humandisastersquad:
humandisastersquad:
rabbiteclair:
rabbiteclair:
rabbiteclair:
The median artery is an artery that is occasionally found in humans and other animals. [1] It is present in 35% of individuals born in the late 20th century. [2]
occasionally I’m reminded that biology just sucks to think about
patients often experience disruptions to splenic development during embryogenesis, resulting in an overall lack a spleen (asplenia) or development of many spleens (polysplenia)
hey what the fuck
people are like ‘aspects of biology and human anatomy need to be nearly delineated and sorted into distinct boxes’ and then actual biology is like 'roll 2d3+2 to determine how many artery branches your cerebrum has’
OP how could you leave out the fact that an accessory/additional spleen is called a splenunculus (plural: splenunculi) aka one of the most fun words to say out loud
Also [gestures at the left recurrent laryngeal nerve] what the fuck
This bastard loops down from the neck, under the aorta and then back up to the larynx. Not the right one though, it understood the assignment and goes directly to the right side of the larynx. This is a leftover from our fish-like ancestors where the nerve would have taken a more sensible route directly from the brain, past the heart and to the gills.
Oh yeah, and bc this ancestor was so early in our evolutionary tree, this weird quirk is preserved across numerous species including the giraffe, with a length of 4.6m, and even in dinosaurs, with sauropods estimated to have a left recurrent laryngeal nerve length of at least 28m.