Senses Flashcards
(32 cards)
General senses
senses that have receptors all over the body
Somatic senses
provide information about the body and environment
Visceral senses
provide information about the organs
Special senses
sense that have specialized structures and are in specific places in the body
Mechanoreceptors
respond to mechanical stimuli
Chemoreceptors
respond to chemicals
Photoreceptors
respond to light
Nociceptors
respond to pain
General senses
touch, pressure, pain,temperature, vibration, itch, and proprioception
Free nerve endings
receptors for the general senses
Touch receptors
free nerve endings enclosed by capsules
Merkel disks
superficial nerve endings that detect light touch and pressure
hair follicle receptors
body hair receptors that respond to light touch
Meissner corpuscles
touch recpetors
Ruffini corpuscles
deeper tactile receptors and continous pressure
Pacinian corpuscles
deepest touch receptors of the tendons and joints also vibrations and body possition
Righting relfex
keeps our body upright
Superficial pain
receptors are localized
Deep pain
not localized receptors
Referred pain
pain that is felt in a different part of the body then where it is actually coming from
Olfactory anatomy
Olfactory neuron dendrites have cilia that odorants can attach to. A signal is sent from the neuron to the olfactory bulb then to the brain
Neural pathway for olfaction
Olfactory axons > olfactory bulb > interneurons > olfactory tracts > olfactory cortex in temporal and frontal lobes
Prolonged odorant exposure effects
Feedback loop stops sending signal
Taste buds
structures on the tongue’s papillae, pharynx, palate, and epiglottis that contain sensory receptors for tastes