Hypothalamus
Arginine vasopression, or antidiuretic hormone (ADH) is made in the hypothalamus and then stored and released from the posterior pituitary.
What our notes say
- Arginine vasopression, or antidiuretic hormone (ADH) is made in the hypothalamus and then stored and released from the posterior pituitary. (Chemical pathology and Endocrine pathology — Past Paper Questions & Answers)
- The thyroid gland produces T3 (active) and T4 (prohormone), regulated by TSH from the pituitary, which is in turn regulated by TRH from the hypothalamus. (ENDOCRINE PATHOLOGY)
- Limbic system (amygdala, hippocampus, hypothalamus, cingulate) generates and tags emotional meaning; prefrontal cortex plans, inhibits and decides. (Are Human Beings Thinkers with Emotions, or Emotional Thinkers?)
- Nerve pathway: impulses travel up the spinal cord to the hypothalamus. (Paediatrics main exam (MBPE 4300): 24 January 2022, Paper One, 100 MCQs, 2 short)
- Hormone release: the hypothalamus signals the posterior pituitary to release oxytocin into the blood. (Paediatrics main exam (MBPE 4300): 24 January 2022, Paper One, 100 MCQs, 2 short)
- Outline the changes in the hypothalamus/pituitary/thyroid endocrine axis. (20 marks) (hsd sept21 clin chem saqs essay and case studies papers final exam papers — Past)
Study material on Hypothalamus
- Hypothalamic Hormones: Master Regulators of the Endocrine System
- MEDICAL PHYSIOLOGY II ESsays
- Sleep Physiology Examination Paper
- LECTURE 7: GI tract Hormones
- Medical Physiology Section A - Complete Questions and Comprehensive Answers
- Medical Physiology Paper II MCQs
- Thyroid Hormone
- END YEAR PP1 & PP2 2025 Physiology: MCQs for Medical School Exams
- Endocrine and Metabolic Pathology MCQs for Medical Students
- LECTURE 6: Pancreatic and Adrenal Hormones
- Limbic System and Hypothalamus
- Limbic System and Hypothalamus Examination
- Limbic System and Hypothalamus
- Medical Physiology IV (CNS)
- Weekly Year 2: Physiology Exam - June 5, 2026 (Section A: MCQs)
- Weekly Year 2: Physiology Exam - May 29, 2026 (Section A: MCQs)
Practice questions on Hypothalamus
The posterior and lateral hypothalamus, in combination with the preoptic area, are involved in the control of which of the following functions?
- Cardiovascular functions involving blood pressure and heart rate
- Regulation of thirst and water intake
- Stimulation of uterine contractility and milk ejection from the breast
- Signaling that food intake is sufficient (satiety)
- Secretion of hormones from the anterior lobe of the pituitary gland
Answer: B. The posterior and lateral hypothalamus, along with the preoptic area, are key regions involved in osmoregulation and thirst control. These areas contain osmoreceptors that detect changes in blood osmolality and initiate appropriate responses including thirst and ADH release. The other functions are controlled by different hypothalamic regions. ---
Bilateral lesions involving the ventromedial hypothalamus will lead to which of the following deficits?
- Decreased eating and drinking
- Loss of sexual drive
- Excessive eating, rage and aggression, hyperactivity
- Uterine contractility, mammary gland enlargement
- Obsessive compulsive disorder
Answer: C. The ventromedial hypothalamus contains the satiety center. Bilateral lesions of this area result in hyperphagia (excessive eating), leading to obesity, along with increased aggression and hyperactivity. This is opposite to what would occur with lateral hypothalamic lesions, which would cause decreased eating. ---
Dopamine from the hypothalamus nuclei
- Is a hydrophobic catecholamine
- Has receptors on lactotroph cells of the anterior pituitary
- Has receptors in breast tissue
- Has a positive tropic action on Thyrotropin-releasing hormone (TRH)
- Has a positive tropic action on prolactin secretion
Answer: B. Dopamine acts as prolactin-inhibiting hormone (PIH), binding to receptors on lactotroph cells to inhibit prolactin release. ---
Damage to the ventromedial nucleus of the hypothalamus would most likely result in which of the following?
- Insomnia
- Hyperphagia and obesity
- Hypothermia
- Diabetes insipidus
Answer: B. The ventromedial nucleus of the hypothalamus is recognized as a 'satiety center'. Damage to this area typically leads to hyperphagia (excessive eating) and consequent obesity, as the sensation of fullness is impaired. Insomnia (A) is associated with damage to anterior hypothalamus or ascending reticular activating system. Hypothermia (C) is often linked to damage in the posterior hypothalamus (heat production). Diabe
Growth hormone (GH) secretion is stimulated by Growth Hormone-Releasing Hormone (GHRH) from the hypothalamus and inhibited by which of the following?
- Thyrotropin-releasing hormone (TRH)
- Somatostatin
- Dopamine
- Corticotropin-releasing hormone (CRH)
Answer: B. Growth hormone (GH) secretion from the anterior pituitary is regulated by two hypothalamic hormones: Growth Hormone-Releasing Hormone (GHRH) stimulates GH release, and somatostatin (also known as Growth Hormone-Inhibiting Hormone, GHIH) inhibits GH release. TRH (A) stimulates TSH and prolactin. Dopamine (C) inhibits prolactin. CRH (D) stimulates ACTH.
The posterior and lateral hypothalamus, in combination with the preoptic area, are involved in the control of which of the following functions?
- Thermoregulation
- Sleep-wake cycles
- Hunger and satiety
- Reproductive behaviors
Answer: A. The hypothalamus, including the preoptic area, posterior, and lateral regions, plays a critical role in maintaining homeostasis, with significant involvement in thermoregulation (both heat loss and heat conservation mechanisms). While other functions listed are also hypothalamic functions, thermoregulation is a primary role for this specific combination of areas.