circulatory system Q2

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Questions and Answers

what sensory structures in arteries?

carotid sinus>baroreceptor carotid body>chemoreceptor

what is the thickest layer in veins?

tunica externa

relate the structure of vein to its function?

thinner wall and larger lumens to allow more blood to flow (hold more blood 70-80%) with less vessel resistance without increasing bp. valves (s in limbs) to allow unidirectional blood flow to the heart,

what we call the blood flow through capillaries?

<p>microcirculation.</p> Signup and view all the answers

capillaries made up of?

<ul> <li> <p>tunica intima (single endothelial layer + basement membrane)</p> </li> <li> <p>pericytes-embedded in the basement membrane (normal microcirculation).</p> </li> </ul> Signup and view all the answers

what type of capillaries is found in liver, bone marrow, and spleen?

<p>discontinuous capillary.</p> Signup and view all the answers

where do we generally find continuous capillaries?

<p>fat muscle nervous system</p> Signup and view all the answers

where do we find fenestrated capillaries?

<p>intestinal villi endocrine glands kidney glomeruli</p> Signup and view all the answers

what type of capillaries found in endocrine glands?

<p>fenestrated capillaries.</p> Signup and view all the answers

what type of capillaries found in skin?

<p>continuous (most common one)</p> Signup and view all the answers

Flashcards

Carotid Sinus

A specialized region in the carotid artery that contains baroreceptors.

Carotid Body

A structure in the carotid artery containing chemoreceptors.

Baroreceptor

Sensory receptor that responds to changes in blood pressure.

Chemoreceptor

Sensory receptor sensitive to changes in chemicals in the blood (like oxygen and carbon dioxide).

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Artery Sensory Structures

Specialized structures in arteries that detect changes in blood pressure and blood composition.

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