Systems (Respiratory)

Question 1

What is the overall function?

Answer 1

• To bring oxygen in and push carbon dioxide out

Question 2

What organs make up the respiratory system?

Answer 2

• Nose, mouth, pharynx, trachea, bronchi, and lungs

Question 3

Function of the Organ: Nose / Mouth

Answer 3

• To breathe in the oxygen around you

Question 4

Function of the Organ: Pharynx

Answer 4

• This is the throat, oxygen needs to get through here to reach the trachea

Question 5

Function of the Organ:
Trachea

Answer 5

• The windpipe

Question 6

Function of the Organ: Bronchi

Answer 6

• At the lungs the trachea break off into two branches called bronchi

Question 7

Function of the Organ: Lungs

Answer 7

• The oxygen will pass into your lungs

Question 8

Gas Exchange

Answer 8

• Each of the bronchi branch again and again, ending in tiny air sacs called alveoli
• Each is surrounded by a network of capillaries

Question 9

Diffusion

Answer 9

• Oxygen always diffuses into the blood
• The oxygen concentration in blood is always less than the concentration of oxygen in the air
• As blood picks up the oxygen, it is carried to other parts of the body where it diffuses out of the blood and into the cells
• Oxygen + Carbon Dioxide have to diffuse through two thin walls: the walls of the capillaries and the alveoli

Question 10

Role of Cilia and Mucus

Answer 10

• Some epithelial cells that line the trachea and bronchi produce mucus
• Many epithelial cells have cilia, which helps move mucus and filter foreign material

Question 11

Muscles Involved

Answer 11

• The diaphragm

Question 12

Mechanisms of Breathing

Answer 12

• Diaphragm: Muscle under the lungs
• Intercostal Muscles: between the ribs

Question 13

External Respiration

Answer 13

• Exchange of gasses between lungs and blood

Question 14

Internal Respiration

Answer 14

• Exchange of gasses between blood and cells

Question 15

Cellular Respiration

Answer 15

• Energy releasing actions of the cell