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by BlastRoom
How the three vessel types differ in structure and job, and how exchange happens at a capillary.
#us_hs_anatomy_physiology
25 questions
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Which vessel type has the thickest wall with abundant smooth muscle and elastic tissue for blood leaving the heart under high pressure?
A vessel has a wide lumen, a thinner wall, and valves that prevent backflow. Which vessel type is it?
Which vessel type has a wall only one cell thick so materials can move between blood and nearby tissues?
Blood in a vessel is pulsing strongly with each ventricular contraction. Which vessel type is most directly built for that pressure change?
Which vessel type most often needs skeletal muscle squeezing and one-way valves to keep blood moving toward the heart?
A vessel is narrow enough that erythrocytes often pass through single file. Which vessel type is it?
The pulmonary trunk carries oxygen-poor blood away from the heart toward the lungs. Based on its direction of flow, which vessel type is it?
A blood vessel contains most of the body's blood volume at rest and carries it under low pressure. Which vessel type is it?
Why does a thick elastic wall help a vessel carrying blood away from the heart?
Why is a one-cell-thick wall useful in the smallest exchange vessels?
Why do many low-pressure vessels in the limbs contain valves?
Why does having a wide lumen fit a vessel that returns blood to the heart at low pressure?
Why are networks of tiny exchange vessels spread through almost every tissue?
Why does smooth muscle in the middle wall layer matter for vessels carrying blood under high pressure?
At the arterial end of a capillary bed, outward blood pressure is greater than inward osmotic pull. What happens to fluid?
At the venous end of a capillary bed, inward osmotic pull from plasma proteins is greater than outward pressure. What happens to fluid?
If plasma protein concentration drops, inward osmotic pull in a capillary decreases. What happens to net fluid movement into tissues?
If blood pressure rises in a capillary, which change is most likely at its arterial end?
Near the venule end, outward pressure has fallen below the pull of plasma proteins. Which process is occurring?
When outward and inward pressures across a capillary wall are equal, what is the net movement of fluid?
Which wall layer is the smooth inner lining that blood directly touches?
Which wall layer contains most of the smooth muscle that changes vessel diameter?
Which wall layer is the outer connective tissue coat that anchors and protects a blood vessel?
In a large blood vessel, which layer lies between the inner lining and the outer connective tissue coat?
Which wall layer is made of endothelium and a thin basement membrane in vessels that have all three layers?
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Blood Pressure and How the Body Controls It
20 questions
