Neurotransmitters

question 235

Multiple Choice

Neurotransmitters:

• A) are chemical messengers that are secreted into the bloodstream primarily by endocrine glands.
• B) are present in extremely small quantities in the brain.
• C) are constantly changing their basic molecular shape as the human brain adapts to new experiences.
• D) compete with sodium and potassium ions for the receptor sites on the surrounding neurons.

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Definitions:

Stethoscope

A medical instrument used to listen to sounds within the body, such as the heartbeat or respiratory sounds, aiding in diagnosis.

PMI

Point of maximal impulse; the location on the chest wall where the heart's impulse can be most strongly felt.

Midclavicular Line

An imaginary line on the body extending from the midpoint of the clavicle vertically down the torso.

Jugular Vein

A large vein in the neck that carries blood from the head to the heart.