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प्रश्न
Define the following:
Reflex arc
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उत्तर
The path that an impulse takes in a reflex action is called a reflex arc.
संबंधित प्रश्न
What are the two parts of the vertebrate nervous system?
What is cranium? What is its function?
What are the main organs of the human nervous system? Draw a labelled diagram to show the main organs of the human nervous system.
How are the messages carried across a synapse? Explain with the help of a labelled diagram.
In a synapse, chemical signal is transmitted from :
(a) axon to cell body of the same neuron
(b) cell body to axon end of the same neuron
(c) dendrite end of one neuron to axon end of adjacent neuron
(d) axon end of one neuron to dendrite end of adjacent neuron
In a neuron, the conversion of electrical signal to a chemical signal occurs at/in:
Multiple choice question. Tick (✓) the correct choice:
Nervous system in humans consists of
- brain and nerves
- brain and spinal cord
- brain, spinal cord and nerves
- none of the above
Multiple choice question. Tick (✓) the correct choice:
Pinna is a part of
- inner ear
- external ear
- middle ear
- tongue
State whether the following statement is true (T) or false (F):
Cochlea is a part of middle car.
Given alongside is the diagram of a neuron. Name the parts numbered 1-5.
- ............................................................................................... .
- ............................................................................................... .
- ............................................................................................... .
- ............................................................................................... .
- ............................................................................................... .
Mention the three functions of the spinal cord.
Answer the following questions briefly:
Explain how the human eye adapts itself to bright light and dim light.
Fill in the blank with the function in the following:
Cochlea : ________
Choose the correct answer.
More than one foot long cells of the body are __________
Give Reason:
Why injury to medulla oblongata results in death?
Name the following:
Unit of the nervous system is
Give Technical Term:
The neuron which conducts impulse from the central nervous system to the organs.
Mention, if the following statement is True or False
A nerve impulse passes from one neuron to another across a synapse.
Mention, if the following statement is True or False
The nerve impulse in the eye develops due to the chemical changes brought about in the sensitive cells (rods and cones) by the light energy of the image.
List out the functions of Endocrine system and Nervous system.
Hypothalamus is the thermoregulatory centre of the human body.
What are masses of grey matter located in white matter in the cerebral hemisphere?
Which of the following cranial nerves are mixed type?
Which of the following is NOT a part of forebrain?
What is the function of the red nucleus?
______ is also known as duct of Sylvius.
The outermost layer of meninges:
Visceral nervous system comprises of ______.
