Biology Forums - Study Force

1) for each of the parts of the heart given, use the number 1 indicating blood in the area is oxygenated or a 2 indicating that the blood is deoxygenated.
-pulmonary artery, - right ventricle, - left atrium, - pulmonary veins

2) There are certain valves in the heart that help direct blood flow from the
a) left ventricle to the body
b) right atrium to the lungs
c) left atrium to the lungs
d) right ventricle to the body

3) The pathway in which tropical steroids can  be first absorbed into the persons bloodstream by
a) an arteriole
b) a vein   <-- I think its b?
c) a capillary
d) an artery

4) How many valves are found in the heart and where are the located: what is their purpose
ok so looking at a pic diagram I see 4 valves in total: 1 between the right atrium and right ventricle~ artrioventicular valve. 2nd valve ~ semilunar valve seperates the right ventricle and pulmonary artery.3 artioventricular valve seperates left atrium and left ventricle finally #4) is another semilunar valve ** if im missing anything please let me know.

5) the first and second heart sounds (Lub-DUB) are
a) the closing of the valves between the atriums and ventricles
b) the closing of the valves between the ventricles and the vessels
c) the closing of valves
d) the opening of valves

 

1.
pulmonary artery - 2
right ventricle - 2
left atrium - 1
pulmonary veins - 1

2. a) right ventricle to the body
b is incorrect because the right atrium goes to the right ventricle, not the lungs
c is incorrect because the left atrium goes to the left ventricle, not the lungs
d is incorrect because the right ventricle goes to the pulmonary trunk (eventually lungs), not the body

3. not sure

4) 4 valves
AV valves -
   left/bicuspid/mitral - directs blood from from left atria to left ventricle
   right/tricuspid - directs blood from right atria to right ventricle
SL valves -
   right/pulmonary - directs blood from the right ventricle to the pulmonary trunk (aka to lungs)
   left/aortic - directs blood from the left ventricle to the aorta (then to the rest of the body)

Post Merge: 8 years ago

Whoops sorry forgot to answer 5.

5. c
lubb (a) = closing of the valves between the atria and ventricle
dupp (b) = closing of the valves between the ventricles and the vessels

I guess c would be correct, but those two answers are the individual causes for each sound

Marking the topic solved.

Thanks, melissaann112

You guys are awesome