#comparative anatomy

[reneserseya]

He’s a lot of boy

Stanley Cup Parade. Jack Eichel. (2023.06.18)

#vegas golden knights #jack eichel #jack eichel is a stanley cup champion #rnsgif #comparative anatomy

[pacificremains]

Baby and juvenile coyote skulls. Mixed dentition / double canines on the juvie!

#skull #vulture culture #oddities #animal skull #juvenile skull #teeth #coyote skull #baby skull #comparative anatomy

[corin-tuckers-left-one]

I just think homology obliterates intelligent design purely because structures that serve radically different functions have exactly the same parts in them and yet structures with the same function are composed of totally different parts.

Why do whales have finger bones?? What could they POSSIBLY need them for?? Primates use them to grasp, carnivorans use them for walking and running. In whales they're still there but hidden uselessly inside flippers.

Why are bird wings so different from bat wings if they're both used for flying?? Why are both of these completely different from insect wings??

Why do ALL of these except insects have the same layout of bones?? Humerus, radius + ulna, carpals and metacarpals.

It's like building planes out of boat parts.

#intelligent design #intelligent design creationism #creationism #young earth creationism #evolution #evolutionary biology #homology #homologous structures #anatomy #comparative anatomy

[kitchin-gryphin]

CatBoy Chaos Comparative Anatomy/Traits Post!!

I asked in the endnotes of ch. 3 of CatBoy Chaos if anyone would be interested in my thoughts about the anatomy of catboy! Danny in my fic, as someone studying animal science, and several people said yes- so here they are! Some things I’m going to talk about in this post have been mentioned in the fic already, but I’m going to elaborate more on them.

SO - Cats and Humans? Are very very different!! (shocker I know) Forcing the human body to have cat traits would realistically fuck you up real good! Just ears, a tail, and eyes is (quite literally,) surface level stuff, and imo a little boring! So here is a list with explanations of my version of Cat-Boy Danny’s traits :

1) Advantageous Cat Traits:

Improved Hearing, he can hear softer sounds, and tell directionally where sounds are coming from! (Directional hearing is something humans are really bad at)

Improved Smell! Cats obviously have a much better sense of smell than humans

Improved Night Vision - cat eyes means a “tapetum lucidum” -  a layer of reflective cells, and what causes cat’s eyes to “glow” in the dark!

Tolerance for Dehydration and Infrequent Blinking - Domestic cats descend from desert-dwelling wildcats. These traits are a result of that ancestry, and now Danny can win any staring contest!

2) Instincts!!

Discomfort with death - (mentioned in ch.2) - animals typically have an instinctual aversion to death, it’s an important survival instinct! For Half-ghost boy Danny, this makes using his ghost powers uncomfortable, and sets him on edge any time he uses them.

Prey Drive! - Cats are predators, they have a prey drive, this will be very fun for me to include, and potentially very embarrassing for Danny... 

Defensive Reactions - will absolutely hiss/bite before really thinking. Think fight or flight made more dramatic.

3) Complete Cat Dentition

Poor boy doesn’t just have the sharp “fang” canines of a cat, he has ALL cat teeth. Cats are carnivores!!! All their teeth are sharp!! 

This totally makes eating and chewing more difficult for Danny.

Hooked “sandpaper” tongue! He’s not going to lick himself, that’s gross, but he does have a hooked tongue! 

below is low quality drawing I did in class of cat vs human teeth:

4) New Dietary Considerations

Cats are OBLIGATE CARNIVORES!! On their own, cats cannot synthesize taurine - an amino acid that is absolutely vital to the body’s function! Danny’s meta gene removed his ability to synthesize it, he either needs meat in his diet, or to take a special taurine supplement. 

Regardless of wether or not he wasn’t before - Danny is ABSOLUTELY lactose intolerant now. Human’s common lactose tolerance into adulthood is unique in the animal kingdom.

Common cat poisons - In chapter 2, Danny gets sick after having a mocha latte - Coffee and Chocolate are two things cats cant have! He’s gotta be careful about what he eats now. Will everything bad for cats make him sick? No, but he doesn’t know what will or won’t.

5) Learned Muscle Control

Humans do have ear muscles, but they’re vestigial. Some people have a little control over them, which is why they can “wiggle their ears”. Suddenly for Danny, these muscles are no longer vestigial.

His tail is an entire appendage that he didn’t have before, 

Until he learns control of these muscles, any emotion shown by his tail or ears is involuntary and instinctual!!

6) Incompatible Skeletal Structure

Oh boy - human bipedalism is already such a mess structurally. From an engineering and structural standpoint, human hips and backs are so very messed up, (its why back pain is so very common). Adding a tail to that mix? yikes.... a tail is a continuation of the spine. Realistically, it would ABSOLUTELY cause severe chronic hip/back pain. It’s not something that’s going to to play a role in CatBoy Chaos, but know that i’m thinking about it and imagining how much ouch that would be.

NO RETRACTABLE CLAWS - YIKES EW NO. Retractable claws would BUTCHER human hands… A cat's retractable claws involve the bone that is equivalent to a human fingertip. I’m not doing that to Danny… ick, no, that would be really gross to me -

 here’s an image I found of what I’m trying to say - (Image Credit)

Also: some small notes about Danny and cat Stereotypes/Myths

“Cats Always Land on their feet” and landing unharmed from impossible heights - For cats, these are a result of directional awareness in the air, ability to “parachute” to slow descent, and the ability to “cushion” the impact when landing. Of these traits, the only one Danny could really have and still look like a catboy as opposed to a full-on anthro cat, is directional awareness in the air.

