Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biology > Human Breathing System > Flashcards

Human Breathing System Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Biology flashcards Biology 101 flashcards
1
Q

Where is the breathing system

A

Thoracic cavity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Function of the breathing system

A

Gas exchange
Taking in oxygen
Excrete water vapor and carbon dioxide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Nasal cavity

A

Produces mucous
Tiny hairs to filter incoming air
Moist to humidify moving air

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Pharynx

A

Throat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Epiglottis

A

Flap of tissue at the bottom of the pharynx
Closes over glottis during swallowing
Allows food down the oesophagus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Larynx

A

Voice box
Contains vocal chords
Produces sound by modulating the flow of air leaving the lungs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Trachea

A

Windpipe

Directs the flow of air in and out of the lungs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Rings of cartilage

A

Prevents trachea from collapsing at low pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Alveoli

A

Tiny air sacs, site for gas exchange
• Thin walls for diffusion
• Numerous
• Good blood supply maximizing absorbed oxygen
• Moist to diffuse and dissolve gases more quickly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Diaphragm

A

Sheet of muscle at the bottom of the rib cage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Rib Cage

A

12 pairs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Gas Exchange

A

The process of oxygen diffusing into the bloodstream and water and carbon dioxide diffusing out

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Asthma

A
  • Chronic inflammation of the bronchioles
  • SYMPTOMS: Wheezy breathing, tightness of chest and shortness of breath
  • CAUSE: Inflammation of the bronchioles by dust, pollen or air pollution
  • PREVENTION: Avoid allergens like pollen, dust or air pollution
  • TREATMENT: An inhaler containing bronchodilators
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Carbon dioxide is acidic or basic??

A

Acidic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How does oxygen travel in body

A

Inhaled through alveolus
Dissolves in moisture
Then through endothelial wall of alveolus
Into bloodstream then red blood cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

How does carbon dioxide travel in body

A

Dissolves in plasma
Then through endothelial wall of alveolus into moisture
Evaporates into air space
Excreted through lungs

17
Q

Inhalation

A

Active process involving brain and inspiration muscles

18
Q

Exhalation

A

A passive process involving the recoil of the elastic lung tissue

19
Q

Mechanism of Breathing

A
  • Brain sends a nerve impulse to inspiratory muscles
  • Intercostal muscles and diaphragm contract
  • Diaphragm flattens
  • Intercostal muscles move up and out
  • Volume of thorax increases
  • Thoracic air pressure decreases inside cavity
  • Air rushes into lungs and alveoli
  • Lungs expand and fill thoracic cavity

Biology (38 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions