Circulating and breathing Flashcards
difference between oxygenated and deoxygenated blood?
the colour
how do u work out maximum heart rate?
220- age
two places where pulse may be felt?
wrist and neck
define heart rate?
number of heart beats in a minute
what type of muscle is the heart?
cardiac
the heart is split into four chambers. what are the upper chambers called?
atrium
what does the heart do in the circulatory system?
pump blood
aerobic respiration equation?
Glucose+oxyden–> energy+water
list functions of the circulatory system?
carries oxygen removes carbon dioxide, carries hormones, maintained temperature prevents infection
cardiac output definition?
the amount of blood pumped by the heart minute
red blood cells
> carry oxygen to cells
removes carbon dioxide
gives blood its colour
white blood cells
> protect us from bacteria
platelets
> clot the blood to prevent germs and infection getting into the body
plasma
> gives blood it consistency
viens
> have thin walls
larger diameter than arteries
carry deoxygenated blood back to the heart
arteries
> thick walls
> carry oxygenated blood away from heart
where does gaseous exchange take place?
aveolis
capillaries
> microscopic blood vessels
> link vessels to arteries to the viens
define blood pressure
the force exerted by the blood against the vessel wall.
tidal volume
Tidal volume is the amount of air breathed in with each normal breath
Gaseous exchange
Gaseous exchange occurs at the alveoli in the lungs and takes place by diffusion. The alveoli are surrounded by capillaries so oxygen and carbon dioxide diffuse between the air in the alveoli and the blood in the capillaries.
residual volume
the. amount of air left in the. lungs after a maximal out. breath.
