CENTRAL - ......... nervous system consist of brain and spinal cord, CRANIAL NERVES - connecting the brain to the sensory and internal organs, SPINAL NERVES - connecting the spinal cord to the skeletal muscle, STIMULI - nerves system detect ........., IMPULSES - nerves system send information on form of .........., VOLUNTARY ACTION - conscious actions and conducted under one's will, INVOLUNTARY ACTION - occur immediately without conscious control or prior thought, RETINA - Layer containing photoreceptors which detects light and produce nerve impulses, BLIND SPOT - Part of the retina which is not sensitive to light as there are no photoreceptor , IRIS - the coloured part of the eye which controls the size of the pupil, ROD CELL - sensitive to different light intensities but not sensitive to the colour of light, COCHLEA - detects and and converts sound vibration into nerve impulses, EARDRUM - vibrates according to the frequency of the sound waves received and transfer the vibration to the ossicles, PAPILLAE - tiny nodule on the surface of the tongue, SALIVA - When food is chewed, part or all the chemical substances in the food dissolve in the ......., SKIN - the largest sensory organ in human body, OPTICAL ILLUSION - occurs when an object that is seen differs from its actual state, TROPISM - directional response of plant to stimuli such as light, water, gravity and touch, PHOTOTROPISM - Response of plant towards light, NASTIC MOVEMENT - the response towards a stimulus such as touch but does not depend on the direction of the stimulus,

NERVOUS SYSTEM

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