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Spinal Refleksler Yrd. Doç. Dr. Sefa Gültürk Fizyoloji Anabilim Dalı Cumhuriyet Üniversitesi Tıp Fakültesi Yrd. Doç. Dr. Sefa.

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... konulu sunumlar: "Spinal Refleksler Yrd. Doç. Dr. Sefa Gültürk Fizyoloji Anabilim Dalı Cumhuriyet Üniversitesi Tıp Fakültesi Yrd. Doç. Dr. Sefa."— Sunum transkripti:

1 Spinal Refleksler Yrd. Doç. Dr. Sefa Gültürk Fizyoloji Anabilim Dalı Cumhuriyet Üniversitesi Tıp Fakültesi Yrd. Doç. Dr. Sefa Gültürk Fizyoloji Anabilim Dalı Cumhuriyet Üniversitesi Tıp Fakültesi

2 dr. sefa gültürk2

3 3

4 4 Spinal Cord - medulla spinalis

5 dr. sefa gültürk5

6 6 The Spinal Cord

7 dr. sefa gültürk7 The spinal cord  Spinal nerves innervate specific regions of the body –Attach to spinal cord segments via two roots posterior - sensory inputs –Dorsal root ganglion anterior - motor outputs  Spinal nerves innervate specific regions of the body –Attach to spinal cord segments via two roots posterior - sensory inputs –Dorsal root ganglion anterior - motor outputs

8 dr. sefa gültürk8

9 9 Parts of a Reflex Arc  Receptor: sensitive to a specific change  Sensory neuron: transmits nerve impulse from the receptor to brain or spinal cord  Receptor: sensitive to a specific change  Sensory neuron: transmits nerve impulse from the receptor to brain or spinal cord

10 dr. sefa gültürk10 Components of a reflex arc  Reflex arc has five components: –receptor –sensory neuron –integration centre –motor neuron –Effector Somatic reflex – skeletal muscle Autonomic reflex – smooth muscle, cardiac muscle or gland  Reflex arc has five components: –receptor –sensory neuron –integration centre –motor neuron –Effector Somatic reflex – skeletal muscle Autonomic reflex – smooth muscle, cardiac muscle or gland

11 dr. sefa gültürk11

12 dr. sefa gültürk12 Gerilme refleksi

13 dr. sefa gültürk13 Stretch-gerilme refleksi ve resiprok inhibisyon  Muscle spindle: stretch of muscle spindle generates sensory impulses excitation of agonist inhibition of antagonist  Muscle spindle: stretch of muscle spindle generates sensory impulses excitation of agonist inhibition of antagonist

14 dr. sefa gültürk14 Stretch-gerilme refleksi ve resiprok inhibisyon

15 dr. sefa gültürk15 Stretch Reflex

16 dr. sefa gültürk16 Tendon reflex  Golgi tendon organs detect tension –generate sensory impulses inhibition of agonist excitation of antagonists –Can override stretch reflex  Golgi tendon organs detect tension –generate sensory impulses inhibition of agonist excitation of antagonists –Can override stretch reflex

17 dr. sefa gültürk17 Stretch Reflex : Patellar Tendon Reflex : Monosynaptic Reflex

18 dr. sefa gültürk18 Flexor reflex  Flexor reflex –painful stimulus causes withdrawal of threatened body part –overrides other signals using same pathways  Flexor reflex –painful stimulus causes withdrawal of threatened body part –overrides other signals using same pathways

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