Respiration and Circulation
Completion requirements
Pori drwy'r eirfa gan ddefnyddio'r mynegai hwn
Arbennig | A | B | C | CH | D | DD | E | F | FF | G | NG | H | I | L | LL | M | N | O | P | PH | R | RH | S | T | TH | U | W | Y | Y CYFAN
A
AlveoliTiny air sacs in the lungs where oxygen and carbon dioxide are exchanged. | |
AntibodyA protein produced by certain white blood cells that helps destroy pathogens. | |
AortaThe largest artery in the body, carrying oxygen-rich blood from the left ventricle to the body. | |
ArteryA blood vessel that carries blood away from the heart. | |
B
BloodA specialised connective tissue that transports substances throughout the body. | |
Blood pressureThe force exerted by blood against the walls of arteries. | |
BronchiThe two main air passages that carry air from the trachea into the lungs. | |
BronchiolesSmaller branches of the bronchi that lead to the alveoli. | |
C
CapillaryA tiny blood vessel with walls only one cell thick. | |
Carbon dioxideA waste gas produced during cellular respiration. | |