Uncategorized Gravitational and Muscular Forces result in Molding of Bone to Accommodate the Mechanical Forceskeywords bone femur fx healed fracture compensation total knee replacement plain X-Ray Davidoff MD49464 49465Ashley Davidoff MD TheCommonVein.net Design of the Joints Disc Material and Shape of the Spine to Accommodate the Mechanical and Gravitational Forces Created with the Evolution of the Upright Positionkeywords bone spine lumbar spine scotty dog pedicles normal obliques animals in the body plain film X-ray47717c01Ashley Davidoff MD TheCommonVein.net RunningKeywords health youth age time physiology boy running happy davidoff 64163b01Ashley Davidoff MD TheCommonVein.net Coordinated Muscular ForcesKey Words Dancers Arielle Davidoff80753pb01.800Ashley Davidoff MD TheCommonVein.net Contracted Fetal BicepsKkey Words week fetus arm hand biceps thumb index finger human opposing thumb and index grape in hand normal anatomy MRI food in the body47757b02Ashley Davidoff MD TheCommonVein.net Peristalsis in Ureter and Bladder ? Contraction to Move Urinary Waste Out Key Words kidney ureters bladder post void calyces pelvis post void forces physiology contraction IVP physiology Plain X-ray KUB31843Ashley Davidoff MD TheCommonVein.net Pump Action ? Peristalsis Moving it On for Further ProcessingKey Words stomach antrum fx narrowing with normal mucosal folds dx antral contraction wave antral peristalsis normal UGI upper GI barium imaging radiology39548b03Ashley Davidoff MD TheCommonVein.net Colonic PeristalsisKey Words elderly male colon large bowel cecum ascending colon descending colon sigmoid colon hepatic flexure splenic flexure rectum fx peristalsis fx normal anatomy and physiology BE barium enema45661Also 45660 Chewing Carbohydrates with Chemical Action of Amylase results in Glucose AvailabilityKey Words food carbohydrates dessert almonds nuts blueberry blueberries chocolate chewing mastication amylase chemical forces breakdown enzyme catabolism glucose 62306b05p.800Ashley Davidoff MD TheCommonVein.net Mechanical Forces Bringing Air to AlveoliChest Wall, Diaphragm, Alveolar ExpansionThe five major layers that keep the air moving include the outer bony cage, the muscular layer represented in maroon, the pleural complex (orange yellow orange) the lung (blue) and surfactant within the alveolus. (pink)42530b05b09b01a08 Ashley Davidoff MD TheCommonVein.net Keeping the Lungs attached to the Chest Wall via A Two Layered Pleura ? Capillary ForcesThe coronally reformatted image of the lung parenchyma has been outlined with the visceral pleura, (pink) the pleural fluid in the pleural space, (orange) and the parietal pleura. (green) Note how at end expiration the parietal pleura in the costophrenic sulcus extends beyond the lung margin so that the visceral pleura is absent in the costophrenic sulcus and there are two layers of parietal pleura facing each other. During inspiration the lung expands into this space. 32634b10Key Words lung pleura pulmonaryAshley Davidoff MD TheCommonVein.net Elastic ForcesThis CTscan shows a theoretical changes of the aortic wall during diastole (a) sytolic expansion (b) and return to normal in diastole (c) In systole (b) the suprarenal artery is expanded by the pulse but is relatively decompressed by the the low resistance and high flow renal arteries. The infrarenal aorta is relatively more expanded in systole (b) since the iliac arteries offer a relative resistance. This increased resistance causes the elastic tissue in the aorta to stretch (b) so that the recoil in diastole (c) results in a sustained forward moving force assisting the blood to get to their most distal destination ? the feet. When the aorta starts to lose its elasticity the recoil of systole gradually is weakened so that the aorta does not return to its normal diameter after each systolic expansion. Over many years this lack of recoil is progressive so that the resulting wall is weaker and dilated, until an aneurysm can be formed. 24877c03 key words CVS artery aorta AAA infrarenal circulatory elasticity recoilAshley Davidoff MD TheCommonVein.net Wiggers Diagram ? Pressures in th Cardiovascular SystemKey Words heart cardiac physiology pressure EKG ECG pressure curves diagram LV aorta LA left atrium left ventricle systole diastole acv waves33808b.800Ashley Davidoff MD Ashley Davidoff MDTHECOMMONVEIN.net Creating Pressure Gradients by Muscular Pump ActionKey Words heart cardiac LV left ventricle aorta aortic systemic circulation capillary capillaries arterioles venules right atrium RA right ventricle RV normal physiology pressures hemodynamicsAshley Davidoff MD TheCommonVein.net49483b01