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प्रश्न
What are voluntary and involuntary actions? Which part of the nervous system controls them?
उत्तर
Voluntary action: When an action is produced with the involvement of thoughts, they are called voluntary action. For example, writing an article jumping from heights. These actions are produced consciously by our bodies.
Involuntary action: Actions that take place without consciousness or willingness of an individual are called the involuntary action. Digestion, heart beating, sneezing, etc are few examples of involuntary actions.
- The cerebral cortex controls our voluntary actions like running and walking etc.
- Medulla helps in involuntary actions like a heartbeat, breathing, etc.
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संबंधित प्रश्न
Name two systems which taken together perform the functions of control and coordination in human beings.
The junction between two adjacent neurons is called :
(a) nerve junction
(b) sensory junction
(c) synapse
(d) neuro-muscular joint
Electrical impulse travels in a neuron from:
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.
What are sense organs?
Give the functions of retina, pupil, and optic nerve.
Define the term:
Sensory neuron
Explain the term: sensory nerve.
Which part of brain controls vomiting?
Which part of the brain has control over the endocrine system?
