Biology the human nervous system Flashcards
Accommodation
Adjustments made by an animal’s nervous or sensory systems in response to continuously changing environmental conditions.
Central nervous system (CNS)
The central nervous system is made up of the brain and spinal cord where information processed.
Cerebellum
The part of the brain concerned with coordination and regulation of muscle activity and the maintenance of muscle tone and balance.
Cerebral cortex
The outer layers of the brain that is responsible for the control of voluntary movement and the senses of vision, hearing, touch, etc.
Ciliary muscles
The muscles supporting the lens in the eye that brings bout changes in the shape of the lens.
Coordination
The process involved in the reception of sensory information, the processing of that information and the subsequent response of the organism.
Cornea
A transparent layer of tissue that forms the front part of the eye over the iris and lens.
Homeostasis
The maintenance of constant internal body conditions.
Hyperopia
The clinical term for long-sightedness.
Iris
The pigmented ring of muscular tissue, lying between the cornea and lens, that controls the amount of light allowed to enter the eye.
Lens
A transparent structure in the eye responsible for directing light onto light-sensitive cells.
Motor neurone
Neurone that carries impulses from the central nervous system to the effector organ.
Myopia
The clinical term for short-sightedness.
Optic nerve
The nerve carrying impulses from the retina of the eye to the brain.
Pituitary gland
Small gland in the brain which produces a range of hormones controlling body functions.
