Respiratory system 11-1/2 Flashcards Preview

Biology 12 > Respiratory system 11-1/2 > Flashcards

Flashcards in Respiratory system 11-1/2 Deck (16)
Loading flashcards...
1
Q

Nasal cavity

A

space in which air is warmed, moistened and filtered

2
Q

nostril

A

air first enters the body through here

3
Q

pharynx

A

a cross roads leading to the esophagus or the trachea

4
Q

epiglottis

A

prevents food from entering the trachea

5
Q

glottis e

A

a slit with vocal chords

6
Q

larynx f

A

contains the vocal chords

7
Q

trachea g

A

tube with cartilaginous rings that allow air to pass to the bronchus

8
Q

bronchi h

A

a branch off the trachea leading to the bronchioles

9
Q

bronchioles i

A

smaller, numerous branches leading to the alveoli

10
Q

lungs j

A

contains millions of alveoli

11
Q

diaphragm k

A

large muscular sheet that contracts to increase thoracic pressure

12
Q

What is the function of the nose?

A
  • passage for the entrance of air

- air is warmed, filtered, moistened

13
Q

what does the nasal cavity contain?

A
  • mucus producing cells
  • hair
  • celia
  • rich supply of blood
14
Q

What circumstances does a person breathe with their mouth instead of nose?

A
  • larger volumes of air can be inhaled from the mouth
  • O2 is depleted and breathing rate increases
  • if the nasal passage is blocked
15
Q

How does air within the trachea differ between nose breathing and mouth breathing?

A
  • more pollen/particulates because it isn’t filtered

- colder and less moist

16
Q

What is an advantage to nose breathing?

A
  • more filtration, warm and moistness