Tag: coordination in human beings- chemical control

Questions Related to coordination in human beings- chemical control

Intercellular communication in multicellular organisms occur through 

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

  1. Digestive system only

  2. Nervous system only

  3. Both nervous and endocrine system

  4. Respiratory system only

Show answer
Correct Option: C
Explanation:

In our body, we have 2 types of control and coordinating systems. One is through neurons, known as the nervous system and another is through hormones known as the endocrine system.

Both these systems are responsible for maintaining the overall regulatory system of the body.
So, option C " Both nervous and endocrine system" is the correct answer.

Hormones are ........... substances secreted in ........... quantities by .......... which acts on the effector organs.

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

  1. Electrical, large, endocrine gland

  2. Chemical, small, endocrine gland

  3. Electrical, large, exocrine gland

  4. Chemical, small , exocrine gland

Show answer
Correct Option: B
Explanation:

Hormones are organic chemical substances that are released or secreted by endocrine glands in one part of the body and sends out messages that affect cells in other parts of the body. They act as chemical messenger. The target organs or tissues are affected by and respond to only minute quantities of the hormones. Thus, only a small amount of hormone is required to alter cell metabolism. Major endocrine glands include pituitary, thyroid, parathyroids, pancreas, adrenals, testes or ovaries.

Thus, the correct answer is option B.

Which of the following is not a gland ? 

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

  1. Stomach

  2. Liver

  3. Kidney

  4. Pancreas

Show answer
Correct Option: A
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. 

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

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

  1. Exocrine glands

  2. Endocrine glands

  3. Epithelial glands

  4. Metabolic glands

Show answer
Correct Option: B
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.

Which of the following is not true?

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

  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.

Show answer
Correct Option: C
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.

Which type of signaling mechanism is most likely used for communication between two neighboring cells?

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

  1. Steroid hormones

  2. Molecules released in the extracellular space

  3. Endocrine signaling

  4. Molecules released in the bloodstream

Show answer
Correct Option: B
Explanation:

  •  The extracellular ("outside of cell") ligand-binding, a hydrophobic domain extending through the membrane.
  • This type  of signaling mechanism is most likely used for communication between two neighboring cells is by extracellular space,
Hence, the type of signaling mechanism is most likely used for communication between two neighboring cells is by Molecules released in the extracellular space.
So, the correct answer is 'Molecules released in the extracellular space'.

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?

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

  1. Thyroid gland

  2. Exocrine gland

  3. Endocrine gland

  4. Adrenal gland

Show answer
Correct Option: B
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.

Salivary glands are example of 

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

  1. Exocrine gland

  2. Endocrine gland

  3. Both of the above

  4. All of the above

Show answer
Correct Option: A

Proprioreceptors are found in

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

  1. Sole of feet

  2. Adrenal cortex

  3. Hypothalamus

  4. Medulla

Show answer
Correct Option: A
Explanation:
Proprioreceptors are the receptors sensitive to internal stimuli. The stimulus is received within the body. These respond to position and movement. They are considered as sixth sense of body. Such receptors can be found in sole of feet as they respond to change in position of body.
So, the correct answer is 'Sole of feet'.

Integration system in the body is 

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

  1. Nervous system

  2. Endocrine system

  3. Circulatory system

  4. Nervous and Endocrine system

Show answer
Correct Option: D
Explanation:

  • Nervous system is a coordinated network of nerve cells and fibres by which nerve impulses are transmitted throughout the body.
  • Endocrine system consists of glands that produce hormones.
  • Circulatory system consists of heart and blood vessels which supply throughout the body.
In our body, nervous system and endocrine system jointly integrate all the activities as nervous system directs endocrine system to secrete hormones that act on the target organs.
So, the correct answer is 'Nervous system and Endocrine system'.