The brain and eye: Homeostasis and response: Biology: GCSE (9:1)
Cards (18)
- BrainA mass of nerve tissue consisting of billions of interconnected neurones that acts as the main control centre of the nervous system
- Cerebral cortexThe outer region of the cerebrum that contains sheets of nerve cells controlling memory, consciousness, language and intelligence
- CerebrumThe main part of the brain that is divided into a right hemisphere and a left hemisphere
- CerebellumA large structure of the hindbrain that controls fine motor skills including balance and movement
- HindbrainThe lower part of the brainstem that include the cerebellum
- MedullaThe base of the brainstem which controls heartbeat and breathing
- EyeA sense organ that detects light and is responsible for vision
- ScleraThe white outer part of the eye that provides protection
- CorneaThe transparent tissue that covers the front of the eye, it controls and focuses the entry of light into the eye
- IrisThe coloured part of the eye behind the cornea that regulates the size of the pupil
- PupilThe dark opening in the centre of the pupil, it varies in size to regulate the amount of light that reaches the retina
- LensA transparent structure located behind the iris that focuses light on the retina at the back of the eye
- Ciliary musclesMuscles which work with the suspensory ligaments to adjust the shape of the lens in order to focus on near or far objects
- Suspensory ligamentsLigaments which work with ciliary muscles to adjust the shape of the lens in order to focus on near or far objects
- RetinaThe light-sensitive surface at the back of the eye containing light and colour receptor cells
- Optic nerveThe nerve that carries neural impulses from the receptor cells of the eye to the brain
- Light receptor cellsAlso called rod cells, these are highly light sensitive and are responsible for vision in dimly-lit conditions
- Colour receptor cellsAlso called cone cells, these can detect a wide spectrum of light and are responsible for the perception of colour