Could you direct me to some blogs about human anatomy? I'm curious about the purpose of the cupid's bow in lips, but my searches are only coming up with cosmetics discussions or people critiquing if they love or hate them.
Hey followers, help out pyranova and leave your favorite human anatomy blogs (not the NSFW kind, the science kind) in the reblogs/notes! The hive mind is always much smarter than me when it comes to matters like these :)
I’d rather talk about “Cupid’s bow”:
Named for its resemblance of a particular winged cherub’s amorous armament, the pinched curve of the upper lip is sometimes referred to as “Cupid’s bow.” It’s formed by the meeting of the upper lip with that little dimple that nearly all of us have beneath our nose, known as the philtrum.
So what does the philtrum do, besides look cute?
Nothing. Not for humans anyway.
The philtrum, our lip dimple (limple?), is just a byproduct of how your face formed. Early in your development, just a few weeks after you were put in the uterine oven to cook, your face began to take shape. Cells and tissues from the outer and middle layers of your still-formless body migrated and folded like sheets of embryonic origami. Two of those early tissues, called the nasomedial prominence and maxillary prominence, respectively, folded up like a cellular cinch-sack, with the tiny dimple beneath your nose being the seam where all that dermal dough was pinched together to make your face pastry. Follow me? It happened like so:
When this seam fails to fuse, it results in malformations like cleft lip.
The philtrum has a function in other animals, though. Let’s use my dog Oliver as an example, captured here in a particularly derpy moment this evening while we were playing fetch:
See that groove in the center of his nose? That’s his philtrum. Every time he licks his lips, a bit of saliva hangs there, drawn upwards from his mouth thanks to capillary action, keeping his big, dumb, adorable nose nice and wet. Animals like Oliver, who apparently depends highly on his sense of smell to navigate the world despite his uncanny ability not to be disgusted by his incredibly potent, but thankfully occasional, flatulence, rely on a wet nose to capture scent particles from the air. Dry nose? Less sniffs to sniff.
Since humans and higher primates rely mainly on eyesight to do our primate stuff, we are no longer under evolutionary selection to have a functioning, deeply grooved philtrum, so it’s faded over time into the dimple we know and (most of us) love today. Stephen Jay Gould might even have called it a spandrel.
Come to think of it, it may have an evolutionary function after all: It’s where you rest your finger when you say “Shh, Joe… be quiet. You’ve written enough.”
sippngwaterfalls said: do you have tips for under eye concealer and creasing? I’ve tried multiple primers, using a setting powder, etc but it still seems to crease :(
Creasing is one of (in my opinion) the worst traits in makeup, and there’s nothing more annoying than perfectly applying eyeshadow only to find that it’s a hot mess within a few hours or covering your dark circles so they’re nowhere to be seen, only to end up with what looks like intense wrinkles underneath your eyes. Creasing is a pain, but some of these products & techniques could be your saving grace.
Hi Joe!! Right now, I have a really horrible Calculus teacher, and I was wondering if you knew of any websites that can help me learn everything he didnt teach us before the midterm!! Thanks!
Eesh, I haven’t thought much about calculus since calculus class. Sorry your teacher can’t derive their way out of a paper bag.
Khan Academy, obvs, but I also recommend everyone check out Open Culture’s list of free online courses (scroll down for the math courses). It puts a cornucopia of learning at your fingertips. Bookmark that page. It’s glorious.
So I’ve reblogged a bunch of Bersih 4 rally stuff, and I thought you guys might like to know what’s up with that. I’m not particularly well-versed in this, but here are the basics:
Earlier this year, the Malaysian Prime Minister, Najib (I refuse to use honorifics), was reported by Wall Street Journal to have transferred RM2.6 billion (that’s about $700 million) out of a government-run development company, 1 Malaysia Development Berhad, into his own personal accounts. Yes, under his own name.
One month later, he claimed that this RM2.6 billion was, in fact, donations, primarily from Saudi Arabia as thanks for fighting ISIS. A different government official claims to have seen the cheque with his very own eyes. (Dude, who writes cheques for $700 million? Also, why would donation money go into the prime minister’s personal accounts, and not that of the government or the political party?)
