Category Archives: Physiology

Simplifies the physiology of animals by using object oriented models i.e. wash basins and drinking milkshakes!

The key to understanding the neurotoxicity of snake bites: why is the mongoose immune to cobra venom (Part 3)

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In the final post on the snake venom topic we will discuss how the mongoose has been able to overcome the neurotoxic effects of cobra venom. We have learnt how ACh fits into the shape of the specific shape of … Continue reading

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The key to understanding the neurotoxicity of snake & spider bites (Part 2)

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In this blog we will discuss how different neurotoxins (snake & spider) can interfere with nerve impulse conduction & muscle contractions. We will do this using the wash basin model  to see how toxins change the effective ACh concentrations at … Continue reading

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The key to understanding the neurotoxicity of snake & spider bites (Part 1)

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I want to briefly discuss the biochemistry underlying the toxic effects of venoms trying to explain basic concepts with my beloved wash-basin analogy & also the lock & key theory. Snake & spider venom contain various toxic substances. These via … Continue reading

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Birth in Australopithecus, apes, & man: a passage over time (part 3)

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We have in the previous two parts of this 3 part series on the passage of babies through the birth canal briefly discussed the process as well as the differences  in labor between humans & the giant apes. The title … Continue reading

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Birth in Australopithecus, apes, & man: a passage over time (part 2)

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Walking into trouble: birth in higher primates. Birth of their baby is usually fast & uncomplicated in higher primates such as gorillas, chimpanzees, & orangutans. However in man the birth is usually prolonged and obstructed labor a common problem, with … Continue reading

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Birth in Australopithecus, apes, & man: a passage over time (part 1)

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I would like to discuss the differences between the birth of a baby in humans & the great apes e.g. gorillas, chimpanzees, & orangutans. In this part 1 we will first look the normal birth process. In part 2, I … Continue reading

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Not too hot and not too cold: mammals (endotherms) in the Kalahari. (Part 6)

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The Kalahari Desert can get extremely hot in summer & very cold in winter. Large & small mammals in the desert maintain their optimal temperature despite these large changes in ambient temperature. As we have previously discussed in the reptiles behavioral mechanisms … Continue reading

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