Advertisements
Advertisements
प्रश्न
Explain the Term: Reflex action
Advertisements
उत्तर
Reflex action is an action which is nearly instantaneous and not under the control of the will. The impulse passes from the sensory cells of the receptor organ along the dorsal root into the spinal cord. From here two messages pass simultaneously—one to the brain and the other travels out along the ventral root to reach the muscle which immediately responds
APPEARS IN
संबंधित प्रश्न
Write the names and functions of three parts of human nervous system in which it is divided.
What does the central nervous system in humans consist of? What is the job of the central nervous system?
The life processes in humans are controlled and regulated by :
(a) reproductive and endocrine systems
(b) respiratory and nervous systems
(c) endocrine and digestive systems
(d) nervous and endocrine systems
Fill in the blank:
Peripheral nervous system consists of _________.
What are sense organs?
Compare the nervous system and the endocrine system.
Where is this located?
Effector organs
Plants do not have any nervous system but yet, if we touch a sensitive plant, some observable changes take place in its leaves. Explain how could this plant respond to the external stimuli and how it is communicated.
What are thermoreceptors?
The brain, the spinal cord and nerves form the nervous system.
