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प्रश्न
Fill in the blank:
Basic structural unit of the nervous system is the ..................
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उत्तर
Basic structural unit of the nervous system is the neuron.
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संबंधित प्रश्न
How are the messages carried across a synapse? Explain with the help of a labelled diagram.
The organ A which is located inside the skull of our body is protected by a bony shell B. It is surrounded by three layers membranes C. The spaces between these layers are filled with a liquid D which protects organ A from mechanical shocks. Organ A in combination with another organ E makes up the central nervous system.
(a) What is organ A?
(b) What are B, C and D?
(c) Name the organ E.
(d) While walking barefoot, if we happen to step on a sharp piece of stone, we immediately lift our foot up. Which of the two organs: A or E, is directly involved in this action?
(e) If we step out from a darkened room into bright sunlight, we close our eyes for a moment. Which of the two organs: A or E, is directly involved in this action?
Multiple choice question. Tick (✓) the correct choice:
The brown pigment melanin is present in ____ of skin.
- Epidermis
- Fat cells
- Dermis
- Hair follicles.
Fill in the blank:
Sense organs have special cells called ____________ for picking up information and transmitting it to the nerves.
Multiple choice question. Tick (✓) the correct choice:
Nervous system in humans consists of
Define the following:
Reflex arc
Complete the following sentence with appropriate word :
A nerve chain between a receptor and an effector organ is called _________.
Choose the Odd One Out:
Long answer question
Explain the Reflex Pathway with the help of a neat labelled diagram.
Trace the sequence of events which occur when you suddenly touch a hot object.
