ANS (Ch14)
... conserves body energy • Illustration: person who relaxes, reading, after a meal – Blood pressure, heart rate, and respiratory rates are low – Gastrointestinal tract activity is high – Pupils are constricted and lenses are accommodated for close vision ...
... conserves body energy • Illustration: person who relaxes, reading, after a meal – Blood pressure, heart rate, and respiratory rates are low – Gastrointestinal tract activity is high – Pupils are constricted and lenses are accommodated for close vision ...
Autonomic Nervous System
... Blood Pressure & Cardiac Control BR reflex allows us to stand up without fainting • Upright posture shifts ~500 ml of blood to the lower body • ↓ venous return & ↓ cardiac output unloads BRs • ↓ vagal & ↑ sympathetic output via BR reflex maintains BP & cardiac output • In first 15-30 sec post stand ...
... Blood Pressure & Cardiac Control BR reflex allows us to stand up without fainting • Upright posture shifts ~500 ml of blood to the lower body • ↓ venous return & ↓ cardiac output unloads BRs • ↓ vagal & ↑ sympathetic output via BR reflex maintains BP & cardiac output • In first 15-30 sec post stand ...
Investigating Pain, Touch, and Temperature Sensations: Is a small
... is not known. It may occur in isolation, but it can also be a sign of inflammation of the vessels as can be seen in some rheumatological conditions. Neuropathies (primary disorders of the nerves) are not a typical cause for true Raynaud’s, and more often it is just the exaggerated mottling and not a ...
... is not known. It may occur in isolation, but it can also be a sign of inflammation of the vessels as can be seen in some rheumatological conditions. Neuropathies (primary disorders of the nerves) are not a typical cause for true Raynaud’s, and more often it is just the exaggerated mottling and not a ...
Blood exerts a powerful influence on the brain - Gu Lab
... The results make sense to Hillman. “If you were building a city, you wouldn’t put in all the sewers and all the electronics before the houses are built,” she says. “You let the houses get built, and then you provide each house with what it needs.” It’s not clear exactly how the young neurons will ve ...
... The results make sense to Hillman. “If you were building a city, you wouldn’t put in all the sewers and all the electronics before the houses are built,” she says. “You let the houses get built, and then you provide each house with what it needs.” It’s not clear exactly how the young neurons will ve ...
File - Wk 1-2
... keep. There is sympathetic tone and parasympathetic tone. The sympathetic nervous system controls most of the vascular system. The sympathetic fibres keep the blood vessels in a continual state of partial constriction called sympathetic tone or vasomotor tone. When faster blood delivery is needed, t ...
... keep. There is sympathetic tone and parasympathetic tone. The sympathetic nervous system controls most of the vascular system. The sympathetic fibres keep the blood vessels in a continual state of partial constriction called sympathetic tone or vasomotor tone. When faster blood delivery is needed, t ...
Regulation of Respiration
... person breathes deeply for a short interval and then breathes slightly or not at all for an additional interval most common – Cheyne-Stokes breathing (slowly waxing and waning respiration occurring about every 40 to 60 seconds) ...
... person breathes deeply for a short interval and then breathes slightly or not at all for an additional interval most common – Cheyne-Stokes breathing (slowly waxing and waning respiration occurring about every 40 to 60 seconds) ...
Autonomic_notes
... Blood-pressure-raising effects of sympathetic stimulation or adrenaline administration are mediated in part by by alpha-1 receptors, whose activation causes blood vessel constriction in skin and viscera (but not in skeletal muscle, which has few alpha receptors). Beta-1 receptors on heart make it be ...
... Blood-pressure-raising effects of sympathetic stimulation or adrenaline administration are mediated in part by by alpha-1 receptors, whose activation causes blood vessel constriction in skin and viscera (but not in skeletal muscle, which has few alpha receptors). Beta-1 receptors on heart make it be ...
AN IN-DEPTH LOOK AT C.R.P.S – FROM DIAGNOSIS TO
... randomly on any area of the body. Lesions have the appearance of small acne-type eruptions that itch for hours to days and disappear spontaneously. There is no specific etiology apart from the CRPS and no treatment save for topical low potency steroids or anti-histamines to reduce the itch. If scrat ...
