Which of the following correctly describes the role of the central ner...
The central nervous system (CNS) is primarily responsible for processing information and regulating bodily functions. It encompasses the brain and spinal cord, serving as the main control center for all activities in the body. The CNS interprets sensory information received from the peripheral nervous system (PNS) and coordinates responses. An interesting fact is that the brain alone contains approximately 86 billion neurons, which play a crucial role in cognitive functions, movement, and sensory perception.
View all questions of this test
Which of the following correctly describes the role of the central ner...
Understanding the Central Nervous System (CNS)
The Central Nervous System (CNS) plays a crucial role in the overall functioning of the human body. It consists of the brain and spinal cord, which are responsible for various essential functions.
Key Functions of the CNS:
- Information Processing: The CNS receives sensory information from the peripheral nervous system (PNS) and processes it. This includes interpreting signals from the senses (sight, sound, touch, etc.).
- Control of Bodily Functions: The CNS controls voluntary actions (like moving limbs) and involuntary actions (like heartbeat and digestion) by sending signals to various parts of the body.
- Coordination: It coordinates complex processes such as thought, memory, and emotional responses, allowing for higher cognitive functions.
Why Options A, C, and D Are Incorrect:
- Option A: While the CNS does receive impulses from the organs, this description is primarily related to the role of the peripheral nervous system (PNS), which transmits these impulses to the brain for processing.
- Option C: This statement describes the peripheral nervous system, not the CNS. The PNS includes all the nerves outside the brain and spinal cord, connecting the CNS to limbs and organs.
- Option D: The CNS is not limited to the spinal cord; it includes both the brain and spinal cord, making this description incomplete.
In conclusion, option B is correct because it accurately encapsulates the CNS's primary responsibilities in processing information and controlling bodily functions.
To make sure you are not studying endlessly, EduRev has designed NEET study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in NEET.