Tag: parts of the brain

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Questions Related to parts of the brain

Multiple choice biology control and coordination in living organisms control of blood glucose endocrine system and hormone hormones in human reproduction testes and ovary parts of the brain kidney

Life saving hormone are secreted by

  1. Pituitary gland

  2. Pineal gland

  3. Adrenal gland

  4. Thyroid gland
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Aldosterone of the adrenal cortex is life-saving hormone because it serves to retain sodium and water to maintain a sufficient blood volume for circulation. So, it maintains the osmolarity and volume of ECF. The pituitary gland regulates secretion of other endocrine glands. Pineal gland secretes melatonin that regulates body’s daily rhythms. Thyroid hormones regulate the basic metabolic rate. Thus, the correct answer is C.

Multiple choice zoology control and coordination in living organisms control of blood glucose endocrine system and hormone hormones in human reproduction testes and ovary parts of the brain kidney

Third ventricle is found in 

  1. Heart of rabbit

  2. Brain of rabbit

  3. Heart of frog

  4. Kidney of frog
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The third ventricle (ventriculus tertius) is one of four connected fluid-filled cavities comprising the ventricular system within the rabbit's brain. The third ventricle is a narrow vertical cleft between the 2 lateral ventricles.

Multiple choice zoology control and coordination in living organisms control of blood glucose endocrine system and hormone hormones in human reproduction testes and ovary parts of the brain kidney

Both organs of which set secretes hormones?

  1. Spleen- Brain

  2. Intestine- Eye

  3. Spleen- Liver

  4. Testes- Placenta
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The main hormone secreted by the testes is testosterone, an androgenic hormone. The placenta is an endocrine gland, that is only present during pregnancy. It secretes human chorionic gonadotrophin hormone (hCG), which is present only during pregnancy.

Multiple choice zoology control and coordination in living organisms control of blood glucose endocrine system and hormone hormones in human reproduction testes and ovary parts of the brain kidney

Role of thymus in human is chiefly concerned with 

  1. Reproduction

  2. Immunology

  3. Calcium balance

  4. Blood coagulation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The thymus gland is an integral part of immune system. It helps in the maturation of lymphocytes. The thymus serves a vital role in the training and development of T-lymphocytes or T-cells, an extremely important type of white blood cell. So, the correct answer is option B.

Multiple choice biology control and coordination in living organisms control of blood glucose endocrine system and hormone hormones in human reproduction testes and ovary parts of the brain kidney

3F gland is 

  1. Adrenal

  2. Thyroid

  3. Gonadal

  4. Pancreas
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The adrenal medulla secretes 2 hormones - adrenalin and noradrenalin. 

Adrenalin is also called as an emergency hormone. Adrenaline brings about increased heartbeat, the rate of respiration and dilation of pupils, thereby preparing the body to face an emergency situation. Adrenalin is also called as 3F hormone because it takes care of emergency functions of the body during fear, fight, and flight. Hence, the adrenal gland is also known as 3F gland. 

Multiple choice zoology control and coordination in living organisms control of blood glucose endocrine system and hormone hormones in human reproduction testes and ovary parts of the brain kidney

Which part of the brain regulates the body temperature, hunger and water balance?

  1. Hypothalamus

  2. Infundibulum

  3. Medulla oblongata

  4. Pons veroli
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The hypothalamus is a mass of grey matter present at the base of the cerebrum. The centre for thirst and drinking regulation is present in lateral hypothalamus while that for hunger and satiety is present in the arcuate nucleus, ventral nucleus and lateral hypothalamic area. The anterior hypothalamic region regulates body temperature.

So, the correct answer is option A.

Multiple choice biology control and coordination in living organisms control of blood glucose endocrine system and hormone hormones in human reproduction testes and ovary parts of the brain kidney

Which one of the following pair correctly matches a hormone with a disease resulting from its deficiency?

  1. Insulin- Diabetes insipidus

  2. Thyroxine- Tetany

  3. Parathyroid hormone- Diabetes mellitus

  4. Luteinizing hormone- Failure of ovulation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Undersecretion of insulin causes diabetes mellitus type I while myxedema is caused by thyroxine deficiency in adults. Hyposecretion of parathyroid hormone causes increased excitability of muscles and their sustained contraction referred to as parathyroid tetany. Luteinizing hormone deficiency causes failure of ovulation as LH surge during midcycle stimulates rupture of Graffian follicle. 

So, the correct answer is option 'Luteinizing hormone- Failure of ovulation'.

Multiple choice biology control and coordination in living organisms control of blood glucose endocrine system and hormone hormones in human reproduction testes and ovary parts of the brain kidney

Puberty may appear due to 

  1. Stimulation of adrenal cortex

  2. Stimulation of adrenal medulla

  3. Secretions from pituitary gland

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Puberty begins with a surge in hormone production, which in turn causes a number of physical changes. It is the stage in life in which a child develops secondary sex characteristics as his or her hormonal balance shifts strongly towards an adult state. This is triggered by the pituitary gland which secretes a surge of hormonal agents into the blood stream, initiating a chain reaction. The male and female gonads are subsequently activated, which puts them into a state of rapid growth and development. The testes release testosterone and the ovaries release estrogen. The production of these hormones increases gradually until sexual maturation is met.

Multiple choice zoology control and coordination in living organisms control of blood glucose endocrine system and hormone hormones in human reproduction testes and ovary parts of the brain kidney

Which part of brain is supposed to be damaged if in an accident, a person lose control of water balance, hunger and body temperature?

  1. Cerebellum

  2. Hypothalamus

  3. Medula oblongata

  4. Corpora quadrigemina
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The hypothalamus is the control centre for many autonomic functions of the peripheral nervous system. Connections with structures of the endocrine and nervous systems enable the hypothalamus to play a vital role in maintaining homeostasis. The hormones produced by this area of the brain govern body temperature, thirst, hunger, sleep, circadian rhythm, moods, sex drive, and the release of other hormones in the body. Hence, if hypothalamus is damaged in an accident, control of water balance, hunger and body temperature will be lost. 

Multiple choice biology control and coordination in living organisms control of blood glucose endocrine system and hormone hormones in human reproduction testes and ovary parts of the brain kidney

Secretion of estrogen is controlled by 

  1. HCG

  2. Progesterone

  3. LH

  4. FSH
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The synthesis and secretion of estrogen is stimulated by follicle-stimulating hormone (FSH), which is, in turn, controlled by the hypothalamic gonadotropin releasing hormone (GnRH).