Why do paralyzed people still have their limbs, is it because they do some passive exercises only?
That involves nerve damage, but blood and muscles still flow naturally.
So I am a little confused-the musculovenous pump works because muscles (surround veins) contract which forces vein valves to close and that forces blood to be pushed towards heart, against gravity. But how is the deep fascia involved/help?
Deep fascia is a layer of fascia which can surround individual muscles, and divide groups of muscles into compartments.
This is the dense fibrous connective tissue that interpenetrates and surrounds the muscles, bones, nerves and blood vessels of the body. It provides connection and communication in the form of aponeuroses, ligaments, tendons, retinacula, joint capsules, and septa. The deep fasciae envelop all bone (periosteum and endosteum); cartilage (perichondrium), and blood vessels (tunica externa) and become specialized in muscles (epimysium, perimysium, and endomysium) and nerves (epineurium, perineurium, and endoneurium). The high density of collagen fibers is what gives the deep fascia its strength and integrity. The amount of elastin fiber determines how much extensibility and resilience it will have.
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