BIOL 226 EXAM 2 Objectives 1-8 Cardiovascular UPDATED ACTUAL
Questions and CORRECT Answers
What type of muscle is within the heart? cardiac muscle
lining of the chambers Endocardium
-very smooth
Why does the endocardium have to be smooth? if it's rough, this is when blood starts to clot
-disrupts blood flow
, Epicardium Lining that goes around the heart
(visceral Pericardium)
Myocaridum muscular middle layer
Atria the two upper chambers of the heart
Difference between atrium and atria Atrium is singular
Atria is plural
where does blood flow continuously? through the atrium into the ventricle
when the atrium fills, what happens to the ventricles? The blood from the atrium exits and fills the ventricle
ventricles the two lower chambers of the heart
how can you tell the difference between the left and the left side of the wall chamber is thicker than the right side
right side?
Why is the left and right walls of different thickness? The left ventricle has to eject blood to the entire body, whereas the right ventricle
just has to eject blood to the lungs
Which side of the heart is low in oxygen? right side
Which side of the heart is high in oxygen? left side
why is the left side high in oxygen compared to the right The left side receives oxygen from the lungs, has to have enough force to push
side? blood up to the top of your head and to your toes
what does an artery do? carries blood away from the heart
what does a vein do? carries blood to the heart
Septum Divides the right and left chambers of the heart
what is our main source of body heat? skeletal muscles
what do skeletal muscles require? oxygen
What happens if there is no interventricular septum? the high oxygen and lower oxygen mix
-blood oxygen levels are low and cannot generate ATP to generate body heat
what do valves do? -Goes one way
-controls direction
-controls when flow happens
Questions and CORRECT Answers
What type of muscle is within the heart? cardiac muscle
lining of the chambers Endocardium
-very smooth
Why does the endocardium have to be smooth? if it's rough, this is when blood starts to clot
-disrupts blood flow
, Epicardium Lining that goes around the heart
(visceral Pericardium)
Myocaridum muscular middle layer
Atria the two upper chambers of the heart
Difference between atrium and atria Atrium is singular
Atria is plural
where does blood flow continuously? through the atrium into the ventricle
when the atrium fills, what happens to the ventricles? The blood from the atrium exits and fills the ventricle
ventricles the two lower chambers of the heart
how can you tell the difference between the left and the left side of the wall chamber is thicker than the right side
right side?
Why is the left and right walls of different thickness? The left ventricle has to eject blood to the entire body, whereas the right ventricle
just has to eject blood to the lungs
Which side of the heart is low in oxygen? right side
Which side of the heart is high in oxygen? left side
why is the left side high in oxygen compared to the right The left side receives oxygen from the lungs, has to have enough force to push
side? blood up to the top of your head and to your toes
what does an artery do? carries blood away from the heart
what does a vein do? carries blood to the heart
Septum Divides the right and left chambers of the heart
what is our main source of body heat? skeletal muscles
what do skeletal muscles require? oxygen
What happens if there is no interventricular septum? the high oxygen and lower oxygen mix
-blood oxygen levels are low and cannot generate ATP to generate body heat
what do valves do? -Goes one way
-controls direction
-controls when flow happens
