________ is released in response to a decrease in blood volume.
In a process called autoregulation, ________ in response to a decline in dissolved oxygen levels within a tissue.
A)blood flow to the area decreases
B)the precapillary sphincters relax
C)vasomotion is not a factor
D)the diameter of the supplying capillaries' entrance narrows
E)the volume of blood arriving at the venules decreases
When blood flow in a capillary bed decreases in response to locally high oxygen levels, it is caused by
Which of the following monitors blood pressure at the end of the systemic circuit?
B)carotid sinus baroreceptors
C)aortic body chemoreceptors
D)carotid body chemoreceptors