Discovery of Circulation of Blood

Discovery of Circulation of Blood

The ancient greek Galenist view of the movement of blood round the body; Versalius, Fabricuius and Fallopius and their studies of human anatomy. The emergence of William Harvey and how he drew on the work of his predecessors to discover how blood circulates in the human body. A description of some of Harvey’s practical experiments including tying a ligature around a forearm and interpreting the outcome.

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Mammals, Endotherms and Warm Blood

Mammals, Endotherms and Warm Blood

‘Warm blood’ and an explanation of what it means to be endothermic. How homeothermic endotherms are able to maintain a constant body temperature within a narrow temperature range; the strong relationship between ‘mass specific basal metabolic rate’ and body mass; surface area to volume ratios; mechanisms by which the body loses and gains heat; abandoning endothermy by hibernation and torpor.

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Reptiles, Ectotherms and Cold Blood

Reptiles, Ectotherms and Cold Blood

What makes reptiles ‘cold blooded; why ‘ectothermic’ is a more accurate description of reptiles than ‘cold blooded.’ How ectotherms ‘thermoregulate’ their core temperatures by adopting different types of behavior. Physiological adaptions of ectotherms including changing skin color, freeze avoidance and freeze tolerance. Why ectotherms make excellent ambush predators. The hearts of ectotherms.

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