Flashcards in Fascias Deck (12):
What do fascias do in the body?
Constitute the wrapping packaging and insulating materials of the deep structures of body.
What are the two fascia categories?
Superficial fascia, deep fascia.
What is the difference between superficial fascia and deep fascia?
Superficial fascia has a fatty layer found deep to dermis whereas deep fascia has dense organized connective tissue layer, devoid of fat.
Superficial fascia may be composed of two layers in some areas like the abdomen wall for example. The outer layer is fatty and the inner is membranous.
The fascist thickness varies widely. And the steeper to us surround muscles and neurovascular bundles which may give rise to attachments for underlying muscles. Never passes freely over bone where deep fascia contacts bone it blends with periosteum. Limits outer expansion of contracting muscles. Pushes blood out of veins as muscles are compressed. Along with venous valves, assist with venous return the heart
Tell me the four things about fascias compartments. Location, contain good/bad, compartments.
Located in limbs, contain groups of muscles with similar functions and same nerve supply, compartment separated by inter-muscular sept "take sheets of deep fascia, extend from the surrounding fascial sleeve centrally to attache to bone", may contain or direct spread of infection or tumors.
What is retinacula and what does it do? (Singular retinaculum)
Thickening of deep fascia near joints, hold tendons in place during flexion/extension to prevent them from bowstringing.
Bursae (singular-bursa): what is it, what does it do, where is it found, what does it look like?
It is: closed sacs or envelopes of serous membrane capable of secreting lubricating fluid.
Found: locations subject to friction.
Function: enable one structure to move more friendly over another, can communicate with synovial joints.
Appearance: an example of an empty balloon, normally collapsed having potential spaces when fluid is formed in excess or inflamed the space becomes realized.
What are the different types of Bursae?
Subcutaneous: occur between skin and bony prominences like bone and the knee.
Subfascial: lie beneath deep fascia.
Subtendinous: facilitate movement of tendons over bone.
Synovial tendon sheath's: specialized Bursae wrap around tendons and also encloses them as they pass through osseofibrous tunnels.
What is a collapsed bursal sack and viscera?
Double layer of membrane surrounding important organs.
List 3 collapsed bursal sacs in the body.
Pericardial sac: surrounds heart, heart is not inside.
Pleural sac: surrounds long, long is not inside it.
Peritoneal sac: surrounds abdominal viscera, but viscera is not inside it.
What are the two layers of the collapsed bursal sac?
Parietal layer: outer layer, the one in contact with the body wall.
Visceral layer: inner layer, the one adjacent to the viscera.
What 3 things is subserous fascia known as?
Endothoracic fascia, Endoabdominal (transversalis) fascia