Thermoreceptor NBS.pptx

Thermoreceptor

1. Thermoreceptor By Rika Nafratilofa Dwi Aprillia 1610211130

2. Pendahuluan

3. Thermoreceptor A-gamma dan serabut saraf C Hangat  Serabut saraf C Dingin  A-gamma dan serabut saraf C Ambang p’ aktif an reseptor hangat  +- 30 o C Reseptor dingin inaktif  40 o C

4. Nerve fiber respond to different level of temperatures T he efects of different temperatures on the responses of nerve fibers : ( 1) a pain fiber stimulated by cold , ( 2) a cold fiber , ( 3) a warmth fiber , and ( 4) a pain fiber stimulated by heat .

5. Mekanisme penghantaran sinyal termal Melalui Somatic Sensory Pathway  Anterolatelar / spinothalamic pathway First-order neurons  conduct impulses from somatic receptors into the brain stem or spinal cord. Second-order neurons  conduct impulses from the brain stem and spinal cord to the thalamus . Third-order neurons  conduct impulses from the thalamus to the primary somatosensory area of the cortex on the same side

6. T he signals travel for a few segments upward or downward to the Tract of Lissauer and then terminate mainly in laminae I, II, and III of the dorsal horns—the same as for pain

7. Sensasi suhu dan nyeri diperantarai melalui trakrus spinotalamikus ventrolatelar yang berproyeksi ke ventral talamus kontralatelar lalu ke korteks somatosensorik primer