Physiology of cerebral venous blood flow: from experimental data in
... In contrast to the cerebroarterial system, the cerebrovenous system is not well examined and only partly understood. The cerebrovenous system represents a complex three-dimensional structure that is often asymmetric and considerably represent more variable pattern than the arterial anatomy. Particul ...
... In contrast to the cerebroarterial system, the cerebrovenous system is not well examined and only partly understood. The cerebrovenous system represents a complex three-dimensional structure that is often asymmetric and considerably represent more variable pattern than the arterial anatomy. Particul ...
Central pituitary adenylate cyclase- activating polypeptide (PACAP
... To our knowledge, our results demonstrate for the first time in any vertebrate class that exogenous administration of the two neurohormonal peptides PACAP and VIP in the brain reduces the cardiac BRS. The effects of the two peptides are most probably mediated primarily by the central nervous system ...
... To our knowledge, our results demonstrate for the first time in any vertebrate class that exogenous administration of the two neurohormonal peptides PACAP and VIP in the brain reduces the cardiac BRS. The effects of the two peptides are most probably mediated primarily by the central nervous system ...
Test #2
... diagnosis you walk into the examining room and give the patient a verbal command to pick up a pencil that is on the desk with his left hand. The patient is unable to do this, and therefore you know that the General Practitioner's diagnosis is correct. Explain how you were able to deduce this based u ...
... diagnosis you walk into the examining room and give the patient a verbal command to pick up a pencil that is on the desk with his left hand. The patient is unable to do this, and therefore you know that the General Practitioner's diagnosis is correct. Explain how you were able to deduce this based u ...
Vagal Ischemia Induced Lung Immune Component Infarct Following
... of efferent and afferent vagal reflex pathways that regulate respiration. The GPN, other lower cranial nerves and upper cervical spinal nerves are injured as well. Disruption extends into the cervical spinal canal, aggravating the mortal effects of SAH. These result in alteration in breathing patter ...
... of efferent and afferent vagal reflex pathways that regulate respiration. The GPN, other lower cranial nerves and upper cervical spinal nerves are injured as well. Disruption extends into the cervical spinal canal, aggravating the mortal effects of SAH. These result in alteration in breathing patter ...
The Mammalian Diving Response: An Enigmatic Reflex to Preserve
... been reviewed previously (15, 26, 27, 63, 119, 123, 167, 198). It might be noted, however, that the avian responses are somewhat dissimilar to those seen in mammals in that the bradycardia and peripheral vascular responses are slower in onset than those in mammals and may be more the result of slowe ...
... been reviewed previously (15, 26, 27, 63, 119, 123, 167, 198). It might be noted, however, that the avian responses are somewhat dissimilar to those seen in mammals in that the bradycardia and peripheral vascular responses are slower in onset than those in mammals and may be more the result of slowe ...
Central Control of the Cardiovascular and Respiratory Systems and
... episode when one or more groups of neurons in the network discharge a characteristic pattern of action potentials (528, 529). These phases have been defined as inspiration, postinspiration (passive expiration), and expiration (active expiration). The postinspiratory phase is a period of inspiratory ...
... episode when one or more groups of neurons in the network discharge a characteristic pattern of action potentials (528, 529). These phases have been defined as inspiration, postinspiration (passive expiration), and expiration (active expiration). The postinspiratory phase is a period of inspiratory ...
Central Control of the Cardiovascular and Respiratory Systems
... episode when one or more groups of neurons in the network discharge a characteristic pattern of action potentials (528, 529). These phases have been defined as inspiration, postinspiration (passive expiration), and expiration (active expiration). The postinspiratory phase is a period of inspiratory ...
... episode when one or more groups of neurons in the network discharge a characteristic pattern of action potentials (528, 529). These phases have been defined as inspiration, postinspiration (passive expiration), and expiration (active expiration). The postinspiratory phase is a period of inspiratory ...
velkommen til rikshospitalets powerpointmal
... ABLATION IN WPW SYNDROME Is WPW syndrome present should ablation be performed before pregnancy WPW syndrome means preexcitation and arrhythmias Medium long RP tachycardia ...
