ch 13

what are the major types of blood vessels

where do all the exchange happen in the vascular system

what are the 3 layers of of the arteriestunic

this is the innermost layer
contacts blood
surrounds lumen
made of one layer simple squamous(flat) epithelium (thinnest type of tissue)
attach to basement membrane

space inside blood vessels where blood flows in

what does SLUDD mean

This is the thickest layer made of smooth muscles- controls the diameter of carter blood vessels- contacts in response to strech
vasoconstriction-constricts blood vessels
has elastic connective tissue and have nerve supplies supply to it.

this is the outer layer made of protein fibrous connective tissue. mostly collagen and elastic tissue. very thick helps keep blood vessel from rupturing

these are small arteries
vasoconstriction/vasodilation to control blood flow to tissues

carry blood from the heart to capillaries

smaller arteries

simple squamous epithelium

stimulates contraction of this smooth muscle

carry blood from capillaries back to the heart

smaller veins

is a connection, or joining, of vessel, that is artery to artery or vein to vein. The general pupose of these connections is to provide alternate pathways for the flow of blood if one vessel becomes obstructed

what helps ensure that blood will be albe to return to the heart in order to be pumped again

what are most numerous among the veins of the legs, where the possibilyt of obstuction increases as a person gets older

carries blood from arterioles to venules. wall is one cell thick. are actually the extension of the endothelium.

When blood flow into capillary networks is regulated by smooth muscle cells called

another type of capillary that are larger and more permeable than are other capillaries. allows large substances such as proteins and blood cells to enter or leave blood

the movement of gas from an area of greater concentration to an area of lesser concentration is called

Because the capillary blood pressure is higher, what process occurs that forces plasma and dissovled utients out of the capillaries and into tissue fluid

Albumin contributes to this attracting pressure a pulling rather than a pushing pressure is called

what are the two major pathways of circulation

this is a subdivision of systemic circulation in which blood from the abdominal digestive organs and speen circulates through the liver before returning to the heart.

these are branches of the fetal internal iliac arteries that carry blood form the fetus to the placenta

this carries oxygenated blood from the placenta to the fetus

within the body of the fetus, the umbilical vein branches: one branch takes some blood to the fetal liver, but most of the blood passes through...what to the inferior vena cava