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precapillary sphincters

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Q: The structures composed of smooth muscle that direct the flow through capillary bed are called?
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How do liquids travel through plants?

By a process called "capillary" action.


The sequence of structures that urea passes through in the nephron is?

A nephron is composed of the Bowman's capsule, the proximal tubule, the loop of the nephron (called the loop of Henle), the distal tubule, and the collecting duct.


The process by which neutrophils are squeezed through the capillary walls during the inflammatory process is called?

diapedesis


The stack of sac-like membranous structures located inside the chloroplast are called?

Sacs are called thylakoids.Stacks are called grana.


When white blood cells leave the capillaries what is this process called?

they squeeze through capillary walls in a process called diapedesis


Blood leaves the capillary thorugh a tube called a?

Blood leaves a capillary through a venule, a small vein. At that point, the blood is making its journey back towards the heart.


What general type of blood vessel that transports blood from one capillary to another capillary?

From the heart the blood moves through the Artirioles, through the systemic capillaries, through the precapillary sphincters to the Venules, and back to the heart. Otherwise they are generally just called capillaries


Nutrient molecules pass from the small intestine into the bloodstream through tiny structures called what?

Nutrient molecules pass from the small intestine into the through tiny structures called villi.


What is it called when a white blood cell squeezes through a blood vessel to attack infections?

The movement of the WBC through a capillary is called diapedesis. In very general terms it is also called extravasation


When leukocytes squeezes through capillary walls to enter tissue space outside the blood vessel it is called?

Diapedesis


What is a very small artery that delivers blood to the capillaries?

The blood vessel that only allows one corpuscle to go through at a time is called a capillary.


A song structure that is composed from beginning to end without repetition of whole sections is called?

through-composed