Human Nervous System

Parts of the Nervous System

  1. Brain
  2. Spinal Cord
  3. Nerves - Sensory and Motor Nerves

Nervous System Diagram


The Neurone


The Central Nervous System

  1. Cerebrum (Forebrain) - the largest section of the brain, which lets us think, interpret sensory messages, carry out voluntary muscle movements, remember and have consciousness
  2. Cerebellum (Midbrain) - helps us to keep our balance, and have repetitive muscle control
  3. Medulla Oblongata (Hindbrain) - control the vital functions of heartbeat, breathing and blood pressure

The Peripheral Nervous System


A Reflex Arc

Reflex Arc Diagram


Senses

  1. Touch
  2. Smell
  3. Taste
  4. Sight
  5. Hearing
SENSE SENSE ORGANS STIMULUS
Touch, pressure, heat, cold, pain Skin, joints, internal organs Internal or external force or temperature
Smell Nose Airborne chemicals
Taste Taste buds on tongue Ingested chemicals
Sight Eyes Light
Hearing Ears Sound


The Eye

The Path of Light through the Eye

Cornea

Arrow

Aqueous Humour

Arrow

Pupil

Arrow

Lens

Arrow

Vitreous Humour

Arrow

Retina

Functions of the Parts of the Eye

Eye Diagram


Light-Sensitive Sense Receptors - Rods and Cones


Vision


The Ear

Path of Sound through the Ear

OUTER EAR
Pinna

Arrow

Auditory Canal

Arrow

Eardrum

Arrow

MIDDLE EAR
3 Earbones or Ossicles

Arrow

Oval Window

Arrow

INNER EAR
Cochlea

Functions of the Parts of the Ear

Ear Diagram

OUTER EAR

MIDDLE EAR

INNER EAR


Pitch and Amplitude of Sound

Other Features of the Ear



Previous Topic Random Topic Next Topic
Qld Science Teachers Astronomy Biology Chemistry Geology Physics