Respiratory System

Question 1

Main function or respiratory system

Answer 1

exchange repsiratory gases between body and the environment

Question 2

2 types of respirtion

Answer 2

external and internal respiration

Question 3

external respiration

Answer 3

exchanges O2 and CO2 between air(lungs) and the blood

Question 4

INternal Respiration

Answer 4

exchanges O2 and CO@ between the body cells and the blood

Question 5

How does cellular respiration affect O₂ and CO₂ movement?

Answer 5

Cells use O₂ and make CO₂, creating a concentration difference. O₂ diffuses into cells, CO₂ diffuses out to blood.

Question 6

Nasal passages

Answer 6

are the airways inside your nose that help filter, warm, and moisten the air you breathe in.

Question 7

nasal passages contain

Answer 7

mucous and tiny hairs called cilia

Question 8

What is the pharynx and its function?

Answer 8

is a tube that carries air to the lungs and food to the stomach.

Question 9

What is the trachea and its function?

Answer 9

The trachea (windpipe) is a tube that carries air from the throat to the lungs and is supported by rings of cartilage to keep it open.

Question 10

What is the larynx and its function?

Answer 10

The larynx (voice box) is a passageway for air that also produces sound for speaking and protects the trachea during swallowing.

Question 10

What are cilia and their function?

Answer 10

Cilia are tiny hairs in the respiratory tract that move mucus and trapped particles out of the lungs.

Question 10

where is the trachea located

Answer 10

infront of the esophagous

Question 11

What are the bronchi and their function?

Answer 11

The bronchi are two big tubes that carry air from the windpipe into the lungs.

Question 12

What controls the diameter of the bronchi and how are they protected?

Answer 12

Smooth muscles control airway diameter. Mucus traps dust and particles, and cilia moves them upwards to protect the lungs.

Question 13

What are alveoli and what do they do?

Answer 13

Alveoli are tiny air sacs in the lungs where oxygen enters the blood and carbon dioxide leaves the blood.

Question 14

What are the lungs and what do they do?

Answer 14

The lungs are two large organs in the chest that bring in oxygen from the air and remove carbon dioxide from the blood.

Question 15

when you inhale what happens to volume and pressure

Answer 15

Volume increases which makes the pressure decreased.

Question 16

when you exhale what happens to volume and pressure

Answer 16

Volume decreases which makes the pressure increased.

Question 17

rib cage

Answer 17

protects the organs inside

Question 18

rib( intercostal muscle)

Answer 18

muscle between the ribs that expands and contracts the rib cage. increases and decreases volume of chest cavity( space)

Question 19

diaphragm

Answer 19

Muscle under the lungs

Dome shaped

Moves down → chest space bigger → inhale

Moves up → chest space smaller → exhale

Question 20

pleural Membrane

Answer 20

A thin double layer around the lungs with fluid in between that helps the lungs move and stick to the chest wall

Question 21

what happnes to the diaphragm when it exahles

Answer 21

moves up - dome shaped position

Question 22

Concractions

Answer 22

When a muscle gets shorter and tighter to produce movement.

Question 23

What carries most of the oxygen in the blood?

Answer 23

Red blood cells using the protein hemoglobin.

Question 24

What element in hemoglobin binds oxygen?

Answer 24

iron

Question 25

How many oxygen molecules can one hemoglobin carry?

Answer 25

4

Question 26

How much does hemoglobin increase the oxygen-carrying capacity of blood?

Answer 26

From 4.5 mL/L to 200 mL/L.

Question 27

What percent of CO₂ is dissolved in the plasma?

Answer 27

7

Question 28

What percent of CO₂ is bound to hemoglobin?

Answer 28

23

Question 29

What percent of CO₂ is carried as bicarbonate ions?

Answer 29

70