Card Set Information
quiz 2, anatomy and physiology
What are the 3 classes of sensory receptors?
What do sensory receptors do?
use sensory information to generate a reflex
detect stimuli from the outside
: sense (touch, taste, smell, hearing, vision)
detect stimuli from the inside
: blood pressure
specialized class of interoceptors
: muscle memory
changes in light
stimuli that distort plasma membranes
How do somatic sensations work?
stimulus > receptor > apharent > epharent > response
somatic sensation of pain:
conscious perception of a noxious stimuli
What body system does pain not occur in?
central nervous system
receptor for pain:
nocicpeter nerve ending
reaction threshold for pain:
highly variable among individuals
diversion of pain:
decrease in pain perception
surface of skin
mucous membrane of nasal cavity that includes the olfactory nerve
heightened sense of smell detection
less sophisticated sense of smell detection
without sense of smell
detects pheromones in the air
sits on hard pallete in the mouth
by-passes hypothalamus and goes straight to CNS
What are pheromones?
detectable chemicals that cause changes in animal behavior
scent glands, communication, reproduction
sense of taste
: taste buds
4 basic taste sensations:
importance of saliva:
lubricates food as it goes down
buffers stomach contents
helps dilute chemicals so they can be individually detected
specialized sense of hearing
uses sound waves
How is sound recepted?
sound wave enters external ear
waves hit ear drum and causes vibrations
motion travels from middle ear to vestibule
vibration hits fluid-filled sack and goes to cochlear nerve
nerve sends transmission to central nervous system
visual sensory receptors:
visual sensory stimulus:
made of elastic cartilage
hollow chamber filled with air
has bones and muscles that help send vibrations
external layer of the eye:
cornea and sclera
middle layer of eye:
ciliary body & muscles, lense, iris, choroid
internal layer of eye:
retina (light processing)
translucent coating behind the retina
what does field of vision depend on:
how they eye is set on the skull
aka sensory neurons
receive information from the outside and sends them to other neurons so the body can produce a response
aka motor neurons
receive info from other neurons and sends that information to effectors (muscles, glands) which produce a reponse
perception of frontal cortex:
perception of hypothalmus and amygdala:
perception of hippocampus:
What part of the ear contains fluid?
What bones are in the ear?
What part of the eye detects color?
black and white
What part of the eye lets light in?
What controls amount of light?
translucent coating behind the retina:
Which sense organs can be coupled together?