Practical CV_cardiac cycle
... Arterial pulse wave – rhythmic expansion of arterial walls synchronous with the left ventricular contraction. The velocity of the pulse wave as it travels down the arteries is 3-5 m/sec for large elastic arteries, and 14-15 m/sec for the small, less compliant vessels. Velocity of the pulse wave incr ...
... Arterial pulse wave – rhythmic expansion of arterial walls synchronous with the left ventricular contraction. The velocity of the pulse wave as it travels down the arteries is 3-5 m/sec for large elastic arteries, and 14-15 m/sec for the small, less compliant vessels. Velocity of the pulse wave incr ...
הצעה למבנה הקוריקולום לקורסים הקדם
... 1) Know the factors that determine the total energy of the flowing blood and the relationship among these factors. Describe the usual reference point for physiological pressure. 2) Be able to differentiate between flow and velocity in terms of units and concept. 3) Understand the relationship betwee ...
... 1) Know the factors that determine the total energy of the flowing blood and the relationship among these factors. Describe the usual reference point for physiological pressure. 2) Be able to differentiate between flow and velocity in terms of units and concept. 3) Understand the relationship betwee ...
Relation of the Lungs to the Thoracic (Chest) Wall
... 3-Transport of O2 and CO2 through pulmonary and systemic circulation by bulk flow 4-Exchange of O2 and CO2 between blood in tissue capillaries and cells in tissues by diffusion 5-Cellular utilization of O2 and production of CO2 Pulmonary ventilation is a mechanical process that depends on volume cha ...
... 3-Transport of O2 and CO2 through pulmonary and systemic circulation by bulk flow 4-Exchange of O2 and CO2 between blood in tissue capillaries and cells in tissues by diffusion 5-Cellular utilization of O2 and production of CO2 Pulmonary ventilation is a mechanical process that depends on volume cha ...
Respiratory and Renal Review
... " R " Length of the Airway " R 1/" radius4 o Primary Resistance to Flow: " 25-50% of total airway resistance is in the nose, nasopharynx, and larynx (upper airways) " Greatest resistance in the tracheobronchial tree is the medium sized bronchioles (up to 7th generation) and not in the very small bro ...
... " R " Length of the Airway " R 1/" radius4 o Primary Resistance to Flow: " 25-50% of total airway resistance is in the nose, nasopharynx, and larynx (upper airways) " Greatest resistance in the tracheobronchial tree is the medium sized bronchioles (up to 7th generation) and not in the very small bro ...
2 Mechanics of fluids at rest
... E2: The lift force of an airplane In order to make an airplane lift, the pressure under the wing need be higher than that on the wing. A good idea is to make the wing have different curve surfaces ...
... E2: The lift force of an airplane In order to make an airplane lift, the pressure under the wing need be higher than that on the wing. A good idea is to make the wing have different curve surfaces ...
Fluids
... passes into the major arteries. These branch into arterioles, which in turn branch into capillaries. The blood returns to the heart via the veins. The radius of the aorta is about 1.2 cm, and the blood passing through it has a speed of about 40 cm/s. A typical capillary has a radius of about 4 x 10- ...
... passes into the major arteries. These branch into arterioles, which in turn branch into capillaries. The blood returns to the heart via the veins. The radius of the aorta is about 1.2 cm, and the blood passing through it has a speed of about 40 cm/s. A typical capillary has a radius of about 4 x 10- ...
Chapter 14
... Nonviscous flow: The viscosity of a fluid is a measure of how resistive the fluid is to flow; viscosity is the fluid analog of friction between solids. An object moving through a nonviscous fluid would experience no viscous drag force—that is, no resistive force due to viscosity; it could move at co ...
... Nonviscous flow: The viscosity of a fluid is a measure of how resistive the fluid is to flow; viscosity is the fluid analog of friction between solids. An object moving through a nonviscous fluid would experience no viscous drag force—that is, no resistive force due to viscosity; it could move at co ...
8、kidney organ
... Rate at which a substance is filtered by the glomeruli can be calculated: Quantity filtered = GFR x P P = inulin concentration in plasma. Amount filtered = amount excreted GFR = V x U P The polysaccharide inulin is one such material which may be injected into the subject, allowing plasma concentrati ...
