Question

2. Which of the following is not a function of the nervous system?
(a) Informing us about the surroundings and the changes occurring.
(b) Controlling all the voluntary and involuntary activities in the body.
(c) Helping us think, learn and remember.
(d) Helping us breathe.

Anyone please answer the questions​

Answer 1

Answer ⤵️⤵️

C)

Sensory neurons receive sensory inputs from the internal and external environment and transmit it to CNS (brain and spinal cord) for processing. Motor neurons transmit the nerve impulses from CNS to effectors (muscles and glands). According to the signal, carried by motor nerves to effector organs, the muscles and glands perform their actions (contraction and secretion respectively) and thereby coordinating the metabolic activities.

The two main types of cells of the nervous system are neurons and neuroglia. The myelinated axon fibres are covered with white myelin sheath formed from the membranes of tightly spiraled neuroglia cells. Thus, option C is the correct answer.

Answer 2

Helping us breathe is not a function of the nervous system. (option d)

What are the functions of the nervous system?

• Our nervous system consists of the Central Nervous System(CNS) and the Peripheral Nervous System(PNS).
• The PNS consists of all the afferent and efferent nerves in the brain. The CNS consists of the brain and the spinal cord.
• The main functions are:

1. Homeostasis: Controlling the body's internal environment, such as regulation of body temperature.
2. Reflex Actions: The involuntary movements of our body that protect us are called reflex actions Examples are the removal of our hands when we touch a hot object, squinting of eyes in bright light, etc.
3. Voluntary movements: All voluntary movements such as walking, talking, nodding our head are under the control of the nervous system.
4. Memory and Learning: All comprehension, recognizing, and reading abilities, memory formation are functions of the nervous system.

• Even though the nervous system regulates breathing, it is mainly the function of the respiratory system.
• The respiratory system broadly consists of:

1. Nostrils
2. Nasal Passage
3. Larynx
4. Pharynx
5. Trachea
6. Bronchioles
7. Lungs
8. Alveoli

Thus, helping us breathe is not the direct function of the nervous system.

Option (d) is the correct answer.