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The locomotor system

The locomotor system.

Smell and breathing.

Taste and the mouth

The sight

The sight. How do we see?

Nervous system practice

Touch

The Skin

How do we feel?

  • Skin layers:

    • Epidermis (provides protection, gives our skin its colour)

    • Dermis (middle layer. supports the epidermis and contains many nerve endings)

    • Fatty tissue ( keeps us warm, provides nutrients to the other to layers)

  • Nerve endings (sensory nerve on our skin that detects information, produces nerve impulses and transmits them to the brain through the sensory nerves)

Hearing

The five senses: hearing

How do we hear?

  • Sound waves --> eardrum (the eardrum vibrates)

  • The small bones inside the ear vibrate.

  • The Cochlea detects the vibrations and produces nerve impulses.

  • The Auditory nerve transmits the nerve impulses to the brain.

  • The brain interprets the information.

The nervous system

The nervous system.

Word processing

Word processing.

The Internet

The computer

Computers

History. Evolution. 

How do they work?

Parts of a computer.

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U1 Interaction

Interaction 

  • The nervous system
    • The brain
      • Parts (picture)
        • Cerebrum [it's the largest and most complex part of the brain. It controls our intelligence, memory, personality, emotion, speech and the ability no feel and move.]
        • Cerebellum [it's responsible for balance, movemen and coordination.]
        • Brainstem [it connects the brain to the spinal cord. It controls some involuntary actions (breathing, heartbeat)]
    • The spinal cord
    • Nerves
      • Types of nerves:
        • Sensory nerves
        • Motor nerves
    • Nerve cells
      • Parts
        • Dentrites [they are thin fibres. they transmit messages and create electrical signals (nerve impulses)]
        • Cell body [or nucleus. It controls the nerve cell and creates nerve impulses]
        • Axon [It transmits the nerve impulses]
        • Synapse [it's the space between nerve cells]
  • The five senses
    • The Skin (skin layers)
    • Hearing. How do we hear?, parts of our ears
    • Sight. How do we see?, parts of our eyes.
    • Taste and smell.

  • The locomotor system
    • The skeletal system
    • The muscular system

Unit 0

U0.

Covid Health meassures

Tecnology: the computer, the Internet, Word processing.