Chaper Sensory Receptors/Sensation Flashcards
What do internal sensors help do
Maintain homeostasis
Senses transmit sensory information in the form of ……. to the brain
Electrochemical impulses
What are sensory receptors?
Nerve endings in cells that detect sensory information they then initiate neural impulses.
What is it called when neural impulses arrive at the cerebral cortex
Sensation
What happens when we see objects
Neural impulses begin in the optic nerve sent to the visual areas of the cerebral cortex
What happens when we hear sounds
Neural impulses begin an auditory nerve of that year and sent to the area of the brain that perceive sound
What is perception
The unique interpretation of sensory information to the cerebral cortex and differing on the individual
What is it called when the brain filters out and significant information
Sensory Adaptation
What are sensory receptors
Specialized cells or neuron endings that detect stimuli
What are four different sensory receptors
Photoreceptors, Chemoreceptors
Mechanoreceptors
Thermoreceptors
What is a fluid filled hollow ball about 2.5 cm in diameter
Human Eye
Incoming light energy focusses on what
The photoreceptors of the retina
Name three layers of the eye
1) External
2) Intermediate
3) Internal
Describe the external layer of the eye or called the Sclera
White tough and fibrous protective layer
Light enters which part of that Eye
The cornea
