Nervous System

Q.

What does the Brain stem do?

Q.

The cerebellum is concerned with

1. Memory

2. Vision

3. Perception

4. Coordination of muscular movements

Q. Write down the pathway of inhaled air through the human respiratory system. (2 Marks)

Q. The biology teacher taught the that if we notice the movement of chest while breathing, our chest broadens and move outwards while we inhale oxygen and it relaxes and move inwards while we exhale carbon dioxide. Where does this carbon dioxide in our body come from?

1. Carbon dioxide is formed in the body due to the oxidation of food during the process of Respiration.
2. It is taken in along with the oxygen and then released out as it was.
3. It is present in excess amount in the body by itself
4. It is formed by the breakdown of fats in the body.

Q. The electrically insulating material covering the axon is called the .

1. dendrite
2. myelin sheath
3. cell body

Q. Identify the correct statements regarding breathing.

1. The percentage of carbon dioxide in exhaled air is 0.04%.
2. The percentage of oxygen in inhaled air is 16.4%.
3. The breathing rate is the number of breaths in one minute.
4. Normal breathing rate of an adult human is 15-18 times a minute.

Q. Identify the myelin sheath.

1. 
2. 
3. 

Q.

Write three differences between the cerebrum and cerebellum.

Q. Identify cerebellum from this figure.

1. 
2. 
3. 
4. 

Q. Axons of neurons bundle up to form a .

1. myelin sheath
2. nerve
3. dendrite

Q. Match the folllowing

1. Reflex action
2. Decision making
3. Cardiac centre
4. Posture

Q. State whether the following statements are true or false:
Statement 1: Oxygen breaks down glucose outside the cells of organisms.
Statement 2: Exhaled air has more percentage of CO₂ than inhaled air.

1. Statement 1: True; Statement 2: False
2. Statement 1: False; Statement 2: True
3. Statement 1: True; Statement 2: True
4. Statement 1: False; Statement 2: False

Q. What part of the brain interprets information form the sense organs? [Cerebrum, cerebellum and medulla oblongata]