Ch. 19 Module 2: Section 19.03-19.05 Dynamic Study Module

Identify the vessel of the cerebral arterial circle (of Willis) indicated by "B."

Anterior cerebral artery

Identify the vessel of the cerebral arterial circle (of Willis) indicated by "A.

Anterior communicating artery

Which of the following blood vessels do not contain intercellular clefts?

Arterioles

Match the following type of vessel with its structure: Veins.

Contain valves to assist blood flow back toward heart

Identify the part of a special (mesenteric) capillary bed indicated by "B."

Metarteriole

Identify the part of a special (mesenteric) capillary bed indicated by "E."

Postcapillary venule

Identify the vessel of the cerebral arterial circle (of Willis) indicated by "D."

Posterior cerebral artery

Identify the vessel of the cerebral arterial circle (of Willis) indicated by "C."

Posterior communicating artery

Identify the part of a special (mesenteric) capillary bed indicated by "C."

Precapillary sphincters

Which of the following conditions would not increase the chances of developing varicose veins?

Running in place

Match the following type of vessel with its structure: Capillaries.

Smallest blood vessels with thin walls that allow exchange between blood and tissue cells

Match the following type of vessel with its structure: Venules.

Smallest vessels leading away from capillaries

Identify the part of a capillary bed indicated by "A."

Terminal arteriole

Which of the following regulates blood flow through most capillary beds?

Terminal arterioles

Identify the part of the special (mesenteric) capillary bed indicated by "D."

Thoroughfare channel

The only vessels that provide direct access to nearly every cell in the body are the __________.

capillaries

Exchange of gases and nutrients occurs by diffusion between the __________.

capillaries and tissue cells

The vessels that exhibit the lowest level of permeability are the __________.

continuous capillaries

The minute-to-minute blood flow through the capillary beds is determined by the __________.

diameter of arterioles

Fluids would be likely to leave or filter out of the capillary if __________.

net hydrostatic pressure (HP) is greater than net osmotic pressure (OP)

The presence of __________ stabilizes the wall of capillaries.

pericytes

Up to 65% of the body's blood supply is found in __________.

veins