Free Coordination and Control MCQs with Answers
1,687 Coordination and Control MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
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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- A. CRF
- B. TRF
- C. ADH
- D. ACTH
Explanation: Option D is correct.No, the hypothalamus does not produce ACTH (adrenocorticotropic hormone).
Correct answer: ACTH- A. Epinephrine
- B. Endorphins
- C. Serotonin
- D. All are correct.
Explanation: Option D is correct.Epinephrine (also called adrenaline) can act as both a neurotransmitter and a hormone.
Correct answer: All are correct.- A. Hypophysis
- B. Axons
- C. Corpus callosum
- D. Infundibulum
Explanation: Option D is correct.The pituitary gland is attached to the hypothalamus by a stalk called the infundibulum.
Correct answer: Infundibulum- A. Lack of adernaline
- B. Lack of oxytocin
- C. Lack of ADH
- D. Over-secretion of oxytocin
Explanation: Option C is correct.Lack of ADH, also known as diabetes insipidus, results in the production of large quantities of urine and great…
Correct answer: Lack of ADH- A. Oxytocin and ADH
- B. ACTH and LH
- C. ICSH and TRF
- D. TSH and STH
Explanation: Oxytocin and ADH: Neurosecretory cells in the hypothalamus release oxytocin and ADH into the posterior lobe of the pituitary gland.
Correct answer: Oxytocin and ADH- A. Adenohypophysis
- B. Hypophysis cerebri
- C. Neurohypophysis
- D. Epiphyses cerebri
Explanation: Hypophysis cerebri: This is another name for the pituitary gland, an endocrine gland located at the base of the brain.
Correct answer: Hypophysis cerebri- A. Anterior pituitary
- B. Median pituitary
- C. Posterior pituitary
- D. Pituitary gland
Explanation: Anterior pituitary: The pituitary gland's front lobe produces and secretes hormones like GH, TSH, ACTH, FSH, LH, and PRL, which regulate…
Correct answer: Anterior pituitary- A. Stress
- B. Low thyroxin in blood
- C. Growth and development
- D. Low TRF level
Explanation: Low TRF level: TRF (Thyrotropin-releasing factor) or TRH (Thyrotropin-releasing hormone) is a hormone produced by the hypothalamus that…
Correct answer: Low TRF level- A. CRE
- B. TRF
- C. PIH
- D. SRF
Explanation: PIH (Prolactin Inhibiting Hormone): Also known as dopamine, this hormone is produced by the hypothalamus and inhibits the release of…
Correct answer: PIH- A. Hyperthyroidism
- B. Gigantism
- C. Hypercortical steriodism
- D. SIADH
Explanation: SIADH (Syndrome of Inappropriate Antidiuretic Hormone Secretion): SIADH is typically caused by the inappropriate secretion of antidiuretic…
Correct answer: SIADH- A. FSH. LH and estrogen
- B. Estrogen, FSH and LH
- C. LH, estrogen and FSH
- D. FSH, estrogen and LH
Explanation: Pituitary gland releases FSH hormone and LSH while ovaries produce estrogen and progesterone.
Correct answer: FSH. LH and estrogen- A. T1
- B. T2
- C. T3
- D. T4
Explanation: Free T4 is the active form of thyroxine hormone that enters your tissues where it's needed.
Correct answer: T4- A. Grave's disease
- B. Myxedema
- C. Addison's disease
- D. Cretinism
Explanation: Cretinism: Cretinism, now more commonly referred to as Congenital Hypothyroidism, is a condition that occurs when your body doesn't…
Correct answer: Cretinism1234. Due to hypersecretion of thyroxin, there is increased BMR and, exophthalmic goiter. This occurs in:
- A. Addison's disease
- B. Grave's disease
- C. Cushing's disease
- D. Diabetes mellitus
Explanation: Graves' disease is an immune system disorder that results in the overproduction of thyroid hormones (hyperthyroidism).
Correct answer: Grave's disease- A. Insulin
- B. Calcitonin
- C. FSH
- D. TSH
Explanation: Calcitonin: Calcitonin is a hormone produced by the thyroid gland. It lowers blood calcium levels by inhibiting bone resorption and…
Correct answer: Calcitonin- A. Endocrine
- B. Exocrine
- C. Merocrine
- D. Autocrine
Explanation: The pancreas is unique in that it's both an endocrine and exocrine gland.
Correct answer: Exocrine- A. Alpha cells
- B. Beta cells
- C. Gamma cells
- D. Delta cells
Explanation: Beta cells: Beta cells are the most common type of cell in the islets and constitute about 75% of each islet.
Correct answer: Beta cells- A. STH
- B. ACTH
- C. Blood glucose level
- D. All A, B and C
Explanation: All A, B and C: (STH, ACTH, and blood glucose levels) influence the release of hormones from the Islets of Langerhans.
Correct answer: All A, B and C- A. More insulin production
- B. Low glucose in blood
- C. Destruction of alpha cells
- D. Low calcium in blood
Explanation: Release of hormones from islets of Langerhans is under control of the pituitary trophic bonnones, STH and ACTH and also responds directly…
Correct answer: Low calcium in blood- A. Glucagon
- B. Gastrin
- C. Insulin
- D. Rennin
Explanation: Glucagon: Alpha cells in the pancreas secrete glucagon, a hormone that raises the concentration of glucose and fatty acids in the…
Correct answer: Glucagon