When a Current Flows Through a Metal Wire, the Moving

question 425

Multiple Choice

When a current flows through a metal wire, the moving charges are

• A) only electrons.
• B) negative metal ions.
• C) positive metal ions.
• D) both protons and electrons.
• E) only protons.

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Definitions:

Neurosecretory Neurons

Specialized neurons that produce and release hormones into the blood, bridging the nervous system and endocrine system.

Posterior Pituitary

The rear portion of the pituitary gland, which releases hormones such as oxytocin and vasopressin into the bloodstream.

Sympathetic Nervous

Part of the autonomic nervous system that prepares the body for physical activity by accelerating the heart rate, constricting blood vessels, and raising blood pressure.

Releasing Hormones

Hormones secreted by the hypothalamus that trigger the release of other hormones from the anterior pituitary gland.