Pain
 Nociceptors
 Substance P
 Superficial skin, joint capsules, periostea, blood vessels,
deep tissues, visceral organs
 Large receptive field
 Sensitive to three things
 Referred pain
Fast Pain
 Pricking pain
 Carried by myelinated fibers
 Injections/deep cuts
 Specific location
Slow Pain
 Burning/aching pain
 Carried by unmyelinated fibers
 Nonspecific location
Temperature
 Thermoreceptors
 More cold than hot
 Adjust quickly to differences
Tactile Receptors
 Free nerve endings (epidermis), root hair plexus (hair
shafts), Merkel’s disks (deep epidermal), Meissner’s
corpuscles (fine touch), lamellated corpuscles (deep
pressure), Ruffini Corpuscle (deep dermis)
Baroreceptor
 Pressure changes
 Distensible organs (GI, Cardiac, Resp., Urinary)
 Quickly adapt
Chemical Detection
 Chemoreceptors
 Medulla, carotid bodies, aortic bodies
Activity
 Make a pop through picture.
 Draw label (location of each type of general sense receptor) the
human body. Make sure the labels are towards the edge of the
paper.
 After you are done labeling, cut along the edges of your label
 Use a second piece of paper and staple it to the back of your
picture
 Under the labels, give a function of each type of receptor
 Color code each type of receptor