1. Special and General Senses

2. Senses General Senses Temperature Pain Touch pressure Vibration proprioception Special Senses Smell Taste Balance Hearing vision

3. General Senses Pain – Nociceptors – in skin, joints and periostea of bones, blood vessel walls, and few in visceral organs. – Fast pain – myelinated fibers carry sense. May be localized or deep – Slow pain – unmyelinated fibers – may be burning or aching pain – very general area. – Referred Pain- may not be where you think it is – see page 251 black book.

5. General senses, con’t Temperature- thermoreceptors: free nerve endings just beneath the skin, also in muscles, liver, and hypothalamus Cold receptors 3-4 times more numerous than warm receptors

6. General Senses Touch, Pressure and Position – Mechanoreceptors – general category Tactile receptors – touch, pressure, and vibration Proprioceptors – monitors position of joints, tendons and ligaments and the state of muscular contraction – watch out adolescent!

7. Sense of Smell- olfactory organs

9. Sense of Taste – Gustatory Sense

11. Vision

12. Optic Nerve

13. Visual Pathway

14. Near Sighted and Far Sighted

15. Rods and Cones of Retina Cones are for color vision, Rods for night vision

17. Color vision test A subject with normal color vision can read the number 26 in the above plate, but a person with colorblindness will see only a field of gray dots.

18. Sense of Hearing

19. Tympanic membrane Cool sound waves

20. Hearing Pathway

21. Balance – Vestibular Complex

22. Cochlear Implant?