The diagram given below is a representation of a certain phenomenon p

1.	The diagram given below is a representation of a certain phenomenon pertaining to the nervous system. Study the diagram and answer the following question:(i) Name the phenomenon that is being depicted. (ii) Give the technical term for the point of contact between the two nerve cells. (iii) Name the parts 1, 2, 3 and 4. (vi) Write the functions of parts 5 and 6. (v) How does the arrangement of neurons in the spinal cord differ from that of the brain ?
Answer» (i) Reflex action (ii) Synapse (iii) 1- Sensory neuron 2- Dorsal root ganglions 3-White matter 4- Gray matter (iv) 5- It receives messages from sensory neuron and passes it to the motor neuron. 6- It passes impulses from the main nervous system to the effector organ. (v) In spinal cord. the gray matter is inside and white matter is outside around it. In brain, gray matter is outside and white matter is inside.

The diagram given below is a representation of a certain phenomenon pertaining to the nervous system. Study the diagram and answer the following question:(i) Name the phenomenon that is being depicted. (ii) Give the technical term for the point of contact between the two nerve cells. (iii) Name the parts 1, 2, 3 and 4. (vi) Write the functions of parts 5 and 6. (v) How does the arrangement of neurons in the spinal cord differ from that of the brain ?

Answer»

(i) Reflex action

(ii) Synapse

(iii)

1- Sensory neuron

2- Dorsal root ganglions

3-White matter

4- Gray matter

(iv) 5- It receives messages from sensory neuron and passes it to the motor neuron.

6- It passes impulses from the main nervous system to the effector organ.

(v) In spinal cord. the gray matter is inside and white matter is outside around it. In brain, gray matter is outside and white matter is inside.