Epithelium (epi- + thele + -ium) is one of the four basic types of animal tissue. The
other three types are connective tissue, muscle tissue and nervous tissue.
Epithelial tissues line the cavities ...
Because of the high pressure exerted on arteries they have thick walls of ...
Capillaries are the smallest blood vessels and their walls are only one cell thick ...
The cardiovascular system includes the heart (cardio) and blood vessels (
vascular). ... Thick walls enable arteries to withstand the pressure created by the
pumping of the ... Arteries consist of an inner lining, one cell thick, called
endothelium, ... (tissue flaps) that permit blood to flow in only one direction, back
to the heart.
Jun 20, 2004 ... Structure and Function of Blood Vessels in detail ... Very thin, permeable walls,
only one cell thick to allow exchange of materials ... of materials takes place in
the arteries and veins, whose walls are too thick and impermeable.
Capillaries are the smallest blood vessels in the body. They allow water, oxygen,
... The capillary walls are also very small, only one cell thick. These thin walls ...
Each capillary is a tiny blood vessel whose walls are only one cell thick, which
enables the exchange of oxygen, carbon dioxide, water, and salts between the ...
The circulatory system pumps and directs blood cells and substances carried .....
to cells in those tunics in larger vessels because the wall is too thick to be .... The
smallest arteries branch as arterioles, which have only one or two .... These
smallest blood vessels always function in networks called capillary beds, whose
Distinguish the different blood vessels at the light and electron microscope levels,
taking note of the diameter of the vessel lumen in relation to vessel wall thickness
; Describe ... an internal elastic lamina and one or two layers of smooth muscle
cells. ... Capillaries are vessels of small diameter (4 to 10 microns) whose wall is
Capillaries are thin-walled blood vessels in which gas exchange occurs. In the
capillary, the wall is only one cell layer thick. ..... The esophagus is a muscular
tube whose muscular contractions (peristalsis) propel food to the stomach.
The capillaries have a much smaller diameter than the other blood vessels of the
... whose thin walls facilitate the exchange of materials between the blood and ...
a soft-drink straw, simple tubes with walls only one cell thick (see figure 23.3b).