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| | Structural Versus Functional Modulation of the Arterial Baroreflex -- Chapleau et al. 26 (2): 341 -- Hypertension |
 | | The defect in the baroreflex with aging is not the result of reduced baroreceptor activity and is ascribed to a central impairment in the mediation of the reflex. | | | This suggests that baroreceptor resetting in hypertensive animals is not caused by the structural changes but rather by functionally reversible changes. | | | Aortic wall properties and baroreceptor behavior at normal arterial pressure and in acute hypertensive resetting in dogs. |
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http://hyper.ahajournals.org/cgi/content/full/26/2/341
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| | jan13b |
| | Through the integrated activities of the baroreceptors and autonomic efferent outflow, the inverse relationship between arterial pressure and heart rate is regulated on a second-by-second basis. | | | Excellent insight into baroreceptor responsiveness may be obtained by analyzing heart rate and arterial pressure responses to phase four of Valsalva's maneuver. | | | Assuming that no such device is available, baroreceptor responsiveness may still be evaluated from changes in heart rate. |
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http://faculty.css.edu/tboone2/asep/jan13b.htm
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| | Nitric Oxide Regulates c-fos Expression in Nucleus Tractus Solitarii Induced by Baroreceptor Activation via ... |
| | Ciriello J (1983) Brainstem projections of aortic baroreceptor afferent fibers in the rat. | | | Wu J, Fang L, Lin Q, and Willis WD (2000) Fos expression is induced by increased nitric oxide release in rat spinal cord dorsal horn. | | | Waki H, Kasparov S, Wong LF, Murphy D, Shimizu T, and Paton JF (2003) Chronic inhibition of endothelial nitric oxide synthase activity in nucleus tractus solitarii enhances baroreceptor reflex in conscious rats. |
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http://molpharm.aspetjournals.org/cgi/content/full/65/2/319
(4878 words)
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| | Head-Heart Entrainment: A Preliminary Survey |
| | This preliminary survey deals with experimental observations on the degree of entrainment exhibited between heart rate variability (HRV), respiration and electroencephalograph (EEG) recordings for 5 subjects, trained in the use of a particular inner self-management technique, as they change their mode of heart function through various states of order. | | | The application of the FF technique readily leads to ordered states of heart function, one of which is the entrainment mode which has been described in detail elsewhere [9]. | | | The entrainment between the HRV waveform and the low frequency portion of the EEG reported here was observed in subjects who have been practicing the FF technique for some time and, thus, can consistently demonstrate an increased ratio of time in the heart entrainment mode and shift to this mode at will. |
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http://heartmath.org/research/research-papers/HeadHeart
(2973 words)
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| | Modeling the baroreceptor vagal reflex |
| | The schematic of the baroreceptor vagal reflex is shown in Fig. | | | The baroreceptor vagal reflex is an important part of the cardiovascular control system. | | | Baroreceptors responded with adaptive spike trains to each pulse of blood pressure. |
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http://www.rybak-et-al.net/baro.html
(665 words)
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| | OHSU School of Dentistry - Biological Structure and Function |
| | The sensitivity of the arterial baroreceptor reflex changes during the early postnatal period, and the efficacy of glutamatergic synaptic transmission between baroreceptor afferents and second-order neurons in the brainstem is determined by the frequency of baroreceptor afferent firing. | | | The arterial baroreceptors play a critical role in the reflex control of arterial blood pressure. | | | The sensory component of the reflex consists of 1) primary sensory neurons located in the cranial nodose-petrosal ganglion (NPG) complex, and 2) sensory-relay neurons in the brainstem. |
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http://www.ohsu.edu/sod/bsf/FacAZB.html
(722 words)
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| | The Baroreceptor Reflex |
| | However, you still want to be nice to your Baroreceptor Reflex, because it actually works day-to-day, minute-to-minute, second-to-second to make sure that blood flow to the brain and the pressure of blood reaching the brain are kept within homeostatic limits. | | | The problem with trying to treat neurogenic shock is that the baroreceptor reflex can't help maintain adequate blood flow to the brain, because the Vasomotor Center isn't functioning and therefore can't increase cardiac output or even shunt blood away from other, less O | | | The response to postural changes (standing, sitting, lying down, kneeling, etc.) is probably the single most important function of the baroreceptor reflex during your life span. |
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http://www.unm.edu/~toolson/miscellaneous_tidbits_about_shock.html
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| | _____________________ |
| | not working can survive loss of a greater fraction of her blood than one whose baroreceptor reflex is intact. | | | Inrease, but later decrease as blood pressure in the carotid sinuses is returned to the normal range by the baroreceptor reflex; | | | On a suitable set of axes, illustrate the response of a baroreceptor to changes in blood pressure (i) in a normal person (blood pressure = 120/80) and (ii) in a person whose blood pressure increased to 220/180 and remained there for a few months. |
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http://www.unm.edu/~toolson/435_sample_final_2003_KEY.htm
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| | British Journal of Pharmacology - Abstract of article: Modulation of the baroreceptor reflex by ![]() |
| | -adrenoceptors facilitate the reflex response to both loading and unloading of the arterial baroreceptors. | | | -KO compared to conscious WT mice; the baroreceptor reflex gain (ratio maximal change in heart rate/maximal change in mean arterial pressure) was decreased by 40%. | | | -KO mice as compared to WT, conscious as well as anaesthetized; the baroreceptor reflex gains were decreased by 50 and 65%, respectively. |
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http://www.nature.com/bjp/journal/v141/n5/abs/0705636a.html
(339 words)
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| | University of Iowa Anesthesia Publications |
