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The best definition of heart preload is:

Which of the following patients will likely have a lower stroke volume:

Dehydration (lower water level in blood) can lead to a lower preload.

Which type of artery would best be suited to perform vasoconstriction and vasodilation, which helps to distribute blood flow?  

Baroreceptor releaxes may be triggered by receptors found in the wall of which of the following blood vessels?

Which organ detects hypoxia and releases a hormone that stimulates the red bone marrow to produce red blood cells?

The raised bundles of muscle found in the wall of the ventricles are called the _____________.

To assist with venous return, muscles of the lower extremity contract which pushes blood proximally up through valves into large veins near the heart.  This mechanism is called the:  

Which of the following are prokaryotes?

Which type of blood would a person have if they have: A antigens on their RBCs anti-B-antibodies in their plasma Rh antigens on their RBC no Rh antibodies in their plasma