Test 3 (Myscle Phys) Flashcards
Interferes with ability to produce AP’s
K+ accumulation
Due to the accumulation of lactate
Internal acidity
Leads to failure of excitation- contraction coupling
reduced SR calcium release
Caused by changes in the CNS rather than fatigue of the muscles themselves
Central fatigue
Utilized at onset on contractile activity, but limited by CP stores
Creatine phosphate
Takes place within muscle mitochondria if sufficient oxygen is present and is essential during long periods of activity
Cellular respiration
Supports anaerobic or high intensity exercise
Glycolysis
Provides sensory information about muscle length
Muscle spindle apparatus
Provide sensory information about tension exerted on tendons
Golgi tendon organs
What neurons are attached to muscle spindles?
Afferent neurons
Located on tendons near their junction with eh muscle
Golgi tendon organ
Monitor muscle tension
Golgi tendon organs
Inherited disease characterized by progressive deterioration of muscle tissue
Muscular dystrophy
Bacteria in food produces neurotoxin, which prevents the release of acetylcholine necessary for muscle contraction
Botulism
Neurodegenerative disease affecting various motor neurons which leads to loss of function leads to muscle weakness, atrophy, and spastic paralysis
ALS