Week 4 (Muscular Disorders) Flashcards
Three types of muscle tissue:
Smooth
Skeletal
Cardiac
Myofiber
Muscle cell
Connective tissue inside muscles
-Epimysium–Around the muscle
-Perimysium–Around the grouped fascicles
-Fascicles–Groups of muscle cells
-Endomysium–Around the muscle cells
Aerobic metabolism
Uses oxygen to produce ATP.
Water and CO2 are byproducts
Anaerobic metabolism (because your body has consumed oxygen faster than it can supply it)
Uses carbohydrates to produce ATP.
Byproduct: Lactic acid –> muscle pain.
Muscle soreness is from…
How massage helps…
-Lactic acid buildup
-Calcium leakage
-Microscopic tears
-Move fresh oxygenated blood into sore areas
-Flush out old, stagnant interstitial fluid
Muscular Dystrophy
Genetic disorder. Causes muscle wasting. Starts in the extremities, ending in degeneration in the heart and breathing muscles.
Death by 20 years old.
Enlarged muscles as fiber is replaced w fat and connective tissue.
Underdeveloped muscles: Use resistance
Overdeveloped muscles: Massage
CI for circulatory massage if CV weakness
Spasms and Cramps
Involuntary muscle contraction
Can happen to smooth or skeletal muscle.
Spasms
Longer and less intense
Cramp
Shorter and stronger
Relief Techniques for Spasms and Cramps
- Reset golgi tendon organs (press about 30 seconds)
- Origin insertion technique. Parallel + X Fiber friction.
- Push the two ends of the muscle together.
- “Stick a fist in it”. Direct pressure to the belly.
- Reciprocal inhibition.
What causes spasms/cramps?
- Nutrition: calcium, magnesium, potassium
- Ischemia (muscles tighten in response to injury, which causes more ischemia)
- Exercise
- Dehydration
- Electrolyte imbalance
- Splinting
- Abnormal neurological stimulation
- Hyperthermia (ion pump malfunction–>electrolyte imbalance)
Strain vs Sprain
sTrain - Tendon or muscle injury
sPrain - ligament and capsule of a joint (bone to bone)
These words are not interchangeable
Ligament–Bone to bone
Tendon-Muscle to Bone
Spasm-Longer and lower grade
Cramp-Short and intense
Strain-Tendon + muscle injury
Sprain-Ligament and capsule injury
Strain
Injury to tendon/muscle
Sometimes acute, but often from overuse/scar tissue
Massage is indicated