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Hypothalamus MCQ

This article contains mcqs on the topic hypothalamus.

The hypothalamus is a part of the brain that lies beneath the thalamus and forms the floor of the third cerebral ventricle. The hypothalamus is a region of the brain that has a crucial role in maintaining body balance. The pituitary (infundibular) stalk, a tubular connection to the pituitary gland, is a tiny cone-shaped structure that descends downward from the brain. Because of its complicated relationship with the pituitary gland, the hypothalamus serves as a control centre for many activities of the autonomic nervous system, as well as having impacts on the endocrine system.

Q1. What connects hypothalamus to the pituitary?

  1. Corpus callosum

  2. Infundibulum

  3. Anterior

  4. Cerebral cortex

Answer. The correct option is ‘2’  Infundibulum. It is a funnel-like structure. It forms a connection between hypothalamus and posterior pituitary.

Q2. Hypothalamus forms a part of which of the following:

  1. Midbrain

  2. Hindbrain

  3. Forebrain

  4. Future brain

Answer. The correct answer is option ‘3’ forebrain. Hypothalamus is the part of the brain that comprises a number of small nuclei along with a variety of functions. 

Q3. Displacement of the set point in the hypothalamus is mainly due to

  1. Pyrogens

  2. Effectors

  3. Receptors

  4. Pathogens

Answer. The correct answer is option ‘1’ pyrogens. Displacement of the set point in the hypothalamus is mainly caused by Pyrogens. Pyrogens represents a low molecular weight protein that is produced in response to any stimulation by exogenous pyrogens and released into the circulation system.

Q4. Which among the following hormones are produced in hypothalamus

  1. Oxytocin and estrogen

  2. Oxytocin and Antidiuretic hormone

  3. Oxytocin and testosterone

  4. Oxytocin and thyroxine

Answer. The correct answer is option ‘2’ oxytocin and antidiuretic hormone. These hormones possess specific functions and also have specific target sites.

Q5. Damage to hypothalamus portal system might result in which of the following

  1. Decreased secretion of ADH

  2. Decreased secretion oxytocin

  3. Decreased secretion PTH

  4. Decreased secretion TSH

Answer. Here the correct option is ‘4’ decreased secretion of TSH. TSH will be decreased if any damage occurs in the hypothalamus region.

Q6. Secretion of different anterior pituitary hormones is generally controlled by other hormones that are released from

a) Hypothalamus

b) Adrenal gland

c) Pancreatic lobes

d) Thyroid gland

Answer. The correct answer is option ‘1’ hypothalamus. It controls the secretion of anterior pituitary hormones. It is located in the forebrain.

Q7. Which of the following is composed of nerve tissue and down growth from hypothalamus?

a) Anterior pituitary

b) Thymus

c) Posterior pituitary

d) Adrenal

Answer. Here the correct answer is option ‘3’ posterior pituitary. It forms the posterior lobe of the pituitary gland. It is a group of axonal projections arising from hypothalamus that terminate behind anterior pituitary.

Q8. What will be the effect if hypothalamus fails to secrete GnRH 

  1. Hypersecretion of oxytocin

  2. b)Hyposecretion of pituitary gonadotropins

  3. Hypersecretion of pituitary gonadotropins

  4. Hypersecretion of prolactin

Answer. Here the correct answer is option ‘2’ i.e. hyposecretion of pituitary gonadotropins. GnRH is gonadotropin releasing hormone. These are released in gonads. If hypothalamus fails to secrete GnRH the effect would result in the hyposecretion of pituitary gonadotropins.

Q9. Osmoreceptors in hypothalamus are involved in which of the following

  1. Secretion of ADH

  2. Secretion of GH

  3. Secretion of ACTH

  4. Secretion of Aldosterone

Answer. The correct answer is option ‘1′ secretion of ADH. Osmoreceptors are sensory receptors found in the hypothalamus. It helps in detecting changes in osmotic pressure.

Q10. GnRH directly stimulates the release of which of the following hormone

  1. Thyrocalcitonin

  2. Progesterone

  3. Estrogen

  4. FSH

Answer. The correct answer is option ‘4’ FSH. GnRH directly stimulates the release of FSH. It helps in regulating the development, growth, pubertal maturation, and reproductive processes of the body.

Q11. Release of corticotropin-releasing factor is controlled by nervous stimulation of hypothalamus as a result of which of the following

  1. Heat and cold

  2. Stress

  3. Pain

  4. All of above

Answer. The correct answer here is option ‘4’ all of the above. This means that heat, cold, stress and pain all of these factors stimulate the release of the corticotropin-releasing hormone.

Q12. Which among the following hormones controls the release of thyrotropin releasing factor from the hypothalamus 

  1. Oxytocin

  2. Testosterone

  3. Thyroxine

  4. Oestrogen

Answer. The correct answer is option ‘3’ thyroxine. 

Q13. Which of the following endocrine system helps in the release of somatostatin

  1. Anterior pituitary

  2. Posterior pituitary

  3. Thyroid gland

  4. Hypothalamus

Answer. The correct answer is option ‘4’ hypothalamus.

Q14. The gland which is under direct neural control of the hypothalamus is known as

  1. Posterior pituitary

  2. Anterior pituitary

  3. Thyroid gland

  4. Pineal gland

Answer. The correct answer is option ‘1’ posterior pituitary. 

Q15. The Neurohypophysis comprises of which of the following

  1. Pars intermedia

  2. Pars nervosa

  3. Pars distalis

  4. Both a and c

Answer. The correct answer here is option ‘2’ pars nervosa. 

Q16. Which among the following hormones is secreted by Pars Nervosa

  1. Melanocyte

  2. Oxytocin

  3. Vasopressin

  4. Both b and c

Answer. Here the correct option is ‘4’ both b and c.

Q17. Which of the following correctly describes thyroid hormone?

  1. Bind to receptor inside of the cell

  2. Released from anterior pituitary

  3. Binds to receptor on the outside of the cell

  4. Derived from cholesterol

Answer. The correct answer is option ‘3’ binds to a receptor on the outside of the cell.

Q18. After consuming a double cheeseburger along with a milkshake, which among the following hormones would not be expected to increase?

  1. Cholecystokinin

  2. Insulin

  3. Secretin

  4. Glucagon

Answer. The correct answer is option ‘4’ glucagon. As after eating a double bacon cheeseburger and milkshake the level of glucose in blood will be increased thus, to lower it insulin is released rather than glucagon which is released whenever the blood glucose level falls.