20 terms

Respiratory System

by E. Hung @ 2014
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Carbon dioxide
is a waste product produced during respiration
Respiratory system
includes the nose, pharynx, larynx, trachea, bronchi, and lungs. It provides for gas exchange, intake of O2 and the removal of CO2
Lungs
Pinkish spongy organs responsible gas exchange.
pharynx
back of the mouth - throat
larynx
also called voice box for making noise and sound; connecting the pharynx and trachea.
epiglottis
cartilage that seals off the larynx from food and liquids
trachea
tube supported by C-shaped rings of cartilage where inspired air passes from the larynx.
bronchus
Either of the two subdivisions of the trachea conveying air into the lungs.
bronchioles
tiny air passages smaller than 1 millimeter in diameter from bronchus, ending up with air sacs.
alveoli
air sacs in the lungs where gases exchanges take place.
intercostal muscle
the muscles found in between the ribs, responsible for inhalation and exhalation.
diaphragm
Large, dome-shaped muscle at the bottom of the chest cavity that helps with breathing.
pulmonary veins
Veins carry oxygenated blood from the lungs to the heart.
pulmonary arteries
Arteries carry deoxygenated blood from the heart to the lung.
deoxygenated blood
blood that is oxygen poor and has a lot of CO2 - dull red in colour.
oxygenated blood
blood that contains a lot of oxygen and is red in colour.
breathing
the taking in oxygen and removal of carbon dioxide by the respiratory system.
respiration
the oxidation of food to release energy inside the cell.
diffusion
the movement of gas from a high concentration to a lower concentration, eg. oxygen from air sac to the surrounding blood capillaries.
chest cavity
Second largest hollow space of the body, enclosed by the ribs, vertebral column , and breastbone and separated from the abdominal cavity.