Senses

General Senses

touch, temperature, pressure, and pain

Special Senses

taste, small, vision, hearing, and balance

5 kinds of receptors

chemoreceptors

pain receptors

thermoreceptors

mechanoreceptors

photoreceptors

chemoreceptors

changes in concentration of chemicals (taste and smell)

pain receptors

tissue/skin damage

thermoreceptors

changes in temperature

mechanoreceptors

changes in pressure /movement (touching, hearing, balance)

photoreceptors

changes in light (sight)

how does a sensation arise?

sensory receptor is set off, the brain projects the sensation back to the source through sensory projection adaptation

how is a sense of pain produced?

prostiglandins are released, the more released the more pain coming with it

types of pressure and touch receptors

free nerve endings

Meissner’s corpuscles

Pacinian corpuscles

merkels disk

hair follicle receptors

ruffinis corpuscles

free nerve endings

pain, Temp, touch, pressure

meissners corpucles

detect light touch

merkels disk

internal pressure and light touch

hair follicle receptor

detect movement of hair

ruffins corpuscles

deep pressure and streching of skin

pacinian corpuscles

deep pressure and vibrations

make sure you know what they look like/where they are in skin

what is the path of light through the eye?

cornea, ah, pupil, lens, vh, retina, photo receptors stimulated, optic nerve

What is the path of sound through the ear?

external auditory meatus, tympanic membrane, malleus, incus, Staples, oval window, vestibule, cochlea, hair cells stimulated, cochlear nerve

static equilibrium

position of the head (up or down)

dynamic equilibrium

movements of the 3 planes