Science- Respiratory System

Question 1

Breathing is the process that…

Answer 1

Brings oxygen into your body

Question 2

Breathing begins when…

Answer 2

You inhale air through nose or mouth> filtered by cilia and mucus> pharynx> epiglottis> larynx> trachea> bronchi> lungs> bronchioles> alveoli

Question 3

Cilia

Mucus

Answer 3

Tiny hairlike projections on inside respiratory passages

Thick slippery sticky substance that lines various structures and organs in body

Trap dirt + other particles + push particles back out nostril or down digestive system

Question 4

Pharynx

Answer 4

Tube at the meeting point of the airway passage and esophagus

Question 5

Epiglottis

Answer 5

Small flap that covers the airway tube during swallowing to prevent choking

Question 6

Larynx

Answer 6

Voice box

Contains vocal cords, vibrate as air passes through - producing the sounds of your voice

Question 7

Trachea

Answer 7

C-shaped bands (cartilage)

Airway passage that leads from larynx to lungs

Question 8

Bronchi

Answer 8

2 tubes that branch out from trachea into right and left lungs

Question 9

Bronchioles

Answer 9

small air tubes branching out from bronchi

Question 10

Alveoli

Answer 10

Tiny, thin walled sacs (gas exchange)

Question 11

Gas exchange

Answer 11

Process in which carbon dioxide passes into alveoli and oxygen into capillaries

Question 12

Capillaries

Answer 12

Network of tiny blood vessels

Question 13

Emphysema

Answer 13

Causes alveoli walls to lose elasticity > breathing increasingly difficult

Question 14

Smoking

Answer 14

Linked to heart disease
#1 cause of lung cancer
Destroys cilia lining your respiratory system

Question 15

Respiration

Answer 15

Act of breathing

Question 16

Cellular respiration

Answer 16

Process in which chemical energy from food changed into energy the cells use to function

Question 17

Thoracic cavity

Answer 17

Chamber of body protected by rib cage

Question 18

Rib cage

Answer 18

Bony frame formed by ribs around chest

Question 19

Disphragm

Answer 19

Sheet of muscle in lower chest moves downward with each inhalation

Question 20

Vital capacity

Answer 20

Greatest volume of air that can b expelled from the lungs after taking deepest possible breath

Question 21

Residual air

Answer 21

Volume of air remaining in lungs after maximal expiratory effort

Question 22

Nasal cavity

Answer 22

Warms, moistens and cleans air

Question 23

Lungs

Answer 23

Deliver oxygen for cellular respiration and excrete carbon dioxide
Major organs of respiratory system