... randomly on any area of the body. Lesions have the appearance of small acne-type eruptions that itch for hours to days and disappear spontaneously. There is no specific etiology apart from the CRPS and no treatment save for topical low potency steroids or anti-histamines to reduce the itch. If scrat ...
STUDY STATION 1: Skeletal and Muscular System (pg
... Describe the basic structure of bone and include the different types of marrow. ...
... Describe the basic structure of bone and include the different types of marrow. ...
What is atrial fibrillation?
... ment of atrial cellular physiology, at the origin of AF.As a result of these irregular discharges, the “electrical” atrial rate (not the contraction rate) isbetween 300 and 600 times per minute. Thisresult in improper filling and ejection of blood, as well asa decreased efficiency of the heart’s pum ...
... ment of atrial cellular physiology, at the origin of AF.As a result of these irregular discharges, the “electrical” atrial rate (not the contraction rate) isbetween 300 and 600 times per minute. Thisresult in improper filling and ejection of blood, as well asa decreased efficiency of the heart’s pum ...
Hormonal Control of Blood Calcium Levels
... Hyperparathyroidism results from an overproduction of parathyroid hormone. This results in excessive calcium being removed from bones and being introduced into blood circulation. This causes structural weakness of the bones, which can lead to deformation and breakage, and nervous system impairment d ...
... Hyperparathyroidism results from an overproduction of parathyroid hormone. This results in excessive calcium being removed from bones and being introduced into blood circulation. This causes structural weakness of the bones, which can lead to deformation and breakage, and nervous system impairment d ...
AANA Journal Course - American Association of Nurse Anesthetists
... parasympathetics, resulting in bradycardia and peripheral vasodilation (Figure 2). We may see profound bradycardia during severe blood loss, likely as a result of a falling (or absent) venous return. Although not agreed on by all, the Bezold-Jarisch reflex may promote diastolic filling during catast ...
... parasympathetics, resulting in bradycardia and peripheral vasodilation (Figure 2). We may see profound bradycardia during severe blood loss, likely as a result of a falling (or absent) venous return. Although not agreed on by all, the Bezold-Jarisch reflex may promote diastolic filling during catast ...
chapter 19 the vessel lecture notes
... • Orthostatic hypotension: temporary low BP and dizziness when suddenly rising from a sitting or reclining position • Chronic hypotension: hint of poor nutrition and warning sign for Addison’s disease or hypothyroidism • Acute hypotension: important sign of circulatory shock Alterations in Blood Pre ...
... • Orthostatic hypotension: temporary low BP and dizziness when suddenly rising from a sitting or reclining position • Chronic hypotension: hint of poor nutrition and warning sign for Addison’s disease or hypothyroidism • Acute hypotension: important sign of circulatory shock Alterations in Blood Pre ...
CO 2
... Alveolar ventilation (V) = 4.2 L Pulmonary blood flow (Q) = 5 L V/Q = 0.84 (optimal ratio of air supply and blood ...
... Alveolar ventilation (V) = 4.2 L Pulmonary blood flow (Q) = 5 L V/Q = 0.84 (optimal ratio of air supply and blood ...
The Body Systems Song Tune: Ants Go Marching The Respiratory
... I need my muscles, I need my muscles, I need my muscles to make me strong, And my muscles are part of my Muscular System. ...
... I need my muscles, I need my muscles, I need my muscles to make me strong, And my muscles are part of my Muscular System. ...
For your acute ischemic stroke patients The first 24 hours are critical
... For your acute ischemic stroke patients ...
... For your acute ischemic stroke patients ...
MODULE J – CONTROL OF VENTILATION
... 1. This response is blunted when PaO2 falls below 30 mm Hg. G. The response is to PaO2; NOT CaO2. This means that these chemoreceptors do not respond to anemia or situations where the SaO2 is reduced without concomitant hypoxemia (CO poisoning). Pulmonary Reflexes A. Hering Breuer Reflex 1. This ref ...
