Chapter 18 Section 18.4-18.5

Water in the blood exerts pressure on the walls of capillaries, generating ________.

blood hydrostatic pressure

An excess amount of water in the interstitial fluid is known as ____.

edema

Small solutes can pass through small pores in some capillaries known as ____.

fenestrations

Blood pressure is equivalent to __________.

hydrostatic pressure

In which direction will water move when hydrostatic pressure exceeds colloid osmotic pressure at the arteriolar end of a capillary?

water is pushed out of the capillary by filtration

Which pressure remains the same along the length of a capillary?

Colloid osmotic pressure

Under what conditions will the myogenic mechanism slow blood flow into a capillary bed?

Rising arteriolar pressure

What type of capillaries have large pores within their endothelial cells and are the leakiest?

Sinusoidal capillaries

Tissue perfusion is largely controlled by ______ to ensure that blood flow meets the cells' needs.

autoregulation

The most important force driving reabsorption at the venous end of a capillary is _____.

blood colloid osmotic pressure

Net filtration pressure (NFP) is equal to the:

net hydrostatic pressure minus the net colloid osmotic pressure.

The main local autoregulatory mechanism of cardiac muscle tissue is ____.

oxygen

Blood flow through the capillary bed is regulated by ______.

precapillary sphincters

What is edema?

swelling

Tissue perfusion in the heart decreases during ventricular ____ and increases during ventricular ____.

systole; diastole

Large, lipid-insoluble molecules cross capillary walls by ___.

transcytosis