Biology

Endocrine and Exocrine Glands

690 Questions

The endocrine and exocrine glands topic explores the human body's essential secreting structures, including the pituitary, thyroid, and salivary glands. Questions often focus on gland locations, their specific secretions, and crucial physiological functions. This subject is a core component of the general science syllabus across many highly competitive examinations.

Master endocrine glandsPituitary gland locationSalivary gland functionsThyroid and ductless glandsApocrine sweat glands

Endocrine and Exocrine Glands Questions

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

Mucus, saliva, earwax, oil, milk, digestive enzymes, bile juice, tear, cortisol, androgen, HCL, thymosin, rennin, Pancreatic juice

How many of them are secreted by exocrine glands?

  1. Twelve

  2. Three

  3. Eight

  4. Nine
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
 Endocrine glands Thymosin is secreted by the thymus gland.Cortisol is secreted by the adrenal gland.Androgen is secreted by the adrenal gland.Renin is secreted by the kidney.
 Exocrine glands Saliva is secreted by the salivary gland.Pancreatic juice is secreted by the pancreas.Ear wax is secreted by the ceruminous gland.Tear is secreted by lacrimal gland.Milk is secreted by the mammary gland.Mucus is secreted by nasal mucosa as well as through bronchi and trachea.Oil is secreted by sebaceous gland.Bile is secreted by the liver.
  • HCl is secreted by parietal cells and digestive enzymes are secreted by different digestive organ (stomach and small intestine).
  • So, the correct answer is 'Eight'.
Multiple choice biology endocrine glands different type of gland glands in humans coordination in human beings- chemical control

Secretions of exocrine glands exclude

  1. Saliva

  2. Insulin

  3. Ear wax

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

Exocrine glands are glands that produce and secrete substances onto an epithelial surface by way of a duct. Examples of exocrine glands include sweat, salivary, mammary, ceruminous, lacrimal, sebaceous, and mucous.

So, the correct option is ‘Saliva’.

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

Ductless glands are called 

  1. Alveolar glAnds

  2. Tubular glands

  3. Exocrine glands

  4. Endocrine glands
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
A. Alveolar glands are also known as saccular glands and consist of a sac-like secretory portion.
B. Tubular glands have a straight duct with opening that comprises of clusters of secretory glands.
C. Exocrine glands are the glands that secrete their products through ducts.
D. Endocrine glands are the ductless glands which secrete their products directly into the blood.
So, the correct answer is 'Endocrine glands'.
Multiple choice biology endocrine glands different type of gland glands in humans coordination in human beings- chemical control

Which of the following gland has both exocrine and endocrine parts?

  1. Thyroid

  2. Pituitary

  3. Adrenal

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

The endocrine system is composed of ductless glands. Endocrine glands secrete hormones. Glands that have ducts are called exocrine glands. The secretions of exocrine glands reach their target by travelling through a duct (tube). The mixed gland is a gland that produces endocrine and exocrine secretions. The pancreas is an example of a mixed gland because it secretes hormones in the circulation, like insulin and glucagon, but it also releases an exocrine secretion, the pancreatic juice. Whereas, thyroid, pituitary and adrenal glands are not having both endocrine and exocrine system.

Therefore, the correct answer is option D.

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

In which category of gland, secretary cells mature, rupture and becomes the secretary product.

Type Example
$1$ Holocrine gland Sebaceous gland
$2$ Exocrine gland Salivary gland
$3$ Apocrine gland Mammary gland
$4$ Merocrine gland Pancreas
  1. $1$
  2. $2$
  3. $3$
  4. $4$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Holocrine glands are a type of exocrine glands. They basically release their contents by rupturing, resulting in the death of the secretory cells itself and the contents are released into the lumen. For example, sebaceous glands.

So, the correct answer is '1'.
'.'

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

Which of the following is not a gland ? 

