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Diffusion, Bulk flow, Transcytosis or vesicular transport.

How do materials move between capillaries and interstitial fluid?

Due to the pancreatic hormone insuling and glucagon

How does the lover regulate blood sugar?

inner single squamous layer Continuous w/ endocardium Smooth, facilitates flow

What is the tunica intima and what does it contain?

veins

What needs larger lumens, veins or arteries?

Tunica Intima

What single layer does the capillaries contain?

The Placenta

What allows for the exchange of nutrients, gases, and wastes fetal and maternal tissue?

Pulmonary circulation moves blood between the heart and the lungs. It transports deoxygenated blood to the lungs to absorb oxygen and release carbon dioxide. The oxygenated blood then flows back to the heart. Systemic circulation moves blood between the heart and the rest of the body.

What are some difference between pulmonary and systemic circulation?

Umbilical arteries

What carries CO2 -rich, nutrient-poor blood from the fetus to the placenta?

Arteries

What has higher pressure, veins or arteries?

Arteries

What has thicker walls, veins or arteries?

Veins

What has valves, veins or arteries?

Venous blood from the digestive tract

What is sent to the liver via the hepatic portal vein for processing

middle layer; smooth muscle & elastin fibers The muscle under sympathetic control to regulate the diameter

What is the Tunica Media and what does it contain?

outer layer of fibrous connective tissue Mostly protective Larger vessels w/ vasa vasorum

What is the tunica externa and what does it contain?

Umbilical Vein

delivers oxygenated blood from the placenta to the fetus