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1. The Anatomy and Physiology of
The Nervous System

2. By:
Valentina Manjarres
Juliana Manjarres
Silvia Cuesta
Genesis Bernier

3. Organs
CNS:
 Brain
 Spinal Cord
PNS:
 Nerves

4. THE NERVOUS SYSTEM: A system responsible
for coordinating all the activity of the body.
THE BRAIN
THE SPINAL CORD
THE NERVES
THE SENSES

5. CENTRAL NERVOUS SYSTEM (CNS)
PERIPHERAL NERVOUS SYSTEM (PNS)
The Nervous System can be
subdivided into the:

6. CENTRAL NERVOUS SYSTEM:
Controls everything in the body.
 The CENTRAL NERVOUS SYSTEM is made of the
brain and the spinal cord.

7. BRAIN
 It is one of the largest organs in the body, and
coordinates most body activities.
 It is the center for all thought, memory, judgment,
and emotion.
 Each part of the brain is responsible for controlling
different body functions, such as temperature
regulation and breathing.

8. THE THREE MAJOR PARTS
of the BRAIN
1. THE CEREBRUM
2. THE CEREBELLUM
3. THE BRAIN STEM

9. THE CEREBRUM:
largest part of the brain
The cerebrum controls:
 Your thinking
 Your Memory
 Your Speaking
 Your movement & identifies the information
gathered by your sense organs.

10. LOBES OF CEREBRUM

11. LOBES OF CEREBRUM
 1. Frontal lobe: Most anterior portion of the
cerebrum, controls motor function, personality, and
speech
 2. Parietal lobe: The most superior portion of the
cerebrum, receives and interprets nerve impulses
from sensory receptors and interprets language.
 3. Occipital lobe: The most posterior portion of
the cerebrum, controls vision.
 4. Temporal lobe: The left and right lateral
portion of the cerebrum, controls hearing and smell

12. THE CEREBELLUM:
Is below & to the back of the cerebrum
• The cerebellum controls your :
BALANCE & POSTURE
 Located beneath the posterior part of the cerebrum
 Aids in coordinating voluntary body movements and
maintaining balance and equilibrium
 Refines the muscular movement that is initiated in the
cerebrum

13. THE BRAIN STEM
 Connects the brain to the spinal cord.
 The nerves in the brain stem control your:
 HEARTBEAT
 BREATHING
 BLOOD PRESSURE

14. Spinal Cord
 Runs through the vertebral canal
 Extends from foramen magnum to 2nd lumbar
vertebra
 Regions
 Cervical
 Thoracic
 Lumbar
 Sacral
 Coccygeal
 Gives rise to 31 pairs of spinal nerves - all are mixed
nerves

15. PERIPHERAL NERVOUS
SYSTEM
 IS COMFORMED BY ALL THE NERVES

17. Nerves

18. NERVES
A bundle of fibers that uses electrical and chemical
signals to transmit sensory and motor information
from one body part to another. The fibrous portions of
a nerve are covered by a sheath called myelin and/or a
membrane called neurilemma

19. Meninges
 Dura mater: outermost
layer; continuous with
epineurium of the
spinal nerves
 Arachnoid mater: thin
and wispy
 Pia mater: bound
tightly to surface

20. NEURON
The cells that make up the nervous system are called
neurons. Long, stringy neurons are perfect for
carrying the electrical messages that are the
"language" of the nervous system.
Contents

21. VERY IMPORTANT INFO
 Nerves send messages to everything from the brain.
If there was no nervous system, you're heart
wouldn't be told to beat, your legs wouldn't be told
to walk and your lungs wouldn't be told to expand
an, collapse.
 Things wouldn't be able to send messages to the
brain either, such as taste buds (no taste) skin, (no
feeling,) eyes (no sight) and so on.

22. VIDEO

23. THANKS !!