Which gland is responsible for releasing hormones that activate the sympathetic nervous system?

• A. Adrenal.
• B. Hypothalamus.
• C. Thyroid.
• D. Pancreas.

Answer: (A)

Verified step by step guidance

1. Understand the role of the sympathetic nervous system: It is part of the autonomic nervous system responsible for the body's 'fight or flight' response.
2. Identify the glands listed: Adrenal, Hypothalamus, Thyroid, and Pancreas, and understand their primary functions.
3. Recognize that the adrenal glands are located on top of the kidneys and are responsible for releasing adrenaline (epinephrine) and noradrenaline (norepinephrine), which are crucial for activating the sympathetic nervous system.
4. Consider the role of the hypothalamus: It is a brain region that regulates many bodily functions, including the release of hormones from the pituitary gland, but it does not directly release hormones that activate the sympathetic nervous system.
5. Conclude that the adrenal glands are the correct answer, as they directly release hormones that activate the sympathetic nervous system during stress responses.