Blood Vessels (Structure, Physiology & Dynamics) - Quiz #8 On Thurs. 8/26

The innermost layer of a blood vessel made up of a single layer of squamous endothelial cells is the __________  ___________.

 _____________ cells line the inner surface of the entire circulatory system.

The ___________  ____________ is the middle layer of a blood vessel and is composed of smooth muscle and a thin layer of elastic tissue.  It is controlled by the autonomic nervous system.

The smooth muscle middle layer of blood vessels is much thicker in...

The __________  ___________ or ___________ is the outer layer of blood vessels and is composed of connective tissue that functions to reinforce and support the vessel.

The thick muscular middle layer in _________ allows them to resist large ___________ generated from the hearts pumping action.

The thin muscular layer in __________ allows them to collapse and also hold more blood (approx 70-80%).

Movement of blood back to the heart is aid by what 3 factors?

Valves in veins are most commonly found in the ______________.

There are valves in the IVC, portal veins, and the pulmonary veins

Capillary walls are made up of only one layer, the __________  ___________.

The primary force by which gases are exchanged between the capillary walls and cells in the body is called _____________.

A secondary force that moves water and dissolved materials from the capillaries into the tissue fluid is the ___________ of blood.

A force that moves fluid into the capillaries is called __________  ___________.

An increase in the diameter of a blood vessel and therefore allowing more blood to an area is called ______________.

A decrease in diameter of a blood vessel, causing a decrease of blood flow is called __________________.

The blood flow into individual capillaries is regulated by smooth muscles that encircle the entrance to the capillary called a ______________  _______________.

Precapillary sphincters are only on the venous side of cells.