Tag: parts of the brain

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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 of the following is neuropeptide hormone?

  1. Vasopressin

  2. Insulin

  3. ACTH

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

Antidiuretic hormone, also known commonly as vasopressin, is a nine amino acid peptide secreted from the posterior pituitary. It has two principal sites of action: the kidney and blood vessels. Its two primary functions are to retain water in the body and to constrict blood vessels. 

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

A decrease in the level of estrogen-progesterone causes

  1. Growth and dilation of myometrium

  2. Growth of endometrium

  3. Constriction of uterine blood vessels leading to shedding of endometrium or uterine epithelium

  4. Release of ovum from the ovary
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Menstruation is the shedding of the lining of the uterus (endometrium) accompanied by bleeding. Bleeding occurs after oestrogen and progesterone levels decrease at the end of the previous cycle. This decrease causes the top layers of thickened lining of the uterus (endometrium) to break down and be shed. 

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 gland is concerned with salt equilibrium in body?

  1. Anterior Pituitary

  2. Pancreas

  3. Adrenal

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

The adrenal cortex produces a hormone, called as aldosterone, that is involved in regulating the amount of salt and water in the body. Aldosterone is a mineralocorticoid, which acts on the principal cells of the collecting ducts, ducts of sweat and salivary glands.

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 one of the following statements about sex hormones is correct?

  1. Testosterone is produced by Leydig cells under the influence of luteinizing hormone (LH).

  2. Progesterone is secreted by corpus luteum and soften ligaments during child birth.

  3. Estrogen is secreted by both Sertoli cells and corpus luteum.

  4. The progesterone produced by corpus luteum is biologically different from the one produced by placenta.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In the male, luteinizing hormone promotes the development of the interstitial tissue (Leydig cells) of the testes and hence promotes the secretion of the male sex hormone, testosterone. 

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 one affects liver, muscle and adipose tissue?

  1. Androgen

  2. Insulin

  3. Progesterone

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

Insulin helps control blood glucose levels by signaling the liver and muscle and fat cells to take in glucose from the blood. Insulin therefore helps cells to take in glucose to be used for energy.

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 hormone can increase rate of formation of glycogen, volume of blood in vessel and rate of heart beat?

  1. Insulin

  2. Glucagon

  3. Adrenaline

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

Adrenaline is a natural stimulant hormone made in the adrenal gland of the kidney. Adrenaline is carried in the bloodstream and affects the autonomous nervous system, which controls functions such as the heart rate, dilation of the pupils, and secretion of sweat and saliva.

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

Hormone responsible for the implantation of embryo in uterus and formation of placenta is

  1. Adrenaline

  2. Progesterone

  3. Estradiol

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

Progesterone is a hormone secreted by ovaries. It maintains the lining of the uterus during the middle part of the menstrual cycle and during pregnancy. If a pregnancy occurs, progesterone is produced in the placenta, and levels remain elevated throughout the pregnancy. One of the progesterone's most important functions is to cause the endometrium to secrete special proteins during the second half of the menstrual cycle, preparing it to receive and nourish an implanted fertilized egg. If implantation does not occur, estrogen and progesterone levels drop, the endometrium breaks down and menstruation occurs.

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

Luteinizing hormone

  1. Stimulates ovulation

  2. Stimulates the egg mother cell to undergo completion of meiotic cycle

  3. Stimulates the corpus luteum to secrete progesterone

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In females, ovulation of mature follicles on the ovary is induced by LH secretion known as the preovulatory LH surge. Residual cells within ovulated follicles proliferate to form corpus luteum, which secretes the steroid hormones progesterone and estradiol. Progesterone is necessary for the maintenance of pregnancy, and, in most mammals, LH is required for continued development and function of corpora lutea. The name luteinizing hormone derives from this effect of inducing luteinization of ovarian follicles.

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

Testosterone, a hormone responsible for the development of secondary sexual characteristics in male is produced by the

  1. Spermatogonia

  2. Seminiferous tubules

  3. Anterior lobe of the pituitary

  4. Cells that lie between seminiferous tubules
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Leydig cells, also known as interstitial cells of Leydig, are found adjacent to the seminiferous tubules in the testicle. They produce testosterone in the presence of luteinizing hormone (LH). 

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

Male hormone is

  1. Adrenalin

  2. Testosterone

  3. Progesterone

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

In men, testosterone plays a key role in the development of male reproductive tissues, such as the testis and prostate as well as promoting secondary sexual characteristics, such as increased muscle, bone mass, and the growth of body hair.