This led to an enlarged liver, kidneys and "their corresponding morphological manifestations," the authors write. Essentially, carbs were scarce and fat was abundant. A 2016 study in American Journal of Physical Anthropology found that the Ice-Age diet is likely responsible for the larger ribcage and wider pelvis in Neanderthals. Neanderthals had wider, thicker rib cages than we modern slim-waisted humans, which would have made them terrible models for skinny jeans. RIBS ARE THE REASON NEANDERTHALS DIDN'T NEED BELTS. Thus, it's colloquially known as a " gorilla rib." 5. In rare cases, which have nothing to do with gender, a human might turn up sporting extra lumbar ribs, for a total of 13 pairs of ribs, much like our distant cousins, the gorillas. IN RARE INSTANCES, HUMANS CAN HAVE A "GORILLA RIB." However, women's ribs are about 10 percent smaller in volume on average than men's ribs. Gender plays no part in the number of ribs you have: It's 12 ribs for everyone. It's not true (and that story is sexist, anyway). In an effort to prove the Bible story of Eve as wrought from Adam's rib "true," pastors and Sunday School teachers sometimes pass along a tale that women have more ribs than men. Ribs 11 and 12 are called "floating ribs" because they only connect to the spine in back. Ribs 8 to 10 are called "false ribs" because they don't connect directly, but have cartilage that attaches them to the sternum. Working from the top of the torso down, ribs 1 to 7 are considered "true ribs," as they connect directly from the spine to the sternum, Martinez says. "They function similarly to the bucket handle on a bucket and swing upwards as we take a breath, allowing the thoracic cavity to expand." This increase in the thoracic cavity makes it easier to take a breath. The ribs allow chest expansion for breathing, Martinez explains. Mental Floss spoke to John Martinez, MD, an urgent care provider with Dignity Health Medical Foundation in California for these nine fascinating facts about the ribs. Ribs are protective on the one hand, but if badly broken, your ribs can turn lethal to you, piercing your organs. Ribs are not just an incredibly tasty order on the menu at the nearest steak house: These bony spindles in your torso attach to your sternum (breast bone) to protect your lungs, heart, spleen, and most of the liver and help with giving shape to your chest cavity, which assists in breathing.
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