Respiratory System

Question 1

Function of Nasal Cavity

Answer 1

• Hairs and cilia filter particles
• Mucous traps particles and moistens the air
• Blood vessels warm air up to body temperature

Question 2

Function of Respiratory System

Answer 2

• Takes oxygen from the atmosphere and deliver it to the bloodstream.
• Takes carbon dioxide from the bloodstream and expel it from the body.

Question 3

Nasal Cavity

Answer 3

2 cavities that contain hairs, cilia, mucous and a rich blood supply

Question 4

Anatomy

Answer 4

Nasal Cavity
Tongue 
Oral Cavity
Pharynx
Epiglottis
Larynx
Trachea
Lungs
Bronchi
Bronchioles
Alveoli
Diaphragm

Question 5

What is the pharynx and its function

Answer 5

muscular region at back of mouth

Function:
Passageway for air and food

Question 6

What is the trachea and its function?

Answer 6

long tube lined with cilia (tiny hairs) and mucous, made up of cartilage rings

Function

• Allows air to travel to and from the lungs
• Cilia helps filter out and remove dirt and bacteria from entering the lungs.
• Dirt and bacteria are pushed up into the esophagus

Question 7

What is the epiglottis and its function?

Answer 7

flap of skin at the top of the larynx
Function:
Prevents a bolus of food from entering the trachea

Question 8

What is the larynx and its function?

Answer 8

box shaped part, made of cartilage and elastic folds called the vocal cords.
Function:
Produces sound

Question 9

What are the bronchi and its functions?

Answer 9

2 branches of trachea that contain cartilage rings, mucous, and cilia

Function:
Delivers oxygen to each lung

Question 10

What is the Bronchiole and its function?

Answer 10

smaller branches of bronchi without cartilage and lined with smooth muscle

Function:
Deliver oxygen to alveoli

Question 11

What are the alveoli and what is its function?

Answer 11

small grape like sacs at the end of the bronchioles to maximize surface area

Function:
Allows for the diffusion of gases (O2 and CO2) between the air and blood.

Question 12

Gas exchange

Answer 12

O2 moves from the alveolus to capillaries through diffusion - movement from high concentration to low concentration. aka Inhaling

CO2 moves into alveolus by diffusion, collected from all the alveoli in the lungs and pushed back up and out the trachea to the mouth and nose. aka Exhaling