Hypothalamus initiates the release of hormones, by their releasing factors, while _ is directly released by it.
Correct answer: B. Oxytocin
- A. TSH
- B. Oxytocin
- C. ACTH
- D. FSH
- E. GH
Explanation
Option A: TSH (thyroid-stimulating hormone) is released by the anterior pituitary gland in response to a releasing factor called thyrotropin-releasing hormone (TRH) from the hypothalamus. Option B: Oxytocin is released directly by the hypothalamus into the bloodstream. It is involved in childbirth, breastfeeding, and social bonding. Option C: ACTH (adrenocorticotropic hormone) is released by the anterior pituitary gland in response to a releasing factor called corticotropin-releasing hormone (CRH) from the hypothalamus. ACTH stimulates the release of cortisol from the adrenal glands. Option D: FSH (follicle-stimulating hormone) and LH (luteinizing hormone) are released by the anterior pituitary gland in response to releasing factors called follicle-stimulating hormone-releasing hormone (FSHRH) and luteinizing hormone-releasing hormone (LHRH) from the hypothalamus. FSH and LH are involved in the regulation of reproduction. Option E: GH (growth hormone) is released by the anterior pituitary gland in response to a releasing factor called growth hormone-releasing hormone (GHRH) from the hypothalamus. GHRH stimulates the release of GH, which is involved in growth and development.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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