A Star's Surface Temperature During the Horizontal Branch Phase Is

question 3

Multiple Choice

A star's surface temperature during the horizontal branch phase is determined primarily by its

• A) luminosity.
• B) mass and chemical composition.
• C) magnetic field strength.
• D) rotation rate.
• E) radius.

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Definitions:

Reciprocal Innervation

A neural mechanism that allows for the simultaneous contraction of one muscle and the relaxation of its antagonist.

Antagonistic Muscles

Antagonistic muscles are pairs of muscles that work against each other to move a joint, with one muscle contracting while the other relaxes.

Golgi Tendon Reflex

A protective reflex that prevents muscle damage during excessive force generation by causing muscle relaxation.

Brachial Plexus

A network of nerves that originates from the spinal cord in the neck and supplies the arms and hands with sensory and motor function.