15 Somatic Senses 1. Sensory Nerve Fibers Common in epithelial tissues Are associated with touch and pressure
16 2. Meissner’s Corpuscles Small masses of connective tissueLocated in hairless portions of the skin (lips, fingertips, palms, soles, nipples, external genitalia)Interpret light touch
17 3. Parcinian Corpuslces Large structures of connective tissue Located in deep tissue layers like ligaments and tendonsRespond to heavy pressure
18 Temperature Senses1. Warm Receptors - nerve endings that respond to warmer temperatures (sensitive above 77°, unresponsive above 113°F)2. Cold Receptors - nerve endings that respond to colder temperatures (sensitive between 50°F and 68°F)
25 Regulation of painPain is interpreted by the Cerebral Cortex in the brain.Three types of neuropeptides that inhibit pain: serotonin, enkephalins, endorphins.Natural brain chemicals can be mimicked by drugs such as morphine.