Stars at the Lower End of the Main Sequence Have

question 31

Multiple Choice

Stars at the lower end of the main sequence have

• A) high temperatures and large masses.
• B) high temperatures and small masses.
• C) low temperatures and large masses.
• D) low temperatures and small masses.

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Definitions:

Stroke Volume

The amount of blood ejected by the left ventricle of the heart in one contraction.

Lymphatic System

A subsystem of the cardiovascular system; returns excess interstitial fluid (lymph) to the circulation; defends the body against disease organisms.

Interstitial Fluid

The fluid that surrounds the cells in tissues and is exchanged with the blood, providing nutrients and removing waste materials.

Pacemaker

A device implanted in the chest to regulate the heartbeat.