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Respiratory system

Respiratory system basics

TermDefinition
respiratory system exchanges gases (with individual cells, organs, organ systems and the environment )
gas exchange oxygen & carbon dioxide into and out of cells and the body
oxygen Gas the body needs. Also needed by mitochondria to help cells use glucose for energy.
carbon dioxide gas waste product
inhale breathe in
exhale breathe out
diaphragm Muscle under the lungs. Moves moves up and down during inhaling and exhaling
mitochondria cell organelle- creates energy- takes in oxygen and glucose and releases carbon dioxide and ATP (energy)
cilia hairs in the nose- trap particles and warm and moisten the air
nostril openings in the nose, contain cilia and mucus
larynx voice box
pharynx throat
trachea Tube that connects mouth and bronchi. Has rings of cartilage.
lungs Primary organs for gas exchange. One has 2 lobes, one has 3 lobes.
bronchi, bronchioles tubes that carry air into and out of the lungs
alveoli air sacs in the lungs, where diffusion of gases (oxygen & carbon dioxide) occurs
oxygenated blood with oxygen (oxygen rich)
deoxygenated blood with low oxygen levels (oxygen poor)
gas exchange in the alveoli Oxygen in, Carbon dioxide out
capillaries blood vessels that surround alveoli, diffusion of oxygen and carbon dioxide happens here.
diffusion movement of materials into and out of cells. Oxygen and carbon dioxide diffuse (diffusion) between the alveoli and capillaries
surface area alveoli have a lot of little surfaces, so a large surface area
order of air movement in the body (6 body parts) nostrils/mouth to pharynx, larynx, trachea, bronchi, bronchioles
breathing oxygen and carbon dioxide gas exchange
respiration oxygen is used to give cells energy
exhale breathe out
inhale breathe in
diaphragm muscle moves up and you.... exhale
diaphragm muscle moves down and you... inhale
gas we need oxygen
gas we excrete (give off as waste) carbon dioxide
site of gas exchange alveoli in the lungs
Created by: pmrocks
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