In Ptolemy S View of the Universe, a Planet Moves

question 44

Multiple Choice

In Ptolemy s view of the universe, a planet moves on an epicycle whose center moves around the Earth on the deferent circle.

• A) Correct
• B) FALSE; Ptolemy put the Sun at the center.
• C) FALSE; The planet stays on the deferent circle.
• D) FALSE; The Earth is at the center of the epicycle.
• E) FALSE; Both c and d are correct.

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Definitions:

Hepatocytes

Hepatocytes are the main functional cells of the liver, responsible for detoxification, protein synthesis, and production of biochemicals necessary for digestion.

Hemocytoblasts

Stem cells in the bone marrow that can differentiate into various types of blood cells.

Negative Feedback

An adjustment process in which an initiating signal triggers a response that counterbalances the original effect, ensuring stability of the regulated substance.

Blood Vessels

Hollow channels facilitating blood flow throughout the body, which include arteries, veins, and capillaries.