| | The central mediation of the baroreflex depends on the pulse phasic pattern of afferent baroreceptor discharge. | | | Recent work has demonstrated that "functional" mechanisms, both at the level of the peripheral sensory endings and within the central nervous system, contribute significantly to altered baroreflex responses. | | | We have conducted both reductive studies of mechanoelectrical transduction in cultured baroreceptor neurons and integrative studies with in vivo recordings of the activity of baroreceptor afferent fibers and efferent sympathetic nerves. |
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http://www.anesth.uiowa.edu/readabstract.asp?PMID=7543454
(282 words)
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| | Pressure - Open Encyclopedia |
| | In the human body, a baroreceptor is a pressure sensor. | | | Arterial baroreceptors are located in each of the two internal carotid sinuses (carotid arteries, neck arteries) and in the aortic arch. |
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http://open-encyclopedia.com/Pressure
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| | PCSbaroreflexpg12.html |
| | The most important point to remember about the baroreceptor reflex is that it is a rapidly acting nervous mechanism for blood pressure control. | | | IN contrast, the baroreceptor-nervous system reflex (in red below) works the fastest but become useless within a day. | | | However you should realize that other baroreceptors stimulate responses that change the output and quality of urine from the kidneys via the actions of several hormones such as angiotensin and aldosterone. |
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http://www.bergen.org/ACADEMY/Bio/PCS/PCSbaroreflexpg12.html
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| | NeurosciencePhDDepartment |
| | The baroreceptor reflex is a key mechanism of blood pressure regulation. | | | (1) The role of specific K+ and Na+ channels in modulation of excitability of baroreceptor afferent neurons. | | | Major goals of the research program are to define the molecular mechanisms influencing mechanoelectrical transduction and neuronal excitability in baroreceptor neurons, and to delineate mechanisms responsible for excessive sympathetic nerve activity and decreased baroreflex sensitivity in pathological states (e.g., hypertension, hypercholesterolemia, atherosclerosis) and in aging. |
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http://www.uiowa.edu/~neuro/Faculty/chapleaum.htm
(702 words)
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| | APStracts 7:0138R, 2000. |
| | Baroreceptors were stimulated by increasing blood pressure >40 mmHg with phenylephrine (10 µg•kg"minus"1•min"minus"1 iv) in sham SAD and SAD rats. | | | Role of the locus ceruleus in baroreceptor regulation of supraoptic vasopressin neurons in the rat. | | | LC lesions significantly reduced the number of vasopressin neurons that were inhibited by acute baroreceptor stimulation. |
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http://www.uth.tmc.edu/apstracts/2000/regulatory/May/138r.html
(277 words)
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| | Baroreceptor - Wikipedia, the free encyclopedia |
| | Thus, in people with essential hypertension the baroreceptors behave as if the elevated blood pressure is normal and aim to maintain this high blood pressure. | | | Signals from the aortic baroreceptors travel through the vagus nerve (cranial nerve X). | | | Baroreceptors (or baroceptors) in the human body detect the pressure of blood flowing though them, and can send messages to the central nervous system to increase or decrease total peripheral resistance and cardiac output. |
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http://en.wikipedia.org/wiki/Baroreceptor
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| | APStracts 5:0086H, 1998. |
| | Therefore, it is concluded that the nature of the interaction (ie. | | | Departments of Physiology and Internal Medicine, Harry S. Moss Heart Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd. Dallas, TX 75235-9034 | | | facilitation or inhibition) between the baroreflex and the exercise pressor reflex is dependent upon the level of baroreceptor input. |
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http://www.uth.tmc.edu/apstracts/1998/heart/March/86H.html
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| | Baroreceptor Reflex |
| | The baroreceptor reflex is the body's rapid response system for dealing with changes in blood pressure. | | | In the diagram green lines denote inhibitory effects and red lines indicate excitatory effects. | | | Return to Lecture 16 / Return to Lecture 21 |
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http://members.aol.com/Bio50/LecNotes/lecnot21a.html
(145 words)
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| | baroreceptor - definition of baroreceptor by the Free Online Dictionary, Thesaurus and Encyclopedia. |
| | A sensory nerve ending that is stimulated by changes in pressure, especially one in the walls of blood vessels such as the carotid sinus. | | | This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. | | | baroreceptor - a sensory receptor that responds to pressure |
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http://www.thefreedictionary.com/baroreceptor
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| | The Pregnancy Institute - PUCP |
| | These changes are simultaneous with cord stimulation and due to chemoreceptor and baroreceptor responses (which are for quick fetal compensation). | | | Because it is innervated, it may also send neurologic responses to the brain. | | | (426),(427) Baroreceptor and chemoreceptor responses occur with release of catacholamines, cortisol, vasopressin,angiotenson and other biochemical agents to initiate a fetal response to developing hypoxia. |
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http://www.preginst.com/pucp.html
(13577 words)
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| | Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations |
| | Availability information may be found in the Availability, Publisher, Research Organization, Resource Relation and/or Author (affiliation information) fields and/or via the "Full-text Availability" link. | | | Baroreceptor sensitivity in supine man following inhalation of amyl nitrite | | | For a journal article, please see the Resource Relation field. |
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http://www.osti.gov/energycitations/product.biblio.jsp?osti_id=5144126
(138 words)
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| | Baroreceptor Modeling |
| | Algorithm: A System Dynamics Model of Baroreceptor Regulation of Blood Pressure | | | The diagram below is a prototype model created by Dr. Jeff Kiel of the University of Texas Health Science Center using a simulation software tool known as STELLA®. | | | You can run the model using the form input below. |
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http://www.shodor.org/MASTER/biomed/physio/baroweb/algorithm.html
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