Physiological Pressures
Physiological Pressures - Related Videos
05:35
Imaging Ca2+ Signals in Small Pulmonary Veins at Physiological Intraluminal Pressures
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2025
In this protocol, we present a novel technique for recording and analyzing Ca2+ signals in intrapulmonary veins (small pulmonary veins or PVs) at physiological intraluminal pressures. The technique involves isolating small PVs, incubating them with a Ca2+ indicator, cannulating and pressurizing them, confocal imaging of Ca2+ signals, and data analysis.
05:33
Physiology of the Circulatory System - Concepts
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2019
Homeostasis Conditions in the external environment of an organism can change rapidly and drastically. To survive, organisms must maintain a fairly constant internal environment, which involves continuous regulation of temperature, pH, and other factors. This balanced state is known as homeostasis, which describes the processes by which organisms maintain their optimal internal conditions. To maintain homeostasis, organisms have developed structures with distinct functions. Physiology is the...
07:24
Physiology of the Circulatory System - Student Protocol
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2019
Measuring Circulatory System Function in Humans ExpandBefore starting the experiment go to the front of the room and collect an alcohol swab, a sphygmomanometer, and a stethoscope. Clean the earpieces with the alcohol swab and then insert them into your ears. To check if the stethoscope is in the on position, gently tap the flat metal disc called the diaphragm. If you hear a sound it's on. If not, turn the metal disc and tap again and keep turning and tapping the disc until you hear a sound.
07:26
Synthesis and Microdiffraction at Extreme Pressures and Temperatures
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Cited by 5 •
2013
The laser heated diamond anvil cell combined with synchrotron micro-diffraction techniques allows researchers to explore the nature and properties of new phases of matter at extreme pressure and temperature (PT) conditions. Heterogeneous samples can be characterized in situ under high pressure by 2D mapping and combined powder, single-crystal and multigrain diffraction approaches.
09:15
Measuring Pressure Volume Loops in the Mouse
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Cited by 16 •
2016
This manuscript describes a detailed protocol for the collection of pressure-volume data from the mouse.
FAQs
Pressure gradients influence movement through blood vessels and cerebrospinal fluid pathways. In the nervous system, these gradients help direct circulation and fluid movement between compartments. Their effects matter because the resulting flows contribute to oxygen delivery to brain tissue and to the regulation of neural conditions.
Arterial pressure, intracranial pressure, and cerebral perfusion pressure must be considered together because their balance influences oxygen delivery to brain tissue. If pressure in one vascular or fluid compartment changes, the relationship among these measures may shift, altering how investigators interpret cerebral blood flow and neural status.
Changes in vessel diameter or compartment volume can modify physiological pressure relationships. Altering a vessel changes the conditions under which blood moves, while changing volume within a fluid compartment can shift pressure and its gradient. Studying these variables helps explain why cerebral blood flow and cerebrospinal fluid movement may change within the nervous system.
Pressure balance provides a framework for interpreting whether conditions support cerebral blood flow and oxygen delivery. Researchers examine the interaction among arterial pressure, intracranial pressure, and cerebral perfusion pressure rather than treating any single measurement in isolation. This approach connects pressure changes with the functional state of brain tissue.
Neuroscience investigations use measurement and modeling to examine pressures within vascular and fluid compartments. These approaches help researchers characterize pressure gradients, evaluate relationships among arterial pressure, intracranial pressure, and cerebral perfusion pressure, and interpret their consequences for cerebral blood flow. The resulting information supports analysis of how pressure conditions affect brain tissue.
Physiological pressure measurements are especially useful in research and clinical monitoring involving brain injury, hydrocephalus, and cerebrovascular disease. In these settings, pressure relationships can help investigators assess conditions affecting cerebral blood flow and oxygen delivery. The measurements also provide context for evaluating changes that may accompany neural dysfunction.
Pressure data can connect altered vascular or fluid-compartment conditions with changes in cerebral blood flow and oxygen delivery. By examining pressure relationships alongside neural status, investigators can better interpret dysfunction rather than viewing it as an isolated outcome. This information also helps assess factors that may preserve cerebral blood flow in affected brain tissue.