“Cats don’t like water” - This comes up in ch. 4, so minor spoiler until I post it this weekend, but ultimately Danny comes to his own conclusion that wet fur is not comfortable, and takes forever to dry.

“Cats & 9-lives” - well... he’s still a halfa...

Finally: Of course he purrs!!!

So There you have it! My thoughts about the anatomy of CatBoy! Danny in my fic CatBoy Chaos! 

If there’s any questions about my thoughts, I’d love to hear ‘em! 

#catboy danny au #catboy chaos #danny phantom #dp x dc #danny fenton #weird anatomy #comparative anatomy

[lindahall]

Réne-Antoine Ferchault de Réaumur – Scientist of the Day

Réne-Antoine Ferchault de Réaumur, a French naturalist, was born Feb. 28, 1683, in La Rochelle.

read more...

#Rene-Antoine de Reaumur #comparative anatomy #insects #crustaceans #histsci #histSTM #18th century #history of science #Ashworth #Scientist of the Day

[circadiancrunch]

A smoll skeleton and ecorche in progress. This has been sitting for actual years unfinished, ribless. I drew the ribs after work, and now I can start adding muscles.

#ecorche #mustang #kiger mustang #blm horse #horse anatomy #comparative anatomy #drawing #human artist #scientific illustration #natsci #sciart #Natural History illustration #horse skeleton

[here-be-dragons-and-whatnot]

Presenting the Ghaldfish

Here's the reason I drew gharials and goldfish. This is my work for assignment 2 from Terryl Whitlatch's Creature Design course on Schoolism. I definitely struggled with the muscular anatomy because there do not seem to be good resources for this information compared to mammalian tetrapods. I looked at vet textbooks, my personal collection of artist anatomy books, and even searched through academic papers but I have yet to find a definitive guide. There is some interesting stuff happening with their hips and legs--for example, they don't have glutes--so I definitely want to keep searching. And don't even get me started on fish! Did you know fish have hips right under their heads? Although I'm frustrated at how hard it can be to find basic information, I'm really enjoying the puzzle of figuring out the muscles and bones of creatures. Onto the next section!

#comparative anatomy #anatomy study #schoolism #schoolism course #creature design #goldfish #crocodile #gharial #muscles #bones #anatomy #terryl whitlatch

[ask-a-vetblr]

This may be a bit of an odd question. For context, I'm a human medical student. Do animals also have transitional epithelium in their bladders? Or do they have a different mechanism by which the bladder stretches? Or does it vary by species?

Sueanoi here,

This is a very interesting question!

Mammalian urinary bladder typically have transitional epithelium in them. At least as far as the relevant animals that are taught in vet school, such as dogs, cats, horses, etc. I do not know all mammals in the world but it's quite reasonable to think that if they have stretchy UB, they'd have transitional epithelium.

In contrast, avian animals don't even have the same structure that is equivalent to our UB. Their kidney waste is very dry when comparing to mammals that they didn't need to hold the content for that much volume. They excrete their nitrogen in uric acid form instead of urea, which is solid. It is excreted along with GI waste from their cloaca.

#comparative anatomy

[skulllesbian]

comparison of ante.lope dentition (from left to right: eland, oryx, duiker)

#vulture culture #comparative anatomy #animal dentition #antelope skulls #animal skulls #unfortunately the eland is missing most teeth .. #i also have a hartebeest but it's fixed to a plank rip

[salabanders]

Dodo's Squeletton

Natural History Museum - London

#photography #dodo #anatomy #comparative anatomy #you can just imagine so many things with this skull #pretty light #and building

[bones-n-bookles]

Plate LXIX of Lives of Game Animals by Ernest Thompson Seton in the coyote chapter of Volume 1 part 2

Left fore and hind feet of wolf and coyote at 2/3rd scale from dry skins

Shows four pen drawn paws, pad side up. From left to right they are wolf (fore), wolf (hind), coyote (fore), and coyote (hind)

#art #inspo #coyote #canis latrans #wolf #grey wolf #gray wolf #canis lupus #comparative anatomy #comparative study #ernest thompson seton #lives of game animals #love the way the fur swirls come across #taking notes for sure #paws #i need to study paws myself ugh

[reneserseya]

comparative anatomy

#comparative anatomy #mceichel #rnsgif

[pacificremains]

Turkey skull comparison: monster domestic male raised for meat, and average turkey.

#beetle cleaned #vulture culture #skull #oddities #animal skull #pacific remains #turkey skull #comparative anatomy

[dolivia]

Comparative Anatomy & Its Example To Understand Better

Comparative anatomy refers to the examination of differences among animal species to track evolution by studying how adaptive changes have taken place between species over time.

#A&P Class #anatomy & physiology classes near m #Comparative Anatomy

[amygdalae]

this is the only anime i care abt for a variety of reasons but especially because theres comparative anatomy (the coolest thing in the world to me)

#i love u comparative anatomy i love u bones mwah mwah mwah #i enjoy how marcille and laios get along best when sorting bones because its where their freak special interests intersect #dungeon meshi #dungeon meshi spoilers

[circadiancrunch]

It’s what it always is Help me finish any given project by joining my Patreon which is linked on my homepage. Pledge enough you get stickers and doodles and postcards. Maybe more eventually. Right now I’d like to just... finish the raccoon skull ID info page and the rodent anatomy stuff.

#it's always a raccoon #Comparative Anatomy #raccoon only club #trash panda