An organ that produces and releases chemicals.

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Multiple Choice

An organ that produces and releases chemicals.

Explanation:
Secretory function is the key idea here: a gland is a specialized organ that makes substances and releases them where they’re needed. Glands produce chemicals such as hormones, enzymes, sweat, or mucus and pass them out through ducts or into the bloodstream, depending on the gland type. An organ is a broader term for a body part made of multiple tissues, not specifically defined by secretion. A tissue is a group of similar cells, not an organ. A hormone is the chemical product itself, not the organ that makes and releases it. So the best fit is gland.

Secretory function is the key idea here: a gland is a specialized organ that makes substances and releases them where they’re needed. Glands produce chemicals such as hormones, enzymes, sweat, or mucus and pass them out through ducts or into the bloodstream, depending on the gland type. An organ is a broader term for a body part made of multiple tissues, not specifically defined by secretion. A tissue is a group of similar cells, not an organ. A hormone is the chemical product itself, not the organ that makes and releases it. So the best fit is gland.

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