Senses Flashcards
Examples of Autonomic Reflux
pupil constrics on both sides even if light is only shined in one eye
Exteroceptors
Detect stimuli from outside the body
Interoceptors
Detect stimuli from inside the body
Proprioceptors
Detect changes in stretch in joint tissues
This is what allows you to touch your nose with your eyes closed
Mechanoreceptors
Respond to touch, pressure, vibration, itch, and are also involved with hearing and equilibrium
Thermoreceptors
Respond to change in temperature
Photoreceptors
Respond to light stimuli
Chemoreceptors
Respond to blood chemistry changes
Nocireceptors
Respond to painful stimuli
Adaptation in Sensory Receptors
Decreased sensitivity to constant stimulus
Not noticing a smell after prolonged exposure
Types of Sensory Receptors
Nocireceptors Chemoreceptors Mechanoreceptors Photoreceptors Thermoreceptors Proprioceptors Interoceptors Exteroceptors
Sensation
Awareness of a change in external environment
Perception
Conscious interpretation of stimuli
Layers of the retina
Pigmented Layer
Neural Layer
Pigmented Layer of Retina
Absorbs light, prevents it from scattering
Neural Layer of Retina
Photoreceptors here transduce light to nerve signal
Function of Rods
Activated by dim light
Provide low acuity, non-color periphreal vision
Function of Cones
Activated by bright light
Provide high acuity color vision
Pathway of light into eye
Enters Cornea Aqueous Humor Lens Vitreous Humor Neural Layer of Retina Photoreceptors
Where is light refracted
At Cornea and entering and leaving Lens
Function of Cochlea
Transduction of soundwaves to sensory signals
Function of semicircular canals
Involved with dynamic equilibrium (Specifically angular acceleration)
Function of Vestibule(utricle and saccule)
Detect static equilibrium and linear acceleration
Receptors for hearing and equilibrium
Hair cells –> Mechanoreceptors
