The document discusses the nervous system and locomotor system. The central nervous system contains the brain and spinal cord. The brain controls the nervous system and has three main parts - the cerebrum, cerebellum, and brain stem. The spinal cord runs down the spine and controls reflex actions. The locomotor system includes the skeleton, joints, and three types of muscles that work with the skeleton to enable movement.

1. UNIT 1:THE
NERVOUS SYSTEM

2. THE NERVOUS SYSTEM
The central
nervous system
• Central: Brain and
Spinal cord.
• Peripheral: Nerves
(senses)→ neurons
The locomotor
system
• The skeleton
• Joints
• Muscles

3. THE CENTRAL NERVOUS SYSTEM
Brain: controls the nervous system. It is
protected by the skull or cranium.
Brain has three main parts:
- Cerebrum
- Cerebellum
- Brain stem
cerebrum
cerebellum
Brain stem

4. THE CENTRAL NERVOUS SYSTEM
Spinal cord: is made up of nerve tissue and
runs from our brain down our spine
It is protected by the vertebrae.
It controls our reflex actions.

5. THE LOCOMOTOR SYSTEM
 The skeleton: made up of three types of bones
- short
- flat
-long
 Joints:
- fixed
- semi-flexible
- flexible
 Muscles:
- Skeleton
- Smooth
- Cardiac

6. KEY WORDS
 Cell
 Brain
 Skull
 Cerebrum
 Cerebellum
 Brain stem
 Spinal cord
 Reflex actions
 Neurons
 Nerves
 ….