphragm muscles relax.
ribs move downward and inward.
diaphragm moves upward creating positive pressure removing air from lungs.

Question 7

Capillaries

Answer 7

transfers oxygen into cells

Question 8

Ventilation

Answer 8

The process of moving oxygen to and from aveoli

Question 9

Respiration

Answer 9

Process of moving gases and nutrients between the cells and blood

• critical to life support
• oxygen is essential to sustain normal cell functions
• removal of carbon dioxide helps regulate body pH or relative acidity.

Question 10

Buffer system

Answer 10

Regulates its pH through this system

important element of this system is to remove carbon dioxide