Structure Of The Brain, Eye, And Ear

3 parts: Forebrian, Midbrain and Hindbrain

The full brain is the largest part of the brain and is responsible for complex cognitive functions. Its structure includes the cerebrum, thalamus and hypothalamus. It’s function is high or functions like thinking reasoning memory language and emotional processing.

The mid brain connects the brain parts. It plays a crucial role in motor movement, sensory processing and relaying information between the full brain and hind braid. It includes the tectum, tegmentum and cerebral peduncles. Its function is motor control processing visual and auditory information and regulating alertness and temperature.

My managers coordination balance and automatic functions like heart rate and the structure includes the cerebellum, pons, and medulla oblongata (which together forms part of the brainstem). It’s function is to regulate vital life sustaining functions, coordinates movement and balance and connects the brain to spinal cord.

Frontal lobe, Parietal lobe, Occipital lobe and Temporal lobe

Frontal lobe: it’s important for movement thinking initiation reasoning/judgement behaviour memory and speaking.

• Sclera coat (outer layer) • Choriod coat (middle layer) • Retina (inner layer)

• Cornea- clear, transparent part of the eye which lets light into the eye. It is curved so it allows light to approaching the eye to be bent towards the pupil. • Sclera- the white part of the eye that provides protection and structure. Function: protects the eye and maintains its shape.

• Choriod- contains blood vessels and supplies nur and oxygen for the retina. • Iris- coloured ring of muscle that controls the amount of light entering ur eye. • Ciliary body- controls shape of lens Function: provides nutrients for the eye, controls light entry by adjusting size of pupil and helps with lens focusing.

• Neural layer- contains photoreceptors that detect light • Pigmented layer- supports the photoreceptors and absorbs stray light. Function: converts light to electrical signals that are sent through the optic nerve and to the brain.

The retina

Light adaption (going from dark to bright)- the pupil gets smaller to let less light in, the rods turn off and the cones turn on. It takes a few seconds to a few minutes to readjust Dark adaption (going from bright to dark)- the pupil gets bigger, cones stop working well and then rodes slowly turn on. Takes up to 20-30 mins to adapt to full night vision.

Cones and rods

Help you see in dim or dark light, don’t rpdetect colour only black and white, very sensitive in light

Work best in bright light, detect colour, help see fine details

The rods are found around the edges of the retina. The cones are found in the centre of the retina.

The lens is a clear jellylike structure that its main job is to focus on light and changes it shape to see clearly at different distances.

A hole in the iris. Controls how much light enters your eye.

It’s important for knowing left and right sensation reading body orientation and sensory discriminatin

For your vision, visual reception and visual interpretation

Controls your balance coordination and fine muscle control

Understanding language, behaviour memory and hearing.

Consciousness, breathing, blood pressure, digestion, swallowing heartbeat, body temperature and alertness

A bundle of nerve fibres that allow your brains left and right hemispheres to communicate