Question

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Explanation:

Define endocrine glands

Endocrine glands secrete hormones directly into the bloodstream to regulate bodily functions.

Analyze the options

• A. Pharynx: A muscular tube that connects the nasal cavity and mouth to the esophagus and larynx. It is part of the respiratory and digestive systems, not an endocrine gland.
• B. Pituitary: A major endocrine gland located at the base of the brain. It secretes hormones that control growth, blood pressure, and other glands.
• C. Alveoli: Tiny air sacs in the lungs where gas exchange occurs. They belong to the respiratory system, not the endocrine system.
• D. Thyroid: A butterfly-shaped endocrine gland in the neck. It secretes hormones that regulate metabolism, growth, and development.

Identify the correct choices

Both the pituitary gland and the thyroid gland are endocrine glands. Since the question asks "Which of these are endocrine glands?" and features checkbox options, both correct options should be selected.

Answer:

• (A) Pharynx
• (B) Pituitary (Correct answer)
• (C) Alveoli
• (D) Thyroid (Correct answer)