Mechanical Forces

Gravitational and Muscular Forces result in Molding of Bone to Accommodate the Mechanical Forces
keywords bone femur fx healed fracture compensation total knee replacement plain X-Ray Davidoff MD
49464  49465
Ashley 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 Position
keywords bone spine lumbar spine scotty dog pedicles normal obliques animals in the body plain film X-ray
47717c01
Ashley Davidoff MD  TheCommonVein.net
Running
Keywords health youth age time physiology boy running happy davidoff 
64163b01
Ashley Davidoff MD  TheCommonVein.net
Coordinated Muscular Forces
Key Words Dancers Arielle Davidoff
80753pb01.800
Ashley Davidoff MD  TheCommonVein.net
Contracted Fetal Biceps
K
key Words week fetus arm hand biceps thumb index finger human opposing thumb and index grape in hand normal anatomy MRI food in the body
47757b02
Ashley 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 KUB
31843
Ashley Davidoff MD  TheCommonVein.net
Pump Action – Peristalsis Moving it On for Further Processing
Key Words stomach antrum fx narrowing with normal mucosal folds dx antral contraction wave antral peristalsis normal UGI upper GI barium imaging radiology
39548b03
Ashley Davidoff MD  TheCommonVein.net
Colonic Peristalsis
Key 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 enema
45661
Also 45660
Chewing Carbohydrates with Chemical Action of Amylase results in Glucose Availability
Key Words food carbohydrates dessert almonds nuts blueberry blueberries chocolate chewing mastication amylase chemical forces breakdown enzyme catabolism glucose 
62306b05p.800
Ashley Davidoff MD  TheCommonVein.net
Mechanical Forces Bringing Air to Alveoli
Chest Wall,  Diaphragm,  Alveolar Expansion
The 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 Forces
The 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.  32634b10
Key Words  lung pleura pulmonary
Ashley Davidoff MD  TheCommonVein.net
Elastic Forces
This 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 recoil
Ashley Davidoff MD  TheCommonVein.net
Wiggers Diagram – Pressures in th Cardiovascular System
Key Words heart cardiac physiology pressure EKG ECG pressure curves diagram LV aorta LA left atrium left ventricle systole diastole acv waves
33808b.800
Ashley Davidoff MD 
Ashley Davidoff MD
THECOMMONVEIN.net
Creating Pressure Gradients by Muscular Pump Action
Key Words heart cardiac LV left ventricle aorta aortic systemic circulation capillary capillaries arterioles venules right atrium RA right ventricle RV normal physiology pressures hemodynamics
Ashley Davidoff MD  TheCommonVein.net
49483b01