... 1. This response is blunted when PaO2 falls below 30 mm Hg. G. The response is to PaO2; NOT CaO2. This means that these chemoreceptors do not respond to anemia or situations where the SaO2 is reduced without concomitant hypoxemia (CO poisoning). Pulmonary Reflexes A. Hering Breuer Reflex 1. This ref ...
Our biggest potential we are opening up, when we bring the mind
... presses stop the blood throughout the body and if it is broken, it is replaced. Some researchers now claim but: The heart is also a sensitive sense organ, a highly developed sense of center, which receives and processes a wealth of information. The heart seems to be a second brain literally. After a ...
... presses stop the blood throughout the body and if it is broken, it is replaced. Some researchers now claim but: The heart is also a sensitive sense organ, a highly developed sense of center, which receives and processes a wealth of information. The heart seems to be a second brain literally. After a ...
Respiratory word
... The entire process of exchanging gases between the atmosphere and body cells is called respiration and consists of the following: ventilation, gas exchange between blood and lungs, gas transport in the bloodstream, gas exchange between the blood and body cells, and cellular respiration. ...
... The entire process of exchanging gases between the atmosphere and body cells is called respiration and consists of the following: ventilation, gas exchange between blood and lungs, gas transport in the bloodstream, gas exchange between the blood and body cells, and cellular respiration. ...
Human Body Webquest
... When your heart pumps blood through the pulmonary artery into the lungs, what material is moving in and what material is moving out? What is this process called? What is the process called in which newly-oxygenated blood travels through the rest of your body? ...
... When your heart pumps blood through the pulmonary artery into the lungs, what material is moving in and what material is moving out? What is this process called? What is the process called in which newly-oxygenated blood travels through the rest of your body? ...
Chapter 23 - Anatomy Freaks
... • Effect of carbon dioxide: small change in carbon dioxide in blood triggers a large increase in rate and depth of respiration - ex: an increase PCO2 of 5 mm Hg causes an increase in ventilation of 100%. – Hypercapnia: greater-than-normal amount of carbon dioxide – Hypocapnia: lower-than-normal amou ...
... • Effect of carbon dioxide: small change in carbon dioxide in blood triggers a large increase in rate and depth of respiration - ex: an increase PCO2 of 5 mm Hg causes an increase in ventilation of 100%. – Hypercapnia: greater-than-normal amount of carbon dioxide – Hypocapnia: lower-than-normal amou ...
reflexes_lesson
... 2. What else controlled by involuntary nervous system? (show the diagraph below) a. heart b. lungs c. viscera d. glands 3. Can you control these systems? a. No, but your general health condition can make a difference in some of them. Use heart rate as an example. ...
... 2. What else controlled by involuntary nervous system? (show the diagraph below) a. heart b. lungs c. viscera d. glands 3. Can you control these systems? a. No, but your general health condition can make a difference in some of them. Use heart rate as an example. ...
Viktor`s Notes * Autonomic NS Disorders (SPECIFIC)
... – decreased neuronal uptake of NE; – widespread denervation supersensitivity - abnormally accentuated blood pressure response to intravenous norepinephrine. no motor manifestations (vs. multiple system atrophy, Parkinson's disease), no peripheral neuropathy (EMG, nerve conduction velocities, sural ...
... – decreased neuronal uptake of NE; – widespread denervation supersensitivity - abnormally accentuated blood pressure response to intravenous norepinephrine. no motor manifestations (vs. multiple system atrophy, Parkinson's disease), no peripheral neuropathy (EMG, nerve conduction velocities, sural ...
BOLD fMRI - BIAC – Duke
... Ogawa et al., 1992 • High-field (4T) in humans • Patterned visual stimulation at 10 Hz • Gradient-echo (GRE) pulse sequence used – Surface coil recorded ...
... Ogawa et al., 1992 • High-field (4T) in humans • Patterned visual stimulation at 10 Hz • Gradient-echo (GRE) pulse sequence used – Surface coil recorded ...
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.