biology 2

?
describe the left side of the heart
the left atrium relaxes, oxyegnated blood flows from the pulmanary vein, the pressure causes the bicuspid valves to open, the atrium conatrcts and blood flows into the lefft ventrcles, the biscuspid valves close to reduce flow back
1 of 11
describe the left side of the heart when left v contracts
the lefct v contracts and the blood flows to the aorta and the semi lunar valves open and blood is forces aroudn body
2 of 11
pressure in heart
hightest pressure is found in atrium and aorta due to rise and fall in ventricular contractions, the atrium has samller luman than aorta so high pressure, low pressure in bverins returning to the heart
3 of 11
decribe the heart myuslce
the heart muslce is myogenic and the ehart beat is found wothin the heart
4 of 11
control in the heart
the right atrium contains sino-atrial node which acts as a pace maker, a wave of impluses are sent over atrium and causes them to contract the impluses are sent to the atrioventricular node and the impulses are passed to the ventricle,
5 of 11
what hapens to the impulses after the venrtilce
the impluses are sent to the bundle of his, the bundle branches into purkinje fibre, the impluses cause the ventricles to contract simletaniously
6 of 11
functions in the blood
plasma transports co2, red blood cells transport oxyegn, white blood cells (granulcites) engluf bacteria. angrangulocites produce anti toxins
7 of 11
what is pp02
there is a high concentration of dissolved oxyegn the higher the pp02
8 of 11
how do red blood cells carry oxygen
the red blood cells load the oxygen so has high pp02, haemolglobin is aturated in oxyhen, oxyhaemoglobin is transported to cells with less pp02 and oygen is dissociated
9 of 11
describe a dissociatioon curve
respirtitory pigmant heamolglobin has a high effinity pf oxygen curve shifts to right less oxygen curve sidfts to left more oxgenyn
10 of 11
dissociation curve for lungs
ppo2 is high as haemoglobin is staurated in oxyhen, tissues have low ppo2 and the oxygen is dssociated drom heamoglobin
11 of 11

Other cards in this set

Card 2

Front

describe the left side of the heart when left v contracts

Back

the lefct v contracts and the blood flows to the aorta and the semi lunar valves open and blood is forces aroudn body

Card 3

Front

pressure in heart

Back

Preview of the front of card 3

Card 4

Front

decribe the heart myuslce

Back

Preview of the front of card 4

Card 5

Front

control in the heart

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Biology resources:

Biology
Biology
Biology
See all Biology resources »See all heart resources »