Question

Give any two functions of cerebellum.

Hint:

The balance between insulin and glucagon is essential for maintaining blood glucose levels in the body.

Answer 1

Step 1: Understanding the Function of the Cerebellum.
The cerebellum is a part of the brain that is responsible for coordinating voluntary movements and maintaining balance.
Step 2: Functions of the Cerebellum.
1. Coordination of Voluntary Movements: The cerebellum helps to coordinate and fine-tune voluntary movements, ensuring smooth and accurate actions.
2. Balance and Posture Control: It plays a crucial role in maintaining balance and posture by regulating muscle tone and coordinating movements.
Step 3: Conclusion.
The cerebellum is essential for motor control, including movement coordination and balance.
ii. Write the names of any four motor cranial nerves with their appropriate serial number.
Solution:
Step 1: Understanding Motor Cranial Nerves.
Motor cranial nerves are responsible for carrying motor information from the brain to the muscles. Here are four motor cranial nerves with their serial numbers:
1. Oculomotor nerve (III) – Controls eye movements and pupil constriction.
2. Trochlear nerve (IV) – Controls eye movement (superior oblique muscle).
3. Abducens nerve (VI) – Controls lateral movement of the eye.
4. Accessory nerve (XI) – Controls the movement of neck and shoulder muscles.
Step 2: Conclusion.
These cranial nerves are essential for motor control in the head and neck region.
iii. Which hormones stimulate liver for glycogenesis and gluconeogenesis?
Solution:
Step 1: Understanding Glycogenesis and Gluconeogenesis.
Glycogenesis is the process of converting glucose into glycogen for storage, while gluconeogenesis is the process of producing glucose from non-carbohydrate precursors.
Step 2: Hormones Involved.
1. Insulin: Stimulates glycogenesis (storage of glucose as glycogen) and inhibits gluconeogenesis.
2. Glucagon: Stimulates gluconeogenesis (production of glucose) and promotes the breakdown of glycogen (glycogenolysis).
Step 3: Conclusion.
Insulin promotes glycogenesis, while glucagon stimulates gluconeogenesis in the liver.