Spinal Refleksler Yrd. Doç. Dr. Sefa Gültürk Fizyoloji Anabilim Dalı Cumhuriyet Üniversitesi Tıp Fakültesi sgulturk@cumhuriyet.edu.tr
dr. sefa gültürk
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Spinal Cord -medulla spinalis dr. sefa gültürk
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The Spinal Cord dr. sefa gültürk
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 dr. sefa gültürk
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Parts of a Reflex Arc Receptor: sensitive to a specific change Sensory neuron: transmits nerve impulse from the receptor to brain or spinal cord dr. sefa gültürk
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 dr. sefa gültürk
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Gerilme refleksi dr. sefa gültürk
Stretch-gerilme refleksi ve resiprok inhibisyon Muscle spindle:stretch of muscle spindle generates sensory impulses excitation of agonist inhibition of antagonist dr. sefa gültürk
Stretch-gerilme refleksi ve resiprok inhibisyon dr. sefa gültürk
Stretch Reflex dr. sefa gültürk
Tendon reflex Golgi tendon organs detect tension generate sensory impulses inhibition of agonist excitation of antagonists Can override stretch reflex dr. sefa gültürk
Stretch Reflex : Patellar Tendon Reflex : Monosynaptic Reflex dr. sefa gültürk
Flexor reflex Flexor reflex painful stimulus causes withdrawal of threatened body part overrides other signals using same pathways dr. sefa gültürk
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dr. sefa gültürk
dr. sefa gültürk