bio general senses

general sense

touch, temperature, pain, pressure, proprioception

general senses detect

changes in internal and external environment and help maintain homeostasis

mechanoreceptors, thermoreceptors, nociceptors

turn stimuli into electrical signals that travel to the brain for interpretation 

mechanoreceptors

detect touch, pressure, vibration

thermoreceptors

detect temperature changes

nociceptors

detect pain from heat, cold, injury, chemical irritation

Meissner’s (tactile) corpuscles

detect light touch and texture

Merkel discs 

detect steady pressure and fine detail

Ruffini (bulbous) corpuscles 

detect skin stretch 

Pacinian (lamellar) corpuscles

detect deep pressure and vibration

nociceptors found

skin, muscles, joints, and internal organs

activates cold receptors

between 10 C and 35 C (50 F - 95 F)

activates warm receptors

between 30 C and 45 C (86 F-113 F)