anp2

The cardiovascular centers in the medulla oblongata control __________.
- heart rate
- peripheral resistance
- cardiac contractility
precapillary sphincters

consist of smooth muscle cells that encircle the beginning of each capillary
The layer of a blood vessel that is dominated by smooth muscle cells is called the __________.

tunica media
Arterial blood flow rises and falls during the cardiac cycle because

arterial pressure rises and falls
Elevated capillary hydrostatic pressure

forces more fluid across the endothelium
Since blood flows from high pressure to low pressure
- a continuous drop in pressure is necessary to keep the blood moving
- Blood pressure continuously drops as blood flows through the systemic circulation
tunica media of an artery consists of

smooth muscle with scattered elastic fibers

Author

Anonymous

173509

Card Set

anp2

Description

notes

Updated

2012-09-26T05:23:21Z

Show Answers