What did Leonardo da Vinci discover about the human body?
Leonardo drew many studies of the human skeleton and its parts, as well as muscles and sinews, the heart and vascular system, the sex organs, and other internal organs. He made one of the first scientific drawings of a fetus in utero.[46] As an artist, Leonardo closely observed and recorded the effects of age and of human emotion on the physiology, studying in particular the effects of rage.
Scientists do not seem to know how to correlate the brain with any type of magical activity in the body. This may be because magic is rare, because most bodies are very basic, or because the degree of correlation for magic is pretty demanding.However, scientists do know that the body does some pretty magical things like synthesizing proteins and eliminating some types of toxins, as well as thinking and learning, although thinking is not yet fully understood.Scientists seem to know quite a lot about how hormones and genetics work, although it seems to me there is not a great deal of coherence about the meaning of it all. Evolution is still influential, and a good part of science goes into curing problems that seem fundamentally random or simply unfortunate.Perhaps it would be better if science tried to explain the value systems behind particular physical configurations, and the psychology behind developing problems. The psychology of problems may exist for the purpose of earning money from government, earning pity from relatives, as a form of self- or social-punishment, or because the things which seemed good were not available (that is, because of being idealistic and unrealistic, or because of a value system).There are complex problems in synthesizing knowledge, and as far as evidence-based research goes, it is fairly remarkable what has been accomplished. But it is likely large part of what is significant for individuals will remain proprietary and out-of-reach until there is something more serious for scientists to make proprietary. For example, perhaps some type of resource management or civilization-building.I personally think some things like inventing slinkies or band-aids could still be highly influential. It was only recently that someone invented an ironing board that doubles as a mirror. There is hope for radical changes, but whether science will accept it is another matter. It seems to me that there is far more room for radical theses than most scientists will admit. Simply because inventions are simple and some simple inventions have not yet been invented doesn’t mean that there is no room for unusual hypotheses.So, that’s my input.
Those people who can tolerate hot weathers are mostly in a good shape (not fat )Fat people tend to eat more food and by default burn more and produce calories that are more than they need so they feel good in winter but they can't stand the summer and sweat more than othersBut how about skinny people who doesn't feel cold at all and walk around in shorts and t-shirts in winterThose people are born with something called the brown tissue which is one of two types of fat or adipose tissue (the other being white adipose tissue) found in mammals.It is especially abundant in newborns . Its primary function is to generate body heat in animals or newborns that do not shiver. In contrast to white adipocytes (fat cells), which contain a single lipid droplet, brown adipocytes contain numerous smaller droplets and a much higher number of (iron containing) mitochondria, which make it brown. Brown fat also contains more capillaries than white fat, since it has a greater need for oxygen than most tissues.This tissue is present in newly born infants to protect them against hypothermia and after time (when we grow up) the mitochondria disappears and the tissue loses its unique function but in rare cases this tissue is not lost in adult people which makes them burn fat calories into heat which makes them in good shape no matter how they eat and makes them tolerate cold climates better than others
Anatomy & Physiology Question, Help?
the genes of animals are similar if they're aligned, their homology, and if you compare them to humans there are also various similarities. If you can study a gene in animals that is similar to humans then it helps you to understand the POSSIBLE similarity in mechanisms. Since animals, or at least "lower organisms" can have less genes than humans and are less complex an organism, along with the fact there's aren't as many ethical concerns, we can learn from them causes of mutations etc in genes. This leads to drug discoveries of how a drug could act on a protein that is expressed by a gene etc.
Anatomy and Physiology I?
This is Botany, and you'll do better with this if you post it in Biology. Right before you submit your question, there's an opportunity on the right of the page to choose a category (Science) and sub-category (Biology, Medicine, or Other--Science). Good luck! I like Bugsie's answer!
What are the similarities and differences between humans and animals repoductive system?
generally mammals (us, and land animals) are gender based. so you have a male and female where the female has eggs and male has sperm (similarity). the size of the egg and sperm differs in each species along with the number of chromosomes (difference). birds lay eggs (difference). humans give birth. in a lot of...aquatic animals, fertilization is outside of the body like fish laying eggs and then the male fish putting sperm on those eggs or look up the angler fish reproduction and see how different that is from us. crocodiles gender is detrmined after birth and is based on temperature, i think the same holds true for turtles (look that up), where as human reproduction the gender is determined on chromosomes. some animals are hermaphrodites (both male and female part on 1) in some animals the male carried the baby to term (like sea horses) if you are thinking in terms of the actual system like the physiology of the animals then you will have to look it up to see how different animals have different reproductive organs for example ducks have a very...unique penis (its actually quite gross) and the female ducks have mechanisms to avoid pregnancy...like they have a pseudo vagina (thats the best way i can describe it simply). also physiologically speaking in many animals the female is much larger then the male, unlike humans where generally the females are smaller then males. as for crustaceans...i am not really sure how that works
Technically, (sorry for playing devil’s advocate here), no one can tell you the percentage. A percentage by definition is a part of a whole. And if yet, no one knows the whole, then it is absolutely impossible for anyone to give you an exact percentage, let alone an estimate.