Ears and mouth
cochlea
colored portion of the eye
iris
the part of the brain that regulates automatic functions like breathing and heart rate
brain stem
sensitive to chemical changes (taste buds, smell, etc)
chemoreceptors
this includes brain and spinal cord
central nervous system
the waxy substance in ear
cerumen
the structure that is used for light vision
cones
biggest part of brain, that interprets your 5 senses and is divided into 2 hemispheres
cerebrum
these react to pressure interaction (touch, pressure, itching, etc)
mechanoreceptors
this carries impulses between the CNS and PNC (cranial and spinal nerves)
the human nose can detect more than _ many smells
6 000 !!!
the white part of the eye
sclera
the part of your brain that maintains your balance, posture, coordination, and fine motor skills
cerebellum
sensitive to light changes
photoreceptors
this system prepares the body for "fight or flight"
sympathetic nervous system
structures on tongue that contain taste buds
papillae
the structure used for dim vision
rods
located at the end of each axon, allows the impulse to travel from one neuron to another
neurotransmitters
these respond to temperature fluctuation
thermoreceptors
counteracts the actions of the sympatic nervous system
parasympathetic nervous system
the name for the eardrum
tympanic membrane
the gland that produces tears
lacrimal gland
the part of a neuron that carries impulses away from the cell body
axon
detect pain
nocireceptors
what is the difference between afferent and efferent nerves?
afferent (sensory) carries messages from parts of the body
efferent (motor) carries messages from brain and spinal cord