... Rate at which a substance is filtered by the glomeruli can be calculated: Quantity filtered = GFR x P P = inulin concentration in plasma. Amount filtered = amount excreted GFR = V x U P The polysaccharide inulin is one such material which may be injected into the subject, allowing plasma concentrati ...
Mechanical Ventilation
... surface tension of water. The internal surface of the alveolus is covered with a thin coat of fluid. The water in this fluid has a high surface tension, and provides a force that could collapse the alveolus. The presence of surfactant in this fluid breaks up the surface tension of water, making it l ...
... surface tension of water. The internal surface of the alveolus is covered with a thin coat of fluid. The water in this fluid has a high surface tension, and provides a force that could collapse the alveolus. The presence of surfactant in this fluid breaks up the surface tension of water, making it l ...
Respiratory 4 Control of Respiration Control of Respiration
... But these changes are in the venous, not the arterial blood During moderate exercise arterial PO2 and PCO2 are normal Receptors are measuring arterial blood ...
... But these changes are in the venous, not the arterial blood During moderate exercise arterial PO2 and PCO2 are normal Receptors are measuring arterial blood ...
tutorial 1 GUS
... • The is the plasma level at which the glucose first appears in the urine . • The actual renal threshold is about • 200 mg/dL of arterial plasma, • which corresponds to a venous level of about 180 mg/dL. ...
... • The is the plasma level at which the glucose first appears in the urine . • The actual renal threshold is about • 200 mg/dL of arterial plasma, • which corresponds to a venous level of about 180 mg/dL. ...
The Physiology of the Afferent and Efferent Arterioles
... the blood flow into the glomerulus, and the glomerular filtration pressure, a primary force for plasma ultrafiltration. • On the other hand, constriction of the efferent arteriole raises glomerular filtration pressure, thereby maintaining or even increasing GFR despite a drop in RBF and thus causing ...
... the blood flow into the glomerulus, and the glomerular filtration pressure, a primary force for plasma ultrafiltration. • On the other hand, constriction of the efferent arteriole raises glomerular filtration pressure, thereby maintaining or even increasing GFR despite a drop in RBF and thus causing ...
DHANALAKSHMI COLLEGE OF ENGINEERING, CHENNAI
... In common language, dimension means size referring to the length and breadth. For example, the dimension of a room is 10 m x 8 m. In technical parlance, it means the symbolic representation of a physical quantity. For example, M for mass, L for length, T for time, L T-1 for velocity, L T -2 for acce ...
... In common language, dimension means size referring to the length and breadth. For example, the dimension of a room is 10 m x 8 m. In technical parlance, it means the symbolic representation of a physical quantity. For example, M for mass, L for length, T for time, L T-1 for velocity, L T -2 for acce ...
Boundary Layers - The Colorful Fluid Mixing Gallery
... • The objective is to take the effects of the boundary layer correctly into account without having to use a mesh that is so fine that the flow pattern in the layer can be calculated explicitly. • Using the no-slip boundary condition at wall, velocities at the nodes at the wall equal those of the wal ...
... • The objective is to take the effects of the boundary layer correctly into account without having to use a mesh that is so fine that the flow pattern in the layer can be calculated explicitly. • Using the no-slip boundary condition at wall, velocities at the nodes at the wall equal those of the wal ...
fluid transport mechanisms in microfluidic devices
... In Fig. 4, we see that the imaged velocity profiles for electrokinetic flow are in good agreement with Eq. (4). The flow is a combination of electroosmosis and electrophoresis, and the theory outlined above shows that both components yield a flat profile. Figure 5, however, shows significant deviati ...
... In Fig. 4, we see that the imaged velocity profiles for electrokinetic flow are in good agreement with Eq. (4). The flow is a combination of electroosmosis and electrophoresis, and the theory outlined above shows that both components yield a flat profile. Figure 5, however, shows significant deviati ...
Prismaflex_CRRT_Principles_Pre_Reading_2015_
... referred to as ultrafiltration. Fluid moves from the higher to the lower pressure area, i.e. from the blood into the dialysis fluid. The ultrafiltration rate, i.e. the amount of fluid removed per unit of time, is decided by two factors: the pressure gradient across the membrane (TMP) and the membran ...
... referred to as ultrafiltration. Fluid moves from the higher to the lower pressure area, i.e. from the blood into the dialysis fluid. The ultrafiltration rate, i.e. the amount of fluid removed per unit of time, is decided by two factors: the pressure gradient across the membrane (TMP) and the membran ...
