describe how a mammalian heart is adapted to its function

Answer 1

It has septum which prevents oxygenated blood from mixing with deoxygenated blood

Answer 2

Has valves to prevent back flow of blood 

Answer 3

Has tendons which hold valves in place and prevent inversion of valves

Answer 4

Has a layer of fat which acts as a shock absorber.                                                        _Has semilunar valves which prevents back flow of blood into the ventricles when the ventricles contracts 

Answer 5

-The heart has a pericardium membrane which is translucent that encloses the heart .
-It secretes a pericardial fluid which lubricates the heart .
-It has a fatlayer which acts as a shock absorber
-It has a coronary artery that supply oxygen likewise it has a coronary vein to carry away CO2 and other waste materials
-It has a thick mascular wall know as the septumthat prevents oxygenated blood from mixing with deoxygenated blood 
-It has a thick ventricle that generates pressure to pump blood to all parts of the body
-It has cap like structures known as valves which prevent the back flow of blood and has tendons which prevent them from turning inside out
-the heart has a special muscle known as the cardiac muscle which functions without fatigue
-the heart is myogenic meaning it does not function under nervous stimulation
-the heart heart has a pacemaker or sinoatrial node which initiates heartbeat
-It has a vagus nerve which slows down heart beat similarly it has a sympathetic nerve which speeds up heart beat.

Answer 6

-The heart has a pericardium membrane which is translucent that encloses the heart .
-It secretes a pericardial fluid which lubricates the heart .
-It has a fatlayer which acts as a shock absorber
-It has a coronary artery that supply oxygen likewise it has a coronary vein to carry away CO2 and other waste materials
-It has a thick mascular wall know as the septumthat prevents oxygenated blood from mixing with deoxygenated blood 
-It has a thick ventricle that generates pressure to pump blood to all parts of the body
-It has cap like structures known as valves which prevent the back flow of blood and has tendons which prevent them from turning inside out
-the heart has a special muscle known as the cardiac muscle which functions without fatigue
-the heart is myogenic meaning it does not function under nervous stimulation
-the heart heart has a pacemaker or sinoatrial node which initiates heartbeat
-It has a vagus nerve which slows down heart beat similarly it has a sympathetic nerve which speeds up heart beat.

Answer 7

Muscular to pump blood over long distances.
Has 4 chambers which are hollow to accommodate more blood.
Has Coronary artery and vein to supply the heart with O2 and nutrients; remove waste products.
Has a fibrous layer of pericardium to prevent over dilation and keep the heart in position.