the heart

Question 1

features of atria

Answer 1

-thinner muscular walls
-dont contract as only pumping blood to ventricles
-elastic in walls to strech when blood enters

Question 2

features of ventricles

Answer 2

-thicker walls to enable contraction
-due to pushing blood at high pressure as moving long distance

Question 3

features of right ventricles

Answer 3

• thnner muscle to the left, this is due to, pumping blood at lower pressuer to lungs
  to prevent capillary damage
  blood fills slowly to allow gas exchange

Question 4

features of left ventricle

Answer 4

-pumps blood to body at high pressure, to be able to reach body cells
-thicker muscular walls
-for large contractions at high pressure

Question 5

veind]s bringing blood into heart

Answer 5

vena cava, pulmonary vein

Question 6

where are semi lunr valves found?

Answer 6

aorta and pulmonary artery

Question 7

where are atrioventricular valves found?

Answer 7

atria and ventricles

Question 8

what does biscuspid mean?

Answer 8

left side

Question 9

triscuspid

Answer 9

right side

Question 10

how do atrioventricular valves prevent backflow?

Answer 10

-valves open when high pressure in atria compared to ventricles
-valves close when there is high pressure in ventricles compared to atria