The document discusses the major organs of the body, focusing on the brain as the control center that receives, integrates, stores, and retrieves information to send to other parts of the body. It describes the brain as being protected by the skull and composed of neurons that carry electrical signals. The brain has three main parts - the cerebrum, cerebellum, and medulla - with the cerebrum controlling voluntary movements and senses, the cerebellum controlling balance and coordination, and the medulla connecting the brain to the spinal cord and controlling involuntary functions like breathing and heart rate.

1. Major Organs of the
Body
Part 1-Brain
Grade 4

2. Your body is carefully organized
to carry out all your life activities.
The organs systematically work
together to keep you alive and
active. Each organ plays a specific
role related to your health and
development.

3. Let’s watch this video!

4. It is the control center of your body.
1. Brain
It is able to receive, integrate, store and
retrieve information.
It sends information to the other parts
of the body.

5. The brain was protected by the skull.
It is composed of cells called neurons, which
carry electrical signals called impulses.

6. The brain has three connected parts:
Cerebrum
Cerebellum
Medulla
It is the largest part of the brain. It
controls voluntary movements
and detects touch, light, sound,
odor, taste, pain, heat and cold.
It receives sensory impulses
from the muscles and joints.
It controls balance, posture,
and coordination.
It connects the brain to the spinal
cord. It controls your blood
pressure, heart rate, involuntary
breathing, and some other
involuntary activities.

7. Let’s do this!

8. Thank you!