Search results
Results From The WOW.Com Content Network
The periosteum is a membrane that covers the outer surface of all bones, [1] except at the articular surfaces (i.e. the parts within a joint space) of long bones. (At the joints of long bones the bone's outer surface is lined with "articular cartilage", a type of hyaline cartilage.)
peri-denoting something with a position 'surrounding' or 'around' another Greek περῐ́ (perí), around, about, concerning periodontal-pexy: fixation Greek πῆξις (pêxis), fixing in place, fastening nephropexy: phaco-lens-shaped Greek φᾰκός (phakós), lentil-bean phacolysis, phacometer, phacoscotoma -phagia, -phage
The perichondrium (from Greek περί, peri, 'around' and χόνδρος, chondros, 'cartilage') is a layer of dense irregular connective tissue that surrounds the cartilage of developing bone. It consists of two separate layers: an outer fibrous layer and inner chondrogenic layer.
Its definition varies: it can refer to only the superficial structures in this region, or it can be used to include both superficial and deep structures. The perineum corresponds to the outlet of the pelvis. A line drawn across the surface connecting the ischial tuberosities divides the space into two triangles:
This area is controversial, with a 2015 study claiming that pericytes do not express contractile proteins and are not capable of contraction in vivo, [10] although the latter paper has been criticised for using a highly unconventional definition of pericyte which explicitly excludes contractile pericytes. [32]
Anatomy [ edit ] The pericardium is a tough fibroelastic sac which covers the heart from all sides except at the cardiac root (where the great vessels join the heart) and the bottom (where only the serous pericardium exists to cover the upper surface of the central tendon of diaphragm ). [ 4 ]
The peritoneal cavity is widely used in intraperitoneal injections to administer chemotherapy drugs, [5] [6] and is also utilized in peritoneal dialysis. [7] An increase in capillary pressure in the abdominal organs can cause fluid to leave the interstitial space and enter the peritoneal cavity, resulting in a condition called ascites.
Photograph of the retina of the human eye, with overlay diagrams showing the positions and sizes of the macula, fovea, and optic disc. Perifovea is a region in the retina that circumscribes the parafovea and fovea and is a part of the macula lutea. [1]