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प्रश्न
______ and ______ increases the surface area of cerebrum.
उत्तर
Gyri and Sulci increase the surface area of the cerebrum.
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संबंधित प्रश्न
Draw the structure of a neuron.
Write the names of the indicated parts 1 to 6 in the following diagram:
The human body contains a large number of cells A which are very long and branched, and look like electric wires. The longest branch of this cell is B whereas there are many small branches C. Any two A cells do not join to one another completely in the human body. There is a microscopic gap D between every pair of adjacent A cells through which electric impulses can pass by the release of a chemical substance.
(a) What are cells A?
(b) What is the name of (i) branch B, and (ii) branches C?
(c) What is the microscopic gap D known as?
(d) What is the function of cells like A in the human body?
(e) The cells A are of three types. name the three types.
State whether the following statement is true (T) or false (F):
There are 31 pairs of cranial nerves.
Where is this located?
Nodes of Ranvier
Answer the following question:
What is a reflex action? Explain it with two examples.
Give Reason:
The spinal cord and brain are called the central nervous system.
Which cells of PNS secrete myelin sheath around the nerves?
The node of Ranvier is found in ______
Which part of the brain has control over the endocrine system?
