The Meridian Is Defined as an Imaginary Circle on the Sky

question 50

Multiple Choice

The meridian is defined as an imaginary circle on the sky on which lie the:

• A) celestial equator and vernal equinox
• B) north and south celestial poles
• C) zenith and the north and south celestial poles
• D) zenith and east and west directions
• E) celestial equator and summer solstice

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Definitions:

Vertebral Arteries

Arteries that supply blood to the upper spinal cord, brainstem, and the posterior portion of the brain.

Thyrocervical Arteries

A group of arteries that arise from the thyrocervical trunk and supply blood to the thyroid gland and surrounding areas.

Common Carotid

A major artery that supplies blood to the head and neck.

Femoral Artery

A major blood vessel in the thigh that supplies oxygenated blood to the lower portion of the body.