  1. Stomach

  2. Liver

  3. Kidney

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

The glands are structures in which the cells are involved in the production of hormones or secretions. These hormones or secretions have an effect on the substrates. There are cells in the stomach which are responsible for the production of mucus, HCl, digestive enzymes, etc. There are glandular cells in the stomach but the stomach is not considered as a gland. The liver is the gland which produced various hormones, enzymes and the bile juice. The pancreas produces pancreatic juice with enzymes and hormones by the Islet cells of Langerhans. The kidney is a gland which secretes the hormones erythropoietin and renin.

Thus, the correct answer is option A. 

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

The ductless glands in the human body which secrete hormones are called as

  1. Exocrine glands

  2. Endocrine glands

  3. Epithelial glands

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

a) Endocrine glands are the ductless glands that release their secretion (hormones) directly into the bloodstream. The released hormones affect the target cells which specifically carry their receptors.

 b) Exocrine glands release their secretions by duct into the target cells/organs only. 
c) All glands are formed by invagination or infolding of glandular epithelium and thus, are called as epithelial glands. It includes both endocrine and exocrine glands. 
d) Glands that secrete the substances which regulate the metabolic processes are known as metabolic glands. These can be both endocrine and exocrine in nature. 
So, the correct answer is option B.

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

Which of the following is not true?

  1. The endocrine system is composed of ductless glands.

  2. Contents of the endocrine system are released into the blood stream.

  3. The Mammary gland is part of the endocrine system.

  4. Exocrine glands are not part of the endocrine system.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
The mammary gland is a gland located in the breasts of females that is responsible for lactation, or the production of milk. Mammary glands are a part of exocrine system. They have ducts and hence not a part of endocrine system.
Multiple choice biology endocrine glands different type of gland glands in humans coordination in human beings- chemical control

I am gland with ducts. My secretion may be enzyme, sweat, oil or tear. My ducts transports these secretion close to the source of production. Who am I?

  1. Thyroid gland

  2. Exocrine gland

  3. Endocrine gland

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

Exocrine gland is the right answer because exocrine glands are glands with ducts unlike endocrine glands. Salivary gland, sweat gland etc are exocrine gland.

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

Endocrine glands are those glands which pour their secretion directly into 

  1. Ducts

  2. Substrate

  3. Blood

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Endocrine glands are the ductless glands which secrete their products directly in the blood from where they reach the target organs and affect their functioning and regulation. For example, pituitary gland, hypothalamus, pineal gland etc. On the other hand, the glands which secrete their products through ducts are called exocrine glands. 
So, the correct answer is 'Blood'.
Multiple choice biology endocrine glands different type of gland glands in humans coordination in human beings- chemical control

A heterocrine gland is one which

  1. Has two distinct parts

  2. Serves a double function of exocrine and endocrine gland

  3. Produces two types of hormones

  4. Occurs in two places
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Heterocrine glands are the glands which act both as exocrine and endocrine glands. Exocrine glands are the glands that secrete their products through ducts whereas endocrine glands are the ductless glands which secrete their products directly into the blood. For example, in humans, Pancreas is a heterocrine gland. It secretes insulin hormone into blood and act as endocrine gland and when it secretes digestive enzymes and juice through pancreatic duct, it acts as exocrine gland.
So, the correct answer is 'Serves a double function of exocrine and endocrine gland'.
Multiple choice biology endocrine glands different type of gland glands in humans coordination in human beings- chemical control

Which of these is not an endocrine gland? 

  1. Liver

  2. Pancreas

  3. Testes

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

Endocrine glands are the ductless glands that secrete their products into bloodstream from where they are carried to the target organs. Pancreas, testes and thymus are endocrine glands as they secrete hormones. Pancreas secrete insulin and glucagon, testes secrete testosterone and thymus secrete thymosin hormone. Liver is not an endocrine gland instead, it is a digestive organ which secretes bile juice which is necessary for emulsification of fats.
So, the correct answer is 'Liver'.