Tag: nervous and endocrine system in humans

Questions Related to nervous and endocrine system in humans

Neurosecretory cells occur in

biology chemical messages for homeostasis hypothalamus nervous and endocrine system in humans coordination in human beings- chemical control

  1. Hypothalamus

  2. Cerebral cortex

  3. Medulla oblongata

  4. Corpus callosum

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Correct Option: A

In mammals the brain centre regulating body temperature is found in 

biology chemical messages for homeostasis hypothalamus nervous and endocrine system in humans coordination in human beings- chemical control

  1. Cerebellum

  2. Cerebral lobe

  3. Hypothalamus

  4. Medulla oblongata

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Correct Option: C

Which of the following statements about 'neuro-hypophysis' is correct?

biology chemical messages for homeostasis hypothalamus nervous and endocrine system in humans coordination in human beings- chemical control

  1. It stores the hormones produced by adenohypophysis

  2. It is poorly developed and functionless in humans

  3. It stores and releases hormones secreted by hypothalamus

  4. It secretes its own hormones

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Correct Option: C
Explanation:

Neurohypophysis or the posterior lobe of pituitary gland consists of axonal endings of neurosecretory neurons located in hypothalamus. Oxytocin and vasopressin are the hormones secreted by hypothalamus but stored and released by neurohypophysis.

It is bridge between nervous system and endocrine system

biology chemical messages for homeostasis hypothalamus nervous and endocrine system in humans coordination in human beings- chemical control

  1. Thalamus

  2. Hypothalamus

  3. Limbic system

  4. Parietal lobe

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Correct Option: B

A man is suffering from abnormally low body temperature, loss of appetite and extreme thirst. His brain scan is liable to show tumour in

biology chemical messages for homeostasis hypothalamus nervous and endocrine system in humans coordination in human beings- chemical control

  1. Pons

  2. Cerebellum

  3. Medulla oblongata

  4. Hypothalamus

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Correct Option: D

Hypothalamus is not involved in

biology chemical messages for homeostasis hypothalamus nervous and endocrine system in humans coordination in human beings- chemical control

  1. Osmoregulation and thirst

  2. Temperature control

  3. Accuracy of muscular movement

  4. Sleep wake cycle

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Correct Option: C

Pituicytes are under the control of ____________.

biology chemical messages for homeostasis hypothalamus nervous and endocrine system in humans coordination in human beings- chemical control

  1. Adenohypophysis

  2. Hypothalamus

  3. Neurohypophysis

  4. Both (a) and (c)

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Correct Option: B
Explanation:

Pituicytes are the cells found in the posterior lobe of pituitary gland. The hormones, oxytocin and vasopressin released by pituicytes are actually produced by hypothalamus.

Which is not an example of homologous structure

biology chemical messages for homeostasis hypothalamus nervous and endocrine system in humans coordination in human beings- chemical control

  1. Heterodont teeth in mammals

  2. different types of vertebrates

  3. Both

  4. None

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Correct Option: D
Explanation:

Heterodont teeth and different types of vertebrates are examples of homologous structures. The structure which are different in appearance and perform different functions but have similar structure and developmental origin are called homologous organs.

Somatostatin is produced in.

biology chemical messages for homeostasis hypothalamus nervous and endocrine system in humans coordination in human beings- chemical control

  1. Adenohypophysis

  2. Neurohypophysis

  3. Pineal gland

  4. Basal part of diencephalon

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Correct Option: D
Explanation:

Somatostatin is produced from the hypothalamus(one part of the diencephalon) inhibits the pituitary gland's secretion of growth hormone and thyroid stimulating hormone. So, the correct answer is option D.

Which is correct for Vasopressin

biology chemical messages for homeostasis hypothalamus nervous and endocrine system in humans coordination in human beings- chemical control

  1. It is a long peptide in nature

  2. It is also called as Diuretic hormone

  3. It is released from hypothalamus

  4. It is released from adrenal cortex

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Correct Option: C
Explanation:

Vasopressin is produced by the hypothalamus and is stored in the posterior lobe of the pituitary. It is also called an anti-diuretic hormone (ADH), as it acts on the kidney and promotes re-absorption of water from urine. Thus ADH constantly regulates the amount of water in blood and therefore play a key role in the maintenance of blood pressure.

So the correct answer is "It is released from hypothalamus"