What's the difference between membrane and periosteum?
Membrane
Definition:
(n.) A thin layer or fold of tissue, usually supported by a fibrous network, serving to cover or line some part or organ, and often secreting or absorbing certain fluids.
Example Sentences:
(1) Tryptic digestion of the membranes caused complete disappearance of the binding activity, but heat-treatment for 5 min at 70 degrees C caused only 40% loss of activity.
(2) The extents of phospholipid hydrolysis were relatively low in brain homogenates, synaptic plasma membranes and heart ventricular muscle.
(3) The patterns observed were: clusters of granules related to the cell membrane; positive staining localized to portions of the cell membrane, and, less commonly, the whole cell circumference.
(4) Activity of Na,K-ATPase activity was measured as a functional marker for synaptosomal membranes.
(5) The influence of the various concepts for the induction of lateral structure formation in lipid membranes on integral functional units like ionophores is demonstrated by analysing the single channel current fluctuations of gramicidin in bimolecular lipid membranes.
(6) Phospholipid methylation in human EGMs is distinctly different from that in rat EGMs (Hirata and Axelrod 1980) in that the human activity is not Mg++-dependent, and apparent methyltransferase I activity is located in the external membrane surface.
(7) The predicted non-Lorentzian line shapes and widths were found to be in good agreement with experimental results, indicating that the local orientational order (called "packing" by many workers) in the bilayers of small vesicles and in multilamellar membranes is substantially the same.
(8) Apparently, the irradiation with visible light of a low intensity creates an additional proton gradient and thus stimulates a new replication and division cycle in the population of cells whose membranes do not have delta pH necessary for the initiation of these processes.
(9) Using monoclonal antibodies directed against the plasma membrane of Madin-Darby canine kidney (MDCK) cells, we demonstrated previously that a glycoprotein with an Mr = 23,000 (gp23) had a non-polarized cell surface distribution and was observed on both the apical and basolateral membranes (Ojakian, G. K., Romain, R. E., and Herz, R. E. (1987) Am.
(10) The fraction of the viral dose which became cell associated was independent of the incubation temperature and increased with increasing target membrane concentration.
(11) Together these results suggest that IVC may operate as a selective activator of calpain both in the cytosol and at the membrane level; in the latter case in synergism with the activation induced by association of the proteinase to the cell membrane.
(12) The Cole-Moore effect, which was found here only under a specific set of conditions, thus may be a special case rather than the general property of the membrane.
(13) We have examined the insertion of bovine 17 alpha-hydroxylase (P45017 alpha) into the endoplasmic reticulum of COS 1 cells to evaluate the functional role of its hydrophobic amino-terminal sequence and membrane insertion.
(14) The transport of potassium ions through membranes of red blood cells was examined in in bitro experiments using a CMF of 4500 oersted.
(15) These membrane perturbation effects not observed with bleomycin-iron in the presence of a hydroxyl radical scavenger, dimethyl thiourea, or a chelating agent, desferrioxamine, were correlated with the ability of the complex to generate highly reactive oxygen species.
(16) Extensive studies during recent years have shown that the interaction between hormone and membrane-bound receptor can affect the receptor characteristics in at least two ways.
(17) Membranes of this material were filled with islets of Langerhans and implanted in the peritoneal cavity of rats.
(18) The penicillin-resistant Enterococcus hirae R40 has a typical profile of membrane-bound penicillin-binding proteins (PBPs) except that the 71 kDa PBP5 of low penicillin affinity represents about 50% of all the PBPs present.
(19) To investigate the mechanism of enhanced responsiveness of cholesterol-enriched human platelets, we compared stimulation by surface-membrane-receptor (thrombin) and post-receptor (AlF4-) G-protein-directed pathways.
(20) Moreover, in DCVC-treated cells the mitochondria could not be stained with rhodamine-123, indicating severe mitochondrial damage and loss of membrane potential.
Periosteum
Definition:
(n.) The membrane of fibrous connective tissue which closely invests all bones except at the articular surfaces.
Example Sentences:
(1) The control periosteum contained a rich network of substance P immunofluorescent nerves.
(2) This flap is formed by a triangle-shaped excision combined with cranial and caudal slitting of the periosteum.
(3) In the periosteum of the human tibia, the arterial blood supply shows a general sectorial angioarchitecture.
(4) It is the manner in which the soft tissues and, in particular, the periosteum are handled that ultimately affects the results of the surgical treatment.
(5) In the area where the collagen was disorganized, and also near the periosteum, woven bone was first formed, which was then remodeled into lamellar bone.
(6) Orthopedic new approaches to therapy of OA include removal of abnormal tissue to stimulate repair (e.g., burring, abrasion) and grafting (e.g., osteochondral grafts, perichondrium, periosteum) to the subchondral bone.
(7) Treated embryos showed a delay in the longitudinal growth of the tibia, as well as in the growth of all structures enclosed by the perichondrium-periosteum.
(8) It also shows that the periosteum has the leading role in the restructuring process of these grafts.
(9) Chick periosteum-derived cells, which do not enter the chondrogenic cell lineage during normal bone development and growth, exhibit chondrogenic potential in high cell density culture conditions.
(10) Thus it was found that isolated tibial and skull periosteum in situ give rise to tubular and membranous bone respectively, suggesting an environmental influence.
(11) Normal (N-) calf bone consists of lamellae regularly spaced and oriented parallel to the periosteum.
(12) Fracture repair proceeds by an osteogenic reaction from both periosteum and marrow.
(13) It appears that the periosteum slides over the bone cortex, mitigating local stretching of the muscle around osteotomy site.
(14) The fibers originated in the periosteum or in the fibrous stroma of the marrow cavity and were oriented with regard to both the spatial and the lamellar organization of the bone.
(15) The capsule of the cyst was connected with the dura mater and the orbital periosteum with adhesions.
(16) Whenever the tumor is close to the mandible or adherent to the periosteum, consideration should be given to marginal mandibulectomy.
(17) Calvarial periosteum, however, was found to be less bone producing and in that respect not to be superior to the dura.
(18) We have previously shown that osteoblasts and osteocytes contain adenylate cyclase responsive to both PTH and CT whereas the enzyme prepared from periosteum and marrow cells did not respond to either.
(19) The tarsal strips are sutured to periosteum at the lateral orbital wall, adjusting the height and tension of the lateral canthus.
(20) Presumably, the membrane has served as a scaffold for regenerating periosteum.