Tag: glands in humans

Questions Related to glands in humans

How many endocrine glands are located in human brain?

biology endocrine glands different type of gland glands in humans coordination in human beings- chemical control

  1. 3

  2. 4

  3. 2

  4. 9

Show answer
Correct Option: A
Explanation:
There are three endocrine glands which are located in human brain-
1. Hypothalamus is the basal part of diencephalon which is present in forebrain and it regulates a wide spectrum of body functions. It is an anatomical and physiological connection between the nervous system and the endocrine system. It is connected to the pituitary gland by a stalk called infundibulum.
2. Pituitary gland is located in a bony cavity of the sphenoid bone of the skull called sella tursica and is attached to the hypothalamus by a stalk called infundibulum.
3. Pineal gland is located on the dorsal side of forebrain.
So, the correct answer is '3'.

Which one is endocrine? 

biology endocrine glands different type of gland glands in humans coordination in human beings- chemical control

  1. Brunner's gland

  2. Crypts of Lieberkuhn

  3. Pars radiata

  4. Juxtaglomerulus

Show answer
Correct Option: D
Explanation:
A. Brunner's gland are present in small intestine and secrete intestinal juice through ducts.
B. Crypts of Lieberkühn, also known as Paneth cells, are tubular glands present in small intestine and secrete intestinal juice.
C. Pars radiata (medullary rays) are the extensions of medulla into cortex of kidney.
D. Juxtaglomerulus is present in kidneys and consists of juxtaglomerular cells or JG cells that secrete enzyme renin and hormone erythropoietin. Hence, juxtaglomerulus is endocrine (ductless glands) as it secretes a hormone.
So, the correct answer is 'Juxtaglomerulus'.

Which is not involved in endocrine secretion? 

biology endocrine glands different type of gland glands in humans coordination in human beings- chemical control

  1. Leydig cell

  2. Lutein cell

  3. Parafollicular cells of thyroid

  4. Kupffer cells

Show answer
Correct Option: D
Explanation:
Endocrine secretion is the secretion of hormones from endocrine glands which are ductless glands and secrete hormones into blood stream. 
  • Leydig cells are present in testis and secrete testosterone hormone.
  • Lutein cells are present in corpus luteum in ovary and secrete progesterone hormone.
  • Parafollicular cells of thyroid gland secrete calcitonin hormone.
  • Kupffer cells are phagocytic cells in liver that destroy or breakdown red blood cells.
Hence, Kupffer cells are not involved in endocrine secretion.
So, the correct answer is 'Kupffer cells'.

Which one of the following pairs includes only endocrine glands?

biology endocrine glands different type of gland glands in humans coordination in human beings- chemical control

  1. Thymus and testes

  2. Adrenal and ovary

  3. Parathyroid and adrenal

  4. Pancreas and parathyroid

Show answer
Correct Option: C
Explanation:
Endocrine glands are ductless glands that secrete their products directly into the bloodstream from where they are carried to their target organs and cause changes in their functioning and regulation. Parathyroid gland is present on posterior surface of lobes of thyroid gland and secretes parathormone which increases calcium level in blood. Adrenal glands are located on upper surface of kidneys. They consist of adrenal cortex secreting corticoid hormones and adrenal medulla secreting adrenaline and noradrenaline. Both parathyroid and adrenal gland are endocrine glands.
So, the correct answer is 'Parathyroid and adrenal'.

Which of these hormones are not secreted by an endocrine gland?

biology endocrine glands different type of gland glands in humans coordination in human beings- chemical control

  1. ADH

  2. PTH

  3. T$ _4$

  4. ANF

Show answer
Correct Option: D
Explanation:
A. ADH (Antidiuretic hormone) is secreted from posterior lobe of pituitary gland.
B. PTH (Parathormone) is secreted from parathyroid gland.
C. T4 or tetraiodothyronine is thyroxine hormone which is secreted from thyroid gland.
D. ANF (Atrial natriuretic factor) is a peptide hormone secreted from heart.
Endocrine glands are ductless glands which secrete hormones into blood stream. Heart is not an endocrine gland.
So, the correct answer is 'ANF'.

Which one of the following statements is correct ?

biology endocrine glands different type of gland glands in humans coordination in human beings- chemical control

  1. Neurons regulate endocrine activity, but not vice verse

  2. Endocrine glands regulate neural activity, and nervous system regulates endocrine glands

  3. Neither hormones control neural activity nor the neurons control endocrine activity

  4. Endocrine glands regulate neural activity, but not vice versa

Show answer
Correct Option: A
Explanation:
The autonomous nervous system regulates the secretion of glands whereas the glands do not regulate the nervous system.

So, the correct answer is 'Neurons regulate endocrine activity, but not vice verse'.

Glands which pour their secretion-into the blood are called:

biology endocrine glands different type of gland glands in humans coordination in human beings- chemical control

  1. apocrine glands

  2. holocrine glands

  3. exocrine glands

  4. endocrine glands

Show answer
Correct Option: D
Explanation:

The glands which pour their secretions directly into blood are called endocrine glands.

So, the correct option is 'endocrine glands'.

Sebaceous glands:

biology endocrine glands different type of gland glands in humans coordination in human beings- chemical control

  1. help keep the skin soft

  2. are involved in body temperature regulation

  3. are responsible for breaking out in a cold sweat

  4. are found in the external auditory meatus

Show answer
Correct Option: B
Explanation:

Sebaceous glands work with sweat producing eccrine glands to regulate body temperature.

So, the correct option is 'are involved in body temperature regulation'.

The nervous system maintains homeostasis within the body by providing rapid responses to change. The other body system that responds more slowly, but just as importantly, is the 

biology endocrine glands different type of gland glands in humans coordination in human beings- chemical control

  1. Integumentary system

  2. Endocrine system

  3. Cardiovascular system

  4. Musculoskeletal system

Show answer
Correct Option: B
Explanation:

The endocrine system is the collection of glands that produce hormones that produce hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things.

So, the correct option is 'Endocrine system'.

Which of the following is not an endocrine gland?

biology endocrine glands different type of gland glands in humans coordination in human beings- chemical control

  1. Pituitary gland

  2. Thyroid gland

  3. Pineal gland

  4. Salivary gland

Show answer
Correct Option: D
Explanation:
There are two types of glands namely, endocrine glands and exocrine glands. 
Exocrine glands are those that produce and secrete substances onto an epithelial surface of the body through a duct. Examples include sweat, salivary, mammary, ceruminous, lacrimal, sebaceous, and mucous glands.
Endocrine glands are those that secrete their products directly into the bloodstream. Examples include pineal gland, pituitary gland, pancreas, ovaries, testes, thyroid gland, parathyroid gland, hypothalamus and adrenal glands.

So the answer is option D.