The correct Answer is A-3, B-2, C-1, D-4
Explanation
The human nervous system is broadly divided into the Central Nervous System (CNS) and the Peripheral Nervous System (PNS). Different parts of the brain and the peripheral nerves are specialized for distinct functions, including sensory integration, motor control, and regulation of involuntary actions.
Statement-wise Analysis
- A. Fore-brain - 3. Integration of sensory inputs and voluntary control
- Correct: The forebrain is the main thinking part of the brain. It comprises the cerebrum, which is responsible for voluntary actions, processing sensory information (hearing, smell, sight, etc.), and higher cognitive functions like memory, learning, and reasoning.
- B. Medulla - 2. Involuntary actions like blood pressure and vomiting
- Correct: The medulla oblongata, a part of the hindbrain, controls various involuntary actions such as blood pressure, salivation, vomiting, and heart rate.
- C. Cerebellum - 1. Precision of voluntary actions and balance
- Correct: The cerebellum, also part of the hindbrain, is responsible for the precision of voluntary actions, maintaining posture, and balance of the body. It coordinates muscular activities.
- D. Peripheral nervous system - 4. Nerves linking the central nervous system with the body
- Correct: The Peripheral Nervous System (PNS) consists of all the nerves that extend from the brain and spinal cord (CNS) to all other parts of the body, including muscles, organs, and glands. It facilitates communication between the CNS and the rest of the body.
Key Takeaway
Specific regions of the nervous system are specialized for distinct functions, with the forebrain handling voluntary control and sensory integration, the medulla regulating involuntary actions, the cerebellum coordinating precision and balance, and the peripheral nervous system connecting the CNS to the body.