______ shock results from a loss of sympathetic stimulation. (H21)

The body responds to fear or threat by widespread …(H15)

Cardiac output is the product of  _____. (H10)

Nicotine causes ____ of vessels in the skin (H15)

The hepatic portal vein carries blood from the intestines to the liver. (A4)

All arteries carry oxygenated blood. (A4)

Local tissue hypoxia (low oxygen) triggers …(H15)   

The _____ are points of attachment between muscle fibers that allows the cardiac impulse to move from cell to cell. (H1)

___ is measured in distance traveled per time units. (H5)

The highest arterial pressure occurs during ______.(H4)