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What is a neuron? Draw a labelled diagram of a neuron. What is a synapse? What happens at the synapse between two neurons?

Important Questions on The Nervous System

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7th ICSE
IMPORTANT
Lakhmir Singh's Science Biology>Chapter 6 - The Nervous System>EXERCISES>Q 1

Label the different parts of the vertebral column.
 

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7th ICSE
IMPORTANT
Lakhmir Singh's Science Biology>Chapter 6 - The Nervous System>EXERCISES>Q 2

Label the different parts of human brain

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7th ICSE
IMPORTANT
Lakhmir Singh's Science Biology>Chapter 6 - The Nervous System>EXERCISES>Q a
P is a cell (or group of cells) in the human body which is sensitive to a particular type of stimulus and conveys the messages to CNS through nerves Q. On the other hand, R is a part of the human body which can respond to a stimulus according to the instructions sent from the CNS through nerves S.
What is P? Name five organs which contain cells (or group of cells) like P.
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7th ICSE
IMPORTANT
Lakhmir Singh's Science Biology>Chapter 6 - The Nervous System>EXERCISES>Q b
P is a cell (or group of cells) in the human body which is sensitive to a particular type of stimulus and conveys the messages to CNS through nerves Q. On the other hand, R is a part of the human body which can respond to a stimulus according to the instructions sent from the CNS through nerves S.
Name the nerves Q.
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7th ICSE
IMPORTANT
Lakhmir Singh's Science Biology>Chapter 6 - The Nervous System>EXERCISES>Q c
P is a cell (or group of cells) in the human body which is sensitive to a particular type of stimulus and conveys the messages to CNS through nerves Q. On the other hand, R is a part of the human body which can respond to a stimulus according to the instructions sent from the CNS through nerves S.
What is R? Give two examples of R.
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7th ICSE
IMPORTANT
Lakhmir Singh's Science Biology>Chapter 6 - The Nervous System>EXERCISES>Q d
P is a cell (or group of cells) in the human body which is sensitive to a particular type of stimulus and conveys the messages to CNS through nerves Q. On the other hand, R is a part of the human body which can respond to a stimulus according to the instructions sent from the CNS through nerves S.
Name nerves S.
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7th ICSE
IMPORTANT
Lakhmir Singh's Science Biology>Chapter 6 - The Nervous System>EXERCISES>Q e
P is a cell (or group of cells) in the human body which is sensitive to a particular type of stimulus and conveys the messages to CNS through nerves Q. On the other hand, R is a part of the human body which can respond to a stimulus according to the instructions sent from the CNS through nerves S.
How do messages travel through the nerves Q and S?
HARD
7th ICSE
IMPORTANT
Lakhmir Singh's Science Biology>Chapter 6 - The Nervous System>WORKSHEET>Q 1

Match the following column

a. Also known as self-governing nervous system. 1. Medulla Oblongata i. It receives information from the surroundings, processes it, interprets it and then responds accordingly.
b. Its cell body is like a typical animal cell which contains cytoplasm and a nucleus. 2. Cerebellum  ii. It emerges from the base of the brain and joins the spinal cord.
c. It is the control system for all our actions, thinking and behaviour. 3. Spinal cord  iii. Coordinates smooth body movements such as walking and dancing.
d. As many as 31 pairs of nerves arise from it. 4. Neuron iv. Controls the activities of the organs inside our body automatically even without our thinking about them.
e. A small egg-shaped part under the cerebrum at the back of the head. 5. Autonomic nervous system v. Its structure is specially adapted to be able to carry messages over large distances in the body.
f. It is also the controlling centre for reflexes such as swallowing, coughing and sneezing. 6. Nervous system vi. It begins in continuation with medulla and extends downwards.