... ABLATION IN WPW SYNDROME Is WPW syndrome present should ablation be performed before pregnancy WPW syndrome means preexcitation and arrhythmias Medium long RP tachycardia ...
Novelty exploration training tasks - Repositório da Universidade de
... function were monitored and metabolic plus behavioral parameters evaluated before and after microinjection in each area of genetic information encoding hKir2.1 channels through a lentivirus. ...
... function were monitored and metabolic plus behavioral parameters evaluated before and after microinjection in each area of genetic information encoding hKir2.1 channels through a lentivirus. ...
Mechanics of Relaxation of the Human Heart
... During exercise, LV stroke volume increases as a result of both increased contractility (via sympathetic stimulation) and increased end-diastolic LV volume/preload (via Frank-Starling mechanism). This must be paralleled by an enhanced LV filling volume. During exercise, both the enhanced LV filling ...
... During exercise, LV stroke volume increases as a result of both increased contractility (via sympathetic stimulation) and increased end-diastolic LV volume/preload (via Frank-Starling mechanism). This must be paralleled by an enhanced LV filling volume. During exercise, both the enhanced LV filling ...
Control of Respiration - ADAM Interactive Anatomy
... 26. (Page 7.) What is the most important factor controlling the rate and depth of breathing? 27. (Page 7.) Does the carbon dioxide stimulate the central chemoreceptors directly? 28. (Page 7.) What is the relationship between hydrogen ions and pH? 29. (Page 7.) Label the diagram on page 7. 30. (Page ...
... 26. (Page 7.) What is the most important factor controlling the rate and depth of breathing? 27. (Page 7.) Does the carbon dioxide stimulate the central chemoreceptors directly? 28. (Page 7.) What is the relationship between hydrogen ions and pH? 29. (Page 7.) Label the diagram on page 7. 30. (Page ...
Lec: 1 Dr.Methaq Mueen Hemodynamic disorders Hemo means
... the body equally, (first periorbital edema). Dependent edema also called Pitting Edema (pressure by fingers on edematous area will result in depressed area). Independent Edema:(Edema against gravity) Edema of fingers in patient with Preeclampsia. ...
... the body equally, (first periorbital edema). Dependent edema also called Pitting Edema (pressure by fingers on edematous area will result in depressed area). Independent Edema:(Edema against gravity) Edema of fingers in patient with Preeclampsia. ...
Hypothalamic paraventricular nucleus activation contributes to
... shown that sympathetic hyperactivity in HF rats is associated with increased extracellular NE in the PVN [42,43]. NE plays a critical role in the pathophysiology of HF [44,45]. GABA is a well-known inhibitory neurotransmitter in the CNS. A large body of evidence suggests that GABA plays an important ...
... shown that sympathetic hyperactivity in HF rats is associated with increased extracellular NE in the PVN [42,43]. NE plays a critical role in the pathophysiology of HF [44,45]. GABA is a well-known inhibitory neurotransmitter in the CNS. A large body of evidence suggests that GABA plays an important ...
Full version (PDF file)
... reducing effect of melatonin seen in SHR (Pechanova et al. 2007), L-NAME hypertensive rats (Paulis et al. 2010a, Paulis et al. 2010b), healthy volunteers (Arangino et al. 1999) or patients with essential hypertension (Simko and Pechanova 2009). The association of melatonin administration with sympat ...
... reducing effect of melatonin seen in SHR (Pechanova et al. 2007), L-NAME hypertensive rats (Paulis et al. 2010a, Paulis et al. 2010b), healthy volunteers (Arangino et al. 1999) or patients with essential hypertension (Simko and Pechanova 2009). The association of melatonin administration with sympat ...
Modulation of visceral function by selective stimulation of the left
... in successive cardiac cycles can elicit sinus arrhythmias. Moreover, Matheny & Shaar (1997) have suggested the technique of vagus nerve stimulation as a means of temporarily slowing down or arresting the heart during surgery. To increase the trial cycle length, Carlson et al. (1992) selectively stim ...
