B10 Flashcards
Central nervous system
Part of the nervous shstem where information is processed. It is made up of the barin and spinal chord
Cerbral cortex
Region of the brain associated with consciousness, memory and language
Cerebellum
Region of the brain concentrated with coordinating muscular activity and balance
Ciliary muscles
Muscles that contract and relax to change the shape of the lens of the eye
Coordination centres
Areas that receive and process information from receptors
Effectors
Areas that bring about responses in the body
Homeostasis
Regulation of the internal conditions of a cell organism to maintain optimum conditions for function, in response to internal and external changes
Hyperopia
Long sightedness where the rays of light from distant objects can be focused clearly on the retina but the rays of light from close objects are not focused amd the objects appear blurred
Medualle
Region of the brain concentrated with unconscious activities such as controlling the heart rate and breathing rate
Motor neurones
Carry impulses from the central nervous system to the effector organs
Myopia
Short sightedness where rays of light from close objects are bought into focus on the retina but distant objects appear blurred as the light is focused in front of the retina
Nerve
Bund,e of hundreas or even thousands of neurones
Neurones
Basic cel,s of the nervous system that carry minute electrical impulses around the body
Receptors
Cells that detect stimuli-changes in the internal or external environment
Reflex arcs
Bring about a reflex action. They involve the sense organ, sensory neurone, relay neurone and motor neurone
