1. Human Nervous system Central nervous system Peripheral nervous system
Structure of neuron
Physiology of nervous system

2. Human nervous system

3. Nervous system – division

4. Central nervous system
Brain
Spinal cord

5. Brain

6. Brain

7. Ventricles of brain

8. Brain

9. Brain
C T H

10. Brain-Forebrain
Cerebrum
Thalamus
Hypothalamus

11. Brain- cerebrum Largest part of the brain
Composed of right and left cerebral hemisphere
Separated by longitudinal cerebral fissure
Connected by corpus callosum
Outer region of cerebrum-grey matter-cerebral cortex
Inner region of cerebrum-white matter-cerebral medulla

12. Cerebrum

13. Brain-Forebrain
Cerebrum
Thalamus
Hypothalamus

14. Brain- thalamus
Main center of coordination for sensory and motor signalling
Relay station for sensory and motor impluses between cerebrum and other parts of the brain.

15. Brain-Forebrain
Cerebrum
Thalamus
Hypothalamus

16. Brain-hypothalamus Lies at the base of thalamus Regulates temperature
thirst
hunger
emotions
ADH & oxytocin secretion
Controls pituitary gland
Controls sleep wakefulness, food intake, blood pressure, heart rate

17. Brain

18. Brain-midbrain Located between forebrain and hindbrain
Dorsal surface-superior and inferior corpora bigemina
Round lobes-corpora quadrigemina
Canal –cerebal aqueduct
Anterior part-visual reflex
Posterior part-auditory reflex

19. Brain C P M

20. Brain-Hind brain
Cerebellum
Pons varolii
Medulla oblongata

21. Hind brain- cerebellum
Large part of hind brain
Located above medulla oblongata, below cerebral hemisphere
It helps in co-ordination of muscular activities
It helps in maintenance of posture and equilibrium

22. Hind brain- pons varolii
Band of nerve fibre that lies between medulla oblongata and midbrain
Connects the lateral part of cerebral hemisphere forming a bridge.
Co-ordination of activities of eye and ear
Equilibrium and respiration regulation.

23. Hind brain- medulla oblangata
Posterior part
Located beneath the cerebellum
Lower end extends in the form of spinal cord.
Leaves the skull through foramen magnum.
It helps in regulation of respiration, heartbeat, blood pressure, circulation, peristaltic movement etc.
Salivation, vomiting, sneezing & coughing

24. Central nervous system
Brain
Spinal cord

25. Spinal cord
Tubular structure connected with medulla oblongata of brain
Situated in the neural canal of the vertebral column, covered by meninges.
Contains CSF
Outer white matter and inner grey matter.
Helps in conduction of impulses to and from the brain.
It is the centre of spinal reflexes.

26. Neurons Vs Nerves
A neuron is an individual cell, whereas, a group of neurons form a nerve. There are two types of neurons sensory and motor neurons; while there are three types of nerves afferent, efferent and mixed nerves. Nerves are found in the peripheral nervous system, while neurons are found in the brain, spinal cord and the peripheral nerves. Neurons conduct nerve impulses, while nerves transmit information to various parts of the body.

27. Types of nerves
3 types of nerves - sensory nerves, motor nerves and mixed nerves. Sensory nerves also known as afferent nerves, carry impulses from sensory receptors towards the brain. Motor nerves also known as efferent nerves, carry impulses away from the brain to muscles and glands.

28. Spinal reflexes
 an automatic and often inborn response to a stimulus that typically involves a nerve impulse passing inward from a receptor to the spinal cord and then passing outward from the spinal cord to an effector (such as a muscle or gland) without reaching the level of consciousness and often without passing to the brain

29. Nervous system – division

30. Peripheral nervous system
It consist of sensory and motor nerves.
Includes cranial nerves and spinal nerves.
It has two divisions
Autonomic nervous system
Somatic nervous system

31. Nervous system – division

32. Autonomic nervous system
The part of the nervous system responsible for control of the bodily functions not consciously directed, such as breathing, the heartbeat, and digestive processes.
The autonomic nervous system (ANS) contains two subdivisions: the parasympathetic (PSNS) and sympathetic (SNS) nervous systems.

33. parasympathetic and sympathetic nervous system

34. Nervous system – division

35. Somatic nervous system
The somatic nervous system (voluntary nervous system) is the part of the peripheral nervous system associated with skeletal muscle voluntary control of body movements.
consists of afferent nerves or sensory nerves, and efferent nerves or motor nerves.

36. Structure of neuron

37. Neurotransmitters
a chemical substance which is released at the end of a nerve fibre by the arrival of a nerve impulse and, by diffusing across the synapse or junction, effects the transfer of the impulse to another nerve fibre, a muscle fibre, or some other structure.

38. Physiology of nervous system