... in successive cardiac cycles can elicit sinus arrhythmias. Moreover, Matheny & Shaar (1997) have suggested the technique of vagus nerve stimulation as a means of temporarily slowing down or arresting the heart during surgery. To increase the trial cycle length, Carlson et al. (1992) selectively stim ...
Dokument_1
... activity was recorded simultaneously with renal blood flow and mean arterial pressure in chloralose-anesthetized rats. Polyethylene catheters (PE-50) were inserted into the left femoral artery and vein under halothane (2% in oxygen) anesthesia. Thereafter, the anesthesia was continued with intraveno ...
... activity was recorded simultaneously with renal blood flow and mean arterial pressure in chloralose-anesthetized rats. Polyethylene catheters (PE-50) were inserted into the left femoral artery and vein under halothane (2% in oxygen) anesthesia. Thereafter, the anesthesia was continued with intraveno ...
BLOOD TYPE DIET CHART - Natural Remedies And Cures
... associated with perimenopause. Also used for both men and women with cardiovascular disease, high blood pressure & problems with circulation Immune modulator increases the production & activity of white blood cells. Used to treat common cold/sore throat (for symptoms), infection, and influenza Antiv ...
... associated with perimenopause. Also used for both men and women with cardiovascular disease, high blood pressure & problems with circulation Immune modulator increases the production & activity of white blood cells. Used to treat common cold/sore throat (for symptoms), infection, and influenza Antiv ...
L3-ANS LECTURE Sulta..
... Frequently referred to as the fear, fight or flight response It has a stimulatory effect on organs and physiological systems, responsible for rapid sensory activity (pupils in the eye) and ...
... Frequently referred to as the fear, fight or flight response It has a stimulatory effect on organs and physiological systems, responsible for rapid sensory activity (pupils in the eye) and ...
Tinnitus: What You Need to Know
... pulsatile middle ear mass or that may appear as an Ø Pulsatile tinnitus may result from non-laminar blood flow caused by increased Ø Dehiscent jugular bulbs results from the absence of the sigmoid plate that incidental finding. This entity is usually associated normally lies between the middle ear ...
... pulsatile middle ear mass or that may appear as an Ø Pulsatile tinnitus may result from non-laminar blood flow caused by increased Ø Dehiscent jugular bulbs results from the absence of the sigmoid plate that incidental finding. This entity is usually associated normally lies between the middle ear ...
Central neural control of the cardiovascular system
... curve to the right) (49) as well as central regulatory mechanisms that maintain the arterial blood PO2 (PaO2) despite large changes in metabolic activity (1). Apart from physical exercise, coordinated cardiovascular and respiratory mechanisms regulate the O2 supply to all tissue during other behavio ...
... curve to the right) (49) as well as central regulatory mechanisms that maintain the arterial blood PO2 (PaO2) despite large changes in metabolic activity (1). Apart from physical exercise, coordinated cardiovascular and respiratory mechanisms regulate the O2 supply to all tissue during other behavio ...
The Role of Autonomic Nervous System in Rapid Breathing Practices
... respiration influences the autonomic rhythms, it is also true the autonomic challenges are able to modify the respiration. Naschitz et al (2000) studied this equation. They compared the ventilatory responses to autonomic challenge evoked by upright tilting. The upright tilting is best-known stimulus ...
... respiration influences the autonomic rhythms, it is also true the autonomic challenges are able to modify the respiration. Naschitz et al (2000) studied this equation. They compared the ventilatory responses to autonomic challenge evoked by upright tilting. The upright tilting is best-known stimulus ...
Is Embryonic Limulus Heart Really Myogenic? Experimental
... rounder lumen than the middle section (Fig. AB). This is in agreement with drawings by Kingsley (1893) of hearts sectioned at about this stage. The most caudal section (Fig. AC) contains no heart tube as yet, only a dorsal thickened tissue cord. This of course explains the absence of heartbeat from ...
