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SLIDING FILAMENT MECHANISM. Anis A. Makky, drg, MKes. Oral Biology Dept. - Dentistry Faculty Airlangga University Surabaya, May 07, 2009. MUSCLE. skeletal muscle smooth muscle cardiac muscle. SKELETAL MUSCLE. muscle fibers contractile protein no extracellular calcium. - PowerPoint PPT Presentation
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SLIDING FILAMENT MECHANISM
Anis A. Makky, drg, MKes
Oral Biology Dept. - Dentistry Faculty
Airlangga University
Surabaya, May 07, 2009
Receptors in Muscle
• Muscle spindle– Detect dynamic and static changes in muscle length– Stretch reflex
• Stretch on muscle causes reflex contraction
• Golgi tendon organ (GTO)– Monitor tension developed in muscle– Prevents damage during excessive force generation
• Stimulation results in reflex relaxation of muscle
• Central– "Feeling"– Lactic acid
• Peripheral– Glycogen depletion– Ca2+ interference
– High Pi levels
– ECF high K+
– ACh depletion
Muscle Fatigue: Causes not well known
Figure 12-14: Locations and possible causes of muscle fatigue