How Does a Coronal Hole Compare with the Rest of the Solar

question 33

Multiple Choice

How does a coronal hole compare with the rest of the solar corona?

• A) cooler but brighter
• B) hotter and brighter
• C) cooler and darker
• D) hotter but darker

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Definitions:

Semilunar Valves

Heart valves located at the bases of the large arteries that leave the heart; they prevent blood from flowing back into the heart.

AV Valves

The atrioventricular valves, consisting of the tricuspid and mitral valves, regulate blood flow from the atria to the ventricles in the heart.

Left Ventricle

The chamber of the heart that receives oxygen-rich blood from the left atrium and pumps it out to the body through the aorta.

Ventricular Systole

Ventricular systole is the phase of the cardiac cycle during which the ventricles contract, pumping blood out of the heart and into the circulatory system.