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59 Cards in this Set

  • Front
  • Back
Sensory Receptors do what?
They detect changes in the enviroment and stimulate neurons to send nerve impulses to the brain
What are the 5 main types of receptors?
Chemoreceptor, pain receptors, theromoreceptors, mechanoreceptors and photoreceptors
Chemoreceptors do what?
they are sensitive to change in a chemical condition
Pain receptors do what
They detect tissue damage
change in temperature
change in pressure or movement
change in light vision
What is a sensation?
It is a feeling that occurs when the brain interprets sensory impulses.
When sensory impulses are sent at decreasing rates until the receptors fail to send impulses?
This is know as adaption if there is a change in strength of the stimulus then the impulse will be resent
Olfactory organs means what?
Smell organs
What type of the receptors are the olfactory receptors?
Where are chemoreceptors located
in the upper nasal cavity
What are the organs of taste?
The taste buds
Taste buds are located within bumps called?
Where are papillae scattered?
Through out the mouth and the pharynx.
The ear is made up of what?
The external, middle and the inner
What does the ear do?
provides us with hearing and equilibruium
The outer ear consist of the what?
auricle/ or pinna
What does the auricle or pinna do?
it collects sound
Once the sound is collected it travels down the what?
External auditory meatus.
Once the sound travels down the External auditory meatus where does it go?
toward the middle ear
The middle ear begins with the eardrum called the?
tympanic membrane
The eardrum is an air filled space or a?
tympanic cavity
The eardrums typanic cavity houses the tiny bones called the ?
auditory ossicles
What are the name of the three bones that the middle ear contains?
malleus, incus and the stapes
What opening does the last of the three bones push against?
oval window
The inner ear is made up of what?
a membranous labyrinth inside and a osseous(inner)labyrinth
What is the fluid that is between the two labyrinths?
what is the fluid in side the inner labyrinth called?
Path of vibration: What funnels the sound as air waves into the external auditory?
The oricle
Path of Vibration: What channels the air waves into the eardrum.
the tympanic membrane
Path of Vibration: The tympanic membrane vibrates converting the impulses into?
Mechanical waves.
Path of vibration:What moves the three auditory ossicles which are in order?
The mechanical waves
What are the three auditory ossicles?
Malleus incus stapes
Path of vibration: Moving the three auditory ossicles will amplify the sound. What is the last one?
The stapes
Path of vibration: What last auditory ossicle pushes on the oval window?
the stapes
The sense of equilibrium consist of two parts what are they?
Static and dynamic
What are the accesory organs of Vision?
The eyelids
What is the thin smooth muscle that adjusts the amount of light entering the pupil?
The iris
The hole in the center of the iris is the?
What are the two kinds of modified neurons of the visual receptors?
The rods and the cones.
What modified neuron is elongated and responsible for black and white vision?
The rods
What modified neuron is blunt shaped and responsible for color vision?
the cones
Somatic senses are associated with what?
receptors in the skin muscles joints and the viscera
Somatic senses include the senses of
touch and pressure temperature and pain
The sense fo touch and pressure are derived from 3 kinds of receptors?
sense mechanical forces and deformor displaced tissue
Whjat sensory nerve fibers in the epithelial tissues are associated wiht touch and prressure?
Free endings
What are Meissner's corpuscles?
oval masses of connective tissue that surround 2 or more nerve fibers they are abundant on hairless parts
What are pacinian corpuscles?
connective tissue fibers and cells -in the deeper tissues and muscle tendons and joints ligaments- responds to heavy pressure
Some free nerve endings are
heat receptors, cold receptors and pain receptors both heat and cold adapt quickly pain adapts slowly
Deficiency of oxygen can trigger what receptor?
what pain may fell like it is coming from another part of the body?
Nerve fibers that conduct impulses away from pain receptors are?
Acute pain fibers and chronic pain fibers
What determines the intensity of the the pain?
The cerebral cortex
What makes one aware of pain?
the thalamus
Window of the eye that helps focus entering light rays is the?
The white portion of the eye?
The iris seperates the anterior from the
What depresson in the center of the retina produce the sharpest vision?
The fovea