What does distensibility mean?
capable of being distended
Medical Definition of distensible : capable of being distended, extended, or dilated distensible blood vessels. Other Words from distensible.
What is distensibility muscle?
Distensibility was defined as the compliance at a given pressure divided by a reference area. Wall stress was calculated using Laplace’s Law as transmural pressure multiplied by midwall radius divided by wall thickness (h).
What is high distensibility?
The capability of being distended or stretched.
What is vascular distensibility?
Distensibility is related to elastic properties of the arterial wall, and compliance reflects the buffering function of the artery. Distensibility is a determinant of stress on the vessel wall. A decreased distensibility might increase the risk of arterial wall damage.
What is Distensible stomach?
adjective. capable of being distended; able to stretch and expand. “the stomach is a distensible organ” Synonyms: expansive. able or tending to expand or characterized by expansion.
What relaxes smooth muscle?
SMOOTH MUSCLE RELAXATION. Smooth muscle relaxation occurs either as a result of removal of the contractile stimulus or by the direct action of a substance that stimulates inhibition of the contractile mechanism (e.g., atrial natriuretic factor is a vasodilator).
What is the distensibility of lungs?
Pulmonary vascular (PV) distensibility, defined as the percent increase in pulmonary vessel diameter per mmHg increase in pressure, permits the pulmonary arteries to increase in size to accommodate increased blood flow.
What is aortic distensibility?
Aortic distensibility (AD) is a measurement of vascular elasticity, which reflects the stiffness of the aorta [6]. However, AD is markedly decreased in patients with known coronary artery disease (CAD) and is inversely proportional to the severity of CAD [7,8,9,10,11].
What is the difference between distention and distension?
Distension (spelled distention in many style regimens) generally refers to an enlargement, dilation, or ballooning effect. It may refer to: Abdominal distension, typically a symptom of an underlying disease or dysfunction in the body, rather than an illness in its own right.
Is bloating the same as distension?
Bloating refers to the sensation of abdominal (tummy) swelling, sometimes described as the feeling of an inflated balloon in the belly. By contrast, abdominal distention refers to an actual increase in measured abdominal size.
Are veins Distensible?
Abstract. A valuable characteristic of the vascular system is that all blood vessels are distensible.
Why are veins Distensible?
The distensible nature of the arteries allows them to accommodate the pulsatile output of the heart and to average out the pressure pulsations. This provides smooth, continuous flow of blood through the very small blood vessels of the tissues. The most distensible by far of all the vessels are the veins.
What is the most distensible part of the GI tract?
Overview. The stomach is the first intra-abdominal part of the gastrointestinal (GI), or digestive, tract. It is a muscular, highly vascular bag-shaped organ that is distensible and may take varying shapes, depending on the build and posture of the person and the state of fullness of the organ (see the image below).
Is smooth muscle sympathetic or parasympathetic?
sympathetic nervous system
Vascular smooth muscle is primarily innervated by the sympathetic nervous system.
What is the difference between distensibility and compliance?
Distensibility is related to elastic properties of the arterial wall, and compliance reflects the buffering function of the artery. Distensibility is a determinant of stress on the vessel wall.
How do you calculate arterial distensibility?
Carotid distensibility measured as changes in arterial diameter or circumferential area in systole and diastole is a reflection of the mechanical stress affecting the arterial wall during the cardiac cycle. Distensibility can be calculated as Ds − Dd where Ds is end-systolic diameter of artery.
What causes aortic stiffness?
Aortic stiffness occurs when the elastic fibers within the arterial wall (elastin) begin to fray due to mechanical stress. This is seen with increasing cardiovascular risk factors and aging.
What is aortic flow?
Aortic blood flow is associated with increased electrical potential due to MF. Repolarization of the ventricle coincides temporally with ejection of blood into the ascending aorta; thus, it is expected that aortic blood flow potential induced by a magnetic field is recorded in the T-wave region of the ECG trace.
What is the definition of vascular distensibility?
Vascular distensibility normally is expressed as thefractional increase in volume for each millimeter of mercury rise in pressure, in accordance with the following formula:
What is distension in medical terms?
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005 dis·ten·tion , distension(dis-ten’shŭn) The act or state of being distended or stretched. See also: dilation [L. dis-tendo,to stretch apart]
What is the distensibility of blood per mm Hg?
That is, if 1 mm Hg causes a vessel that originally contained 10 millimeters of blood to increase its volume by 1 milliliter, the distensibility would be 0.1 per mm Hg, or 10 per cent per mm Hg. Difference in Distensibility of the Arteries and the Veins.
What is the difference between compliance and distensibility?
Compliance and distensibility are quite different. A highly distensible vessel that has a slight volume may have far less compliance than a much less distensible vessel that has a large volume because compliance isequal to distensibility times volume.