The Disk of the Milky Way Is Approximately 20,000 Ly

question 45

True/False

The disk of the Milky Way is approximately 20,000 ly in diameter.

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Definitions:

Vasomotor Tone

Relatively constant frequency of sympathetic impulses that keep blood vessels partially constricted in the periphery.

Blood Colloid Osmotic Pressure

The pull exerted by large proteins in the plasma portion of blood that tends to draw water into the circulatory system.

Interstitial Fluid

The fluid that surrounds the cells in tissues, providing a medium for the exchange of substances between blood and cells.

Venous End

The part of a capillary bed where blood is collected from the capillary networks into the veins, characterized by lower pressure and oxygen content compared to the arterial end.