Chp 30 Human breathing

Question 1

Nostrils

Answer 1

Allow air to enter the nose

Question 2

Nose

Answer 2

Warms, filters and moistens air

Question 3

Pharynx (Throat)

Answer 3

Connects nose and mouth to larynx

Question 4

Glottis

Answer 4

Opening of the larynx

Question 5

Epiglottis

Answer 5

Prevents food passing into the windpipe when you swallow

Question 6

Larynx (Voice box)

Answer 6

Makes sounds through vibration of vocal cords

Question 7

Trachea (windpipe)

Answer 7

Allows air to pass to lungs

Question 8

Cilla (microscopic hair)

Answer 8

Draws mucus and trapped dust/ microbes out of lungs

Question 9

Cartilage

Answer 9

Keeps trachea and bronchi open

Question 10

Bronchus

Answer 10

Transports air into lungs

Question 11

Bronchiole

Answer 11

Transports air into alveoli

Question 12

Alveoli (air sacs)

Answer 12

Site of gaseous exchange

Question 13

Pleural membranes

Answer 13

Allow friction-free movement of lungs

Question 14

Adaptations of alveoli for gas exchange 1

Answer 14

Large surface area of contact
Faster rate of gas exchange

Question 15

Adaptations of alveoli for gas exchange 2

Answer 15

One-celled thick
Steep concentration gradient for rapid diffusion

Question 16

Adaptations of alveoli for gas exchange 3

Answer 16

Slow blood flow
Maximum time for oxygenation and excretion of carbon dioxide

Question 17

Adaptations of alveoli for gas exchange 4

Answer 17

Elastic for efficient inspiration and expiration

Question 18

Adaptations of alveoli for gas exchange 5

Answer 18

Lining is moist
Dissolved gasses diffuse faster