Respiratory System

Question 1

What is the function of the Respiratory System?

Answer 1

Brings oxygen from the atmosphere to lungs
Provides a method of gas exchange which services muscles
Moves CO2 out of body
Allows voice production

Question 2

Define the Nasal Cavity

Answer 2

where air is warmed, moistened and filtered by small hairs

Question 3

Define the Pharynx

Answer 3

(Throat)
Passage for trachea (windpipe)

Question 4

Define the Larynx

Answer 4

(Voice Box)
Located at the start of the trachea
As air passes over, it allows you to speak

Question 5

Define the Trachea

Answer 5

(Wind pipe)
Divides into the right and left bronchus and connects to the lungs

Question 6

Define the Bronchial Tube

Answer 6

Left and tight tubes which feed air into the lungs

Question 7

Define Bronchioles

Answer 7

Smaller branches from the bronchial tubes which eventually turn into alveoli

Question 8

Define Alveoli

Answer 8

Where oxygen is exchanged for CO2 from the blood stream (CO2 goes from a greater concentration to a lesser concentration through gas exchange)
- Walls are extremely thin and are surrounded by capillaries

Question 9

Define the Diaphragm

Answer 9

Muscle found bellow the lungs

Question 10

Define Inhalation

Answer 10

Breathing in, the diaphragm contracts and flattens as the lungs expand and fill with air, the rib cage also pushes outwards

Question 11

Define exhalation

Answer 11

Breathing out, the diaphragm relaxes and ribs return to normal position as lungs push air out

Question 12

Define Gas exchange

Answer 12

During inhalation the alveoli are high in oxygen and low in CO2
During exhalation the alveoli are low in oxygen and high in Co2
Co2 is unloaded from blood into the alveoli to be breathed out during expiration
Oxygen moves from the air to the capillaries of the alveoli which attaches it self to the red blood cells