Explain the difference between vasoconstriction and vasodilation
What will be an ideal response?
Vasoconstriction is the term applied to the narrowing of a blood vessel, especially arteries and arterioles. In contrast, the term vasodilation refers to enlargement in the circumference and radius of a vessel as a result of its smooth muscle layer relaxing. Vasodilation leads to decreased resistance and increased flow through that vessel.
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The popliteal artery supplies the
A. hip joint. B. palmar region. C. knee joint. D. ankle joint. E. elbow joint.
The subarachnoid space within the meninges contains cerebrospinal fluid.
Answer the following statement true (T) or false (F)
Connie recently celebrated her 45th birthday. She feels okay most of the day, but in the
morning, for about a half hour after she gets out of bed, all of her joints feel stiff. This is due to A) torn ligaments. B) changes in collagen structure. C) nerve damage. D) sprains.
The body's response to sudden hypotension may include
A. constriction of veins and arterioles. B. decreased heart rate. C. dilation of arterioles. D. renal excretion of water.