The worst part is that the government is shutting down everyone who dares speak out about this. The Sarawak Report, the website that had been primarily involved with exposing all this, was blocked. The Edge, a newspaper that had been reporting about this 1MDB scandal, has been suspended. Government ministers critical of the scandal have been removed from their positions. Even the attorney general heading the investigation into the scandal was, without warning, forced to resign. (Literally, he walked into the office and was told he wasn’t supposed to be there.)
Bersih means clean in Malay; the Bersih 4 rally is a huge protest by the Malaysian people who are infuriated by the actions (or lack thereof) being taken to punish the prime minister for his crimes. Bersih 4′s five demands are:
1. Free and fair elections 2. A transparent government 3. The right to demonstrate 4. A stronger parliamentary democracy system 5. The rescue of the national economy
There’s still so much more that’s happened. This is Bersih 4, this is the fourth time Malaysians have felt the need to protest against a corrupt government. Even now, we are being oppressed, forced into silence.The newspapers and radio stations cannot report anything that casts the government in a bad light for fear of having their publishing license revoked. Just wearing a Bersih 4 T-shirt is now illegal.
Bersih protesters hate Malaysia, Najib says.I am Malaysia is what he means. How dare you oppose me? How dare you say I am at fault? How dare you use your brains and think for yourselves? How dare you protest for your rights? How dare you make the news? How dare you show the world that Malaysians hate their leader?
How dare you try to strip my power away?
There is little hope that things will change. Honestly, we can protest all we like; it doesn’t matter. The government doesn’t care about us. They will not change. But we cannot roll over and let this happen. We cannot stand by and watch as our country crumbles. We have to do something, we have to fight for change, because if we don’t, then who will?
We love our country, even if our country does not love us.
do we share a common ancestor with plants because we're both eukaryotes or have i misunderstood something?
We do share a common ancestor with plants! Everything shares an ancestor with everything else. We call it LUCA, for Last Universal Common Ancestor (sometimes called just LUA). At least, that’s what the most widely-supported theories say.
That LUCA would have resembled a very basic modern bacterium, with a circular genome (as opposed to ours, which is in 46 linear pieces) and would have lived on Earth about 3.5 billion years ago.
Eventually, some single-celled organisms gulped up small bacteria and used them as internal energy factories. Eventually, those enslaved power plants became mitochondria, which retain their bacterial-type circular genomes today. The parent cells walled off their own DNA inside a nucleus at about the same time, transforming into eukaryotes. Some of those eukaryotes then swallowed up photosynthetic cyanobacteria to go along with their mitochondria, and that was the origin of plants.
Here’s a nice little diagram of how we think it all went down, via Wikipedia:
As for the transformation from single cells to multicellular splendor? That’s a (mostly mysterious) story for a different day.
Brent was quick to place a finger over his lips when Valentina entered the room after a soft knock, gesturing toward the bed with his head. Barbara was finally sleeping for the first time since she had been fully dilated and the nurse would be coming in with Beau to nurse in a couple of hours. He wanted her to get as much rest as she could in the meantime. He stood from the chair and helped his sister place the various gifts that she was carrying onto the counter. Leave it to Valentina to come bearing teddy bears, balloons, flowers and a large box of chocolates. It was a wonder that she had been able to carry it all up to the Labor and Delivery Unit.
Beckoning his sister to follow him back into the hallway of the maternity ward, he spoke once he had carefully shut the door. “The baby’s in the intensive care nursery.” Before Valentina could fret too much, he assured, “He’s fine, but there was a bit of abnormality with his heart rate so they wanted to keep an eye on his vitals for the first 24 hours.” The new parents had been assured that it was nothing to be too concerned about and that after that period, he could stay in the room with them in a warmer until Barbara and the baby were released to go home.
He had only made a handful of calls once the baby was born. One to Valentina, another to Ruben, and then the rest to his cousins that he knew would want to hear the announcement from him. “We can go see him, if you want, since it’s still visiting hours.”
Valentina quirked up a brow, shining grin in place. “Is that even a question? What are we wasting time for?”
Nodding as an acquiesce, Brent started down the path to the nursery. He was tired and ought to try and sleep himself, but there was a swell in his chest cavity that expanded throughout him, an adrenaline that was keeping him awake and aware of the enormity of it all.
