Control And Coordination Flashcards
Define Homeostatis
The maintenance of the temperature, pH and concentrations of ions, glucose, water and carbon dioxide for the bodies internal environment
Stimulus-response model
STIMULUS >> RECEPTOR (sense organs: eyes, ears, tongue, nose) >> CONTROL CENTRE (message in form of nerve impulse travels to central nervous system) >> EFFECTOR (muscles or glands which their response varies depending on the original stimuli) >> RESPONSE
Multicellular organisms
Multicellular organisms >> systems >> organs >> tissues >> cells
Central nervous system
Brain and spinal cord
Peripheral nervous system
The nerves that connect the central nervous system to the rest of the body
Three types of neurones?
SENSORY NEURONES: - carry the impulse generated by the stimulus to the central nervous system INTERNEURONES: - carry the impulse through the central nervous system MOTOR NEURONES: - take the impulse to effectors such as muscle glands
Neuron diagram
Eye diagram
ear diagram
Compression or rarefraction?
COMPRESSION - air particles are pushed together
RAREFRACTION - air particles are spread out
Sound and water waves
WAVE LENGTH - distance between any two crests or troughs or any two corresponding points on neighbouring waves
AMPLITUDE - the maximum distance of a wave that each particle moves away from its usual resting position
Electromagnetic spectrum diagram
Convex lens diagram
Concave lens diagram
Reflecting angles and rays
INCIDENT RAY - The ray of light that strikes the surface
INCIDENT ANGLE - angle between the incident ray and the normal
THE NORMAL - the line perpendicular to the surface at the point of incidence
REFRACTED RAY - the ray of light that reflects off the surface
ANGLE OF REFRACTION - the angle between the rfracted ray and the normal