Cardiovascular homeostasis in health & disease
... • Systemic response to the inflammatory mediators released in type I hypersensitivity – Histamine, acetylcholine, kinins, leukotrienes, and prostaglandins all cause vasodilation and increase capillary permeability º What will happen when arterioles vasodilate throughout the body? º What will happen ...
... • Systemic response to the inflammatory mediators released in type I hypersensitivity – Histamine, acetylcholine, kinins, leukotrienes, and prostaglandins all cause vasodilation and increase capillary permeability º What will happen when arterioles vasodilate throughout the body? º What will happen ...
Respiratory Physiology
... • Alveoli are blind sacs where gases in the inspired air exchange with the blood. • Blood supply provides the heat and moisture to warm and humidify the inspired air and the nutrients for lung tissue, and it is the site of exchange between the body and inspired air. ...
... • Alveoli are blind sacs where gases in the inspired air exchange with the blood. • Blood supply provides the heat and moisture to warm and humidify the inspired air and the nutrients for lung tissue, and it is the site of exchange between the body and inspired air. ...
RENAL - ACID BASE – ADRENAL PHYSIOLOGY
... c. Proteins tend to have a negative charge at physiologic pH d. Extracellular fluid constitutes 40% if the total body weight 68. Which of the following is true with respect to buffers and fluid/solute movement? a. The buffering capacity of an acid is best when its pKa is higher than the pH of the so ...
... c. Proteins tend to have a negative charge at physiologic pH d. Extracellular fluid constitutes 40% if the total body weight 68. Which of the following is true with respect to buffers and fluid/solute movement? a. The buffering capacity of an acid is best when its pKa is higher than the pH of the so ...
The Physics of Flow
... side of the tube are almost stationary. To help to understand this consider what happens when walking across a small river or stream; at the edge of the water by the river bank it does not feel like there is much movement of the water, whereas once you reach the middle the water is moving a lot fast ...
... side of the tube are almost stationary. To help to understand this consider what happens when walking across a small river or stream; at the edge of the water by the river bank it does not feel like there is much movement of the water, whereas once you reach the middle the water is moving a lot fast ...
IMPROVEMENT OF BRAIN ANGIOGRAPHIC IMAGES USING 1.5T
... 1) Department of Medical Physics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran 2) Department of Radiotherapy, School of Medicine, Iran University of Medical Sciences, Tehran, Iran Abstract: Due to the importance of selecting imaging parameters in magnetic resonance brain a ...
... 1) Department of Medical Physics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran 2) Department of Radiotherapy, School of Medicine, Iran University of Medical Sciences, Tehran, Iran Abstract: Due to the importance of selecting imaging parameters in magnetic resonance brain a ...
What*s different about children*s kidneys
... (due to unfiltered plasma proteins) in the peritubular capillaies → ↑ reabsorption of tubular fluid. • ↓ medullary blood flow through the vasa recta → ↓ washout of NaCl and urea in the kidney medullary space → ↑ [NaCl] + [urea] in the medulla → ↑ absorption of tubular fluid. ...
... (due to unfiltered plasma proteins) in the peritubular capillaies → ↑ reabsorption of tubular fluid. • ↓ medullary blood flow through the vasa recta → ↓ washout of NaCl and urea in the kidney medullary space → ↑ [NaCl] + [urea] in the medulla → ↑ absorption of tubular fluid. ...
PHYSIOLOGY OF VENOUS AND LYMPHATIC SYSTEM
... heart in the cardiovascular system. The pressure gradients to move lymph through the vessels come from the skeletal muscle action, respiratory movement, and contraction of smooth muscle in vessel walls. ...
... heart in the cardiovascular system. The pressure gradients to move lymph through the vessels come from the skeletal muscle action, respiratory movement, and contraction of smooth muscle in vessel walls. ...
Hemodynamics
Hemodynamics or hæmodynamics (hemo- + -dynamics) is the fluid dynamics of blood flow. The circulatory system is controlled by homeostatic mechanisms, much as hydraulic circuits are controlled by control systems. Hemodynamic response continuously monitors and adjusts to conditions in the body and its environment. Thus hemodynamics explains the physical laws that govern the flow of blood in the blood vessels. The relationships can be challenging because blood vessels are complex, with many ways for blood to enter and exit under changing conditions.