(iii) Nervous system: Structure of Neuron; central, autonomous and peripheral nervous system (in brief); brain and spinal cord; reflex action and how it differs from voluntary action. Sense organs โ Eye: Structure, functions, defects and corrective measures: Ear: Parts and functions of the ear.
- Parts of a neuron.
- Various parts of the external structure of the brain and its primary parts: Medulla Oblongata, Cerebrum, Cerebellum, Thalamus, Hypothalamus and Pons; their functions.
- Reference to the distribution of white and gray matter in Brain and Spinal cord.
- Voluntary and involuntary actions โ meaning with examples.
- Diagrammatic explanation of the reflex arc, showing the pathway from receptor to effector.
- A brief idea of the peripheral and autonomic nervous system in regulating body activities.
- Differences between natural and acquired reflex.
- External and Internal structure and functions of the Eye and Ear and their various parts.
- A brief idea of stereoscopic vision, adaptation and accommodation of eye.
- Defects of the eye (myopia, hyperopia/hypermetropia, presbyopia, astigmatism and cataract) and corrective measures (diagrams included for myopia and hyperopia only).
- The course of perception of sound in human ear.
- Role of ear in maintaining balance of the body.