Physiology at University of Brighton

Flashcards and summaries for Physiology at the University of Brighton

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Study with flashcards and summaries for the course Physiology at the University of Brighton

Exemplary flashcards for Physiology at the University of Brighton on StudySmarter:

What is Physiology?

Exemplary flashcards for Physiology at the University of Brighton on StudySmarter:

What is Pathophysiology?

Exemplary flashcards for Physiology at the University of Brighton on StudySmarter:

Give an example of pathophysiology.

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Exemplary flashcards for Physiology at the University of Brighton on StudySmarter:

What is homeostasis?

Exemplary flashcards for Physiology at the University of Brighton on StudySmarter:

What is the internal environment?

Exemplary flashcards for Physiology at the University of Brighton on StudySmarter:

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

Exemplary flashcards for Physiology at the University of Brighton on StudySmarter:

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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Exemplary flashcards for Physiology at the University of Brighton on StudySmarter:

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

Exemplary flashcards for Physiology at the University of Brighton on StudySmarter:

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

Exemplary flashcards for Physiology at the University of Brighton on StudySmarter:

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

Exemplary flashcards for Physiology at the University of Brighton on StudySmarter:

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

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During dilated cardiomyopathy what happens to the heart's ability to pump and why?

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Exemplary flashcards for Physiology at the University of Brighton on StudySmarter:

Physiology

What is Physiology?

•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

Physiology

What is Pathophysiology?

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

•Explained in terms of physiology (especially physics)

Physiology

Give an example of pathophysiology.

•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)

Physiology

What is homeostasis?

•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

Physiology

What is the internal environment?

•Extracellular fluid

•Fluid, electrolytes, extracellular proteins

•Body temperature

Physiology

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

•Heart and filling

•Starling's Law

•Pathophysiology of dilated cardiomyopathy

Physiology

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.

•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

Physiology

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

•Expansion of the lung

•Depends on negative pressure in the intrapleural space

•Pathophysiological example is pneumothorax

Physiology

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

•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")

Physiology

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

•Secretion of acid into the stomach by gastric parietal cells

Physiology

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

•ST elevation

Sometimes there are Q waves

Physiology

During dilated cardiomyopathy what happens to the heart's ability to pump and why?

It loses its ability to pump because the inner cavity of the ventricular chamber is so large that blood does not stretch the cells during diastole, so (by Starling's law) the muscle does not generate sufficient force/pressure to expel sufficient blood

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