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प्रश्न
Define the following:
Action potential
उत्तर
Action potential - A momentary change in electrical potential on the surface of a cell, or a nerve or muscle cell, that occurs when it is stimulated, resulting in the transmission of an electrical impulse.
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संबंधित प्रश्न
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 coloured part of the eye is called
- retina
- iris
- lens
- pupil
Answer the following question:
What is a reflex action? Explain it with two examples.
Explain the Term: Reflex action
Give Technical Term:
The neuron which conducts impulse from the central nervous system to the organs.
Give Technical Term:
Nerve that transfers impulses from ear to brain.
Describe the functional areas of Cerebrum.
Distinguish between
Sympathetic and parasympathetic nervous system.
Which acts as a link between the nervous system and endocrine system?
There are ____________ lumbar spinal nerves.
