The Saros Cycle

question 150

Multiple Choice

The Saros cycle

• A) was used in ancient times to predict eclipses.
• B) is 18 years, 11 days long.
• C) accounts for the tides seen on Earth.
• D) was used in ancient times to predict eclipses and is 18 years and 11 days long,
• E) None of the other choices are correct.

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Definitions:

Arteriovenous Anastomosis

Vessel through which blood is shunted from an arteriole to a venule without passing through the capillaries.

Arteriole

A small artery that leads into capillaries, controlling blood flow and pressure by the contraction and relaxation of its muscular wall.

Venule

Small blood vessels that allow deoxygenated blood to return from capillary beds to larger blood vessels called veins.

Arteries

Blood vessels that carry oxygen-rich blood away from the heart to the body.