Physiology an der University Of Brighton | Karteikarten & Zusammenfassungen

Lernmaterialien für Physiology an der University of Brighton

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What is Physiology?

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•To explain and understand how living things work.

•The study of function in the body

•It is particularly based on physics, especially forces, pressures, electricity

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What is Pathophysiology?

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•The mechanism by which a disease process causes the organ to fail 

•Explained in terms of physiology (especially physics)

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What is homeostasis?

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•Homeostasis is the regulation of the cell's or the body's internal environment (= extracellular fluid) so that it tends to maintain a stable, constant condition

•Persistence through change

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Give an example of pathophysiology.

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•Type I diabetes – autoimmune destruction of beta cells - insufficient insulin hyperglycaemia - inability of kidney to reabsorb glucose - glucose in urine (symptom) - excess fluid loss into urine (symptom) - loss of glucose - weight loss, hunger, thirst and fatigue (symptoms)

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Give an example of when in medical practice it is important to be able to measure force.

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•Heart and filling

•Starling's Law

•Pathophysiology of dilated cardiomyopathy

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Which of the following are physiological and which are non-physiological: weight gain during pregnancy, increased heart rate during exercise, increased blood sugar during diabetes, increased body temperature (fever) during a viral infection.

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•Physiological

•Weight gain during pregnancy

•Increased heart rate during exercise


•Non-physiological

•Increased blood sugar during diabetes

•Increased body temperature (fever) during a viral infection


Physiological is the healthy and normal state of the body. Non-physiological is either a disease state or happens "unnaturally" in the laboratory

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Give an example of when in medical practice it is important to be able to measure pressure.

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•Expansion of the lung

•Depends on negative pressure in the intrapleural space

•Pathophysiological example is pneumothorax

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Give an example of when in medical practice it is important to be able to measure electricity.

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•The ECG measures the electrical field given off by all the heart muscle cells acting in synchrony

•The ECG can reveal if someone is having a heart attack (ST elevation in myocardial infarct, so called a "STEMI")

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What is the internal environment?

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•Extracellular fluid

•Fluid, electrolytes, extracellular proteins

•Body temperature

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Give a physiological example of the carbonic anhydrase rxn in acid base balance.

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•Secretion of acid into the stomach by gastric parietal cells

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What are the standard ECG features relating to acute myocardial infarction?

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•ST elevation

Sometimes there are Q waves

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During breathing what happens to intrapleural pressure?

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•During inspiration, when thoracic wall expands, it creates a negative pressure between the pleural membranes.

•This causes the lungs to expand

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Q:

What is Physiology?

A:

•To explain and understand how living things work.

•The study of function in the body

•It is particularly based on physics, especially forces, pressures, electricity

Q:

What is Pathophysiology?

A:

•The mechanism by which a disease process causes the organ to fail 

•Explained in terms of physiology (especially physics)

Q:

What is homeostasis?

A:

•Homeostasis is the regulation of the cell's or the body's internal environment (= extracellular fluid) so that it tends to maintain a stable, constant condition

•Persistence through change

Q:

Give an example of pathophysiology.

A:

•Type I diabetes – autoimmune destruction of beta cells - insufficient insulin hyperglycaemia - inability of kidney to reabsorb glucose - glucose in urine (symptom) - excess fluid loss into urine (symptom) - loss of glucose - weight loss, hunger, thirst and fatigue (symptoms)

Q:

Give an example of when in medical practice it is important to be able to measure force.

A:

•Heart and filling

•Starling's Law

•Pathophysiology of dilated cardiomyopathy

Mehr Karteikarten anzeigen
Q:

Which of the following are physiological and which are non-physiological: weight gain during pregnancy, increased heart rate during exercise, increased blood sugar during diabetes, increased body temperature (fever) during a viral infection.

A:

•Physiological

•Weight gain during pregnancy

•Increased heart rate during exercise


•Non-physiological

•Increased blood sugar during diabetes

•Increased body temperature (fever) during a viral infection


Physiological is the healthy and normal state of the body. Non-physiological is either a disease state or happens "unnaturally" in the laboratory

Q:

Give an example of when in medical practice it is important to be able to measure pressure.

A:

•Expansion of the lung

•Depends on negative pressure in the intrapleural space

•Pathophysiological example is pneumothorax

Q:

Give an example of when in medical practice it is important to be able to measure electricity.

A:

•The ECG measures the electrical field given off by all the heart muscle cells acting in synchrony

•The ECG can reveal if someone is having a heart attack (ST elevation in myocardial infarct, so called a "STEMI")

Q:

What is the internal environment?

A:

•Extracellular fluid

•Fluid, electrolytes, extracellular proteins

•Body temperature

Q:

Give a physiological example of the carbonic anhydrase rxn in acid base balance.

A:

•Secretion of acid into the stomach by gastric parietal cells

Q:

What are the standard ECG features relating to acute myocardial infarction?

A:

•ST elevation

Sometimes there are Q waves

Q:

During breathing what happens to intrapleural pressure?

A:

•During inspiration, when thoracic wall expands, it creates a negative pressure between the pleural membranes.

•This causes the lungs to expand

Physiology

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