Beyond the Senses
Describe the central nervous system in human beings under the following heads:
(i) Regions included
(ii) Three functions of any one region
Draw a section of the microscopic structure of human retina and label any six parts in it.
Name the structure that determines the eye colour in humans. What is the normal function of this structure?
Name the point of sharpest vision and the point of no vision in human eye.
Draw the basic structure of a neural synapse and label the following parts in it Presynaptic cell, Postsnaptic cell, Vesicles, Neurotransmitter, Receptor, Synaptic cleft.
Give any two differences between chemical synapses and electrical synapses.
Draw a diagram of human brain and label on it the following of its parts:
(i) Cerebrum (ii) Meninges
(iii) Medulla Oblongata (iv) Cerebellum