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प्रश्न
Explain the structure of the brain.
उत्तर
The brain is the main control centre of the nervous system.
It is enclosed within the bony shell of the cranium.
It consists of three main part:
- Cerebrum: It is the uppermost and largest part with many ridges and grooves. It is divided into right and left halves called cerebral hemispheres. It controls our thinking, reasoning, intelligence, memory, and perception of pain, sound, touch, taste, and smell.
- Cerebellum: It is located under the cerebrum at the back of the head. It maintains the balance of the body and coordinates muscular activity.
- Brain stem (medulla oblongata): It joins the brain to the spinal cord. It controls the activity of internal organs like heartbeat and breathing.
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संबंधित प्रश्न
Name the structural and functional unit of the nervous system.
Multiple choice question. Tick (✓) the correct choice:
The brown pigment melanin is present in ____ of skin.
- Epidermis
- Fat cells
- Dermis
- Hair follicles.
Write one word in the space provided to complete the second pair of the related words pertaining to the nervous system.
Memory: cerebrum:: breathing:
Balance: cerebellum:: reasoning:
Where is this located?
Effector organs
Explain the Term: Nerve
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.
Multiple choice question.
___________ is in direct contact of brain in human.
Short answer question
Give a reason - Injury to medulla oblongata may prove fatal.
Answer the following question.
Describe the nervous system of cockroach.
Which of the following is NOT a part of forebrain?