... rounder lumen than the middle section (Fig. AB). This is in agreement with drawings by Kingsley (1893) of hearts sectioned at about this stage. The most caudal section (Fig. AC) contains no heart tube as yet, only a dorsal thickened tissue cord. This of course explains the absence of heartbeat from ...
No Slide Title
... explain how they relate to autonomic effects. – Explain how the ANS controls many target organs through dual innervation. – Explain how control is exerted in the absence of dual innervation. ...
... explain how they relate to autonomic effects. – Explain how the ANS controls many target organs through dual innervation. – Explain how control is exerted in the absence of dual innervation. ...
ANS MCQ
... 72) Epinephrine produces all the following effects except : a. Bronchoconstriction. b. Coronary V.D. c. Glycogenolysis. d. Increased cardiac properties. e. Mydriasis. 73) A drug that blocks the beta adrenergic receptors in likely to cause: a. Relaxation of the sphincters of the GIT. b. An increase i ...
... 72) Epinephrine produces all the following effects except : a. Bronchoconstriction. b. Coronary V.D. c. Glycogenolysis. d. Increased cardiac properties. e. Mydriasis. 73) A drug that blocks the beta adrenergic receptors in likely to cause: a. Relaxation of the sphincters of the GIT. b. An increase i ...
Syncope (medicine)
Syncope, also known as fainting, passing out and swooning, is defined as a short loss of consciousness and muscle strength, characterized by a fast onset, short duration, and spontaneous recovery. It is due to a decrease in blood flow to the entire brain usually from low blood pressure. Some causes have prodromal symptoms before the loss of consciousness occurs. These symptoms may include light headedness, sweating, pale skin, blurred vision, nausea, vomiting, and feeling warm, among others. Syncope may also be associated with a short episode of muscle twitching. If a person does not completely lose consciousness and muscle strength it is referred to as presyncope. It is recommended that presyncope be treated the same as syncope.Causes range from non-serious to potentially fatal. There are three broad categories of causes: heart or blood vessel related, reflex also known as neurally mediated, and orthostatic hypotension. Issues with the heart and blood vessels are the cause in about 10% and typically the most serious while neurally mediated is the most common. Heart related causes may include an abnormal heart rhythm, problems with the heart valves or heart muscle and blockages of blood vessels from a pulmonary embolism or aortic dissection among others. Neurally mediated syncope occurs when blood vessels expand and heart rate decreases inappropriately. This may occur from either a triggering event such as exposure to blood, pain or strong feelings or a specific activity such as urination, vomiting, or coughing. This type of syncope may also occur when an area in the neck known as the carotid sinus is pressed. The final type of syncope is due to a drop in blood pressure from standing up. This is often due to medications that a person is taking but may also be related to dehydration, significant bleeding or infection.A medical history, physical examination, and electrocardiogram (ECG) are the most effective ways to figure out the underlying cause. The ECG is useful to detect an abnormal heart rhythm, poor blood flow to the heart muscle, and other electrical issue such as long QT syndrome and Brugada's. Heart related causes also often have little history of a prodrome. Low blood pressure and a fast heart rate after the event may indicate blood loss or dehydration, while low blood oxygen levels may be seen following the event in those with pulmonary embolism. More specific tests such as implantable loop recorders, tilt table testing or carotid sinus massage may be useful in uncertain cases. Computer tomography (CT) is generally not required unless specific concerns are present. Other causes of similar symptoms that should be considered including seizure, stroke, concussion, low blood oxygen, low blood sugar, drug intoxication and some psychiatric disorders among others. Treatment depends on the underlying cause. Those who are considered at high risk following investigation may be admitted to hospital for further monitoring of the heart.Syncope affects about three to six out of every thousand people each year. It is more common in older people and females. It is the reason for one to three percent of visits to emergency departments and admissions to hospital. Up to half of women over the age of 80 and a third of medical students describe at least one event at some point in their life. Of all those with syncope about 4% die in the next 30 days. The risk of a bad outcome, however, depends very much on the underlying cause.