Arrange the following into the order by whitch blood flowing through the cardiac cycle encounters them: plumen

Question

plumonary vein, aorta, superior vena cava,right atrium, left atrium,right ventricle,leftventricle.

q2) a penguin's body is well protected from the cold by thick dowm and blubber, but its feet have no insulation.expalin how it is possible how that penguin doesn't lose heat through its feet.

q3)one form oflie detector measures changes in skin temp. if skin temp suddenly increases as the subject responds to a Q,the machine indicated that the subj is lying. what is the theory behind this technology ? how could u foil the machine if u were the subj?

please i'm really stuch here...help please

Answer 1

Q1) superior vena cava -> right atrium -> right ventricle -> pulmonary artery -> lung capillaries -> pulmonary vein -> left atrium -> left ventricle -> aorta (i had to add a few to connect all the terms you provided)

Q2) i am not positive about this, but i would imagine that there is a countercurrent heat exchange system in the penguins' feet, where heat from arterial blood is tranferred to  venous blood

Q3) most people get nervous when they lie, stimulation of their sympathetic nervous system causes their heart rate to increase and this causes their body temperature (and therefore skin temperature) to increase as well.  i guess you could fool the machine if you practiced lying a lot and didn't affect you.