Waving his wrist over the sensor in front of the nursery’s door, his identification band was recognized and the lock clicked. Once they were inside, Brent headed straight to the sink to began washing his arms all the way up to his elbows. He waited for Valentina to do the same before he guided her over to a corner of the room. There were units lined up all along the room, newborns that were being fed or having routine tests run on. The one in front of them was sleeping, a light shining on him to keep him warm, swaddled up tight in a blue blanket. “Valentina,” His gaze kept focused on the baby as he spoke quietly to his sister, finding it difficult to tear his attention away. “I’d like you to meet Beau.”
“Beau?” Valentina repeated as she peered into the warmer, awe coloring her tone.
“Mm. Barbara wanted to stick to the B scheme. Beau Griffiths.” It was a nice sounding name, pleasant in his mouth when he spoke it. There was none of the harshness that existed in Brent’s own name. It was fitting for the softer upbringing that Brent wished to provide for his son. Severing him from the Nott name was a good decision. It didn’t make Beau any less his son any more than Brent bearing Richard’s name in both his middle and last name had made Richard his father. It went beyond biology, Brent was beginning to learn. From this day forward, Brent had already made the decision that he wold only call Richard Nott by his name, not by Father as he had all his life. Richard was not deserving of the title and Brent couldn’t know if he was yet either, but if the first gift he could present his son with was freedom from expectation then he could only hope he was off to a decent start.
Brent reached into the pod, gingerly lifting up the baby and positioning him so that his head was in the being supported by the crook of his arm. He then turned to Valentina in indication that he could pass Beau off to her.
“He’s so small,” Valentina commented before opening up her arms, Brent settling the baby against her. As his sister began to cradle the baby and coo at him, Brent’s shoulders sagged with an ease that he hadn’t expected to wash over him. There was still a trace of apprehension, of uncertainty, but he wasn’t alone.
He had a family. Small as it may be, its significance outweighed any other aspect of his life, far beyond his incoming N.E.W.T. scores that would determine his future career pursuits.
“You and I are going to be best buds,” Valentina assured her nephew, little eyelids fluttering open and a tiny arm stretching outward, mouth opening up in a yawn. There was a fluttering, then, that bubbled out of Brent’s own mouth in a fond chuckle. “And I’m going to spoil you so hard and I’ll read you all the best books…”
As his sister prattled on to the newborn who couldn’t even begin to comprehend what she was saying, Brent’s visage softened and he swallowed thickly. The future seemed to stretch in front of him in that instance, bright and hopeful.
Valentina turned her eyes to her brother with a devious smile. “Better get your dad jokes ready.”
He was far from known for his humor and they both knew it. “I think I’ll leave those to you. You will be his favorite aunt, after all. It only seems fitting that you make him laugh.”
She’s just going to…Stealthy back away from the kid, this wasn’t something Ruby had dealt with since Jaune first threw up in the airship on their way to Beacon, and she really wasn’t keen on getting vomit on her.
Is it even _theoretically_ possible for time travel to exist, without resorting to overly artificial and theatrical rules governing it? If yes, how does one resolve things such as the Grandfather Paradox?
Need a refresher on the Grandfather Paradox? Watch this:
The thing about a paradox is that it’s not easily resolvable. That’s why it’s a paradox. In my opinion, you have to do some pretty theatrical backflips in logic to make sense of something like this. Say you go back in time and (try to) kill your grandfather, there either must be a parallel universe where that didn’t happen or you will fail in your attempt in order to preserve the current timeline. The idea the paradox is based upon is pretty artificial. It’s not impossible, just artificial.
Really wanna bend your mind in half? A classical, but imperfect principle of physics states that matter can not be created or destroyed. Then aren’t there more atoms in that universe if you travel back in time and meet yourself, defying the laws of physics? Hmm? I’m not certain, because my understanding of relativity and mass is not that high level.
This is why many scientists think that traveling back in time is impossible. The paradoxes would be infinite and unresolvable. Of course, traveling forward is still fine, in theory (even though we’re doing it all the time, at 1 second/second). Bring me back a sports almanac.
As a college student working towards his BS in Cell Biology (with dreams of med school!) what would your advice be to those of us that are terrible at looking up research articles? I can describe Sanger-Coulson sequencing or the isolation of mature mRNA in my sleep but trying to find research articles relevant to what is being worked on in lab (which is one of my assignments this semester for molecular biology) is like asking me to get blood from a stone. Help :(
It’s tough to keep up with research publications these days. Even for experienced scientists. As of today, PubMed (the NIH peer-review database) lists 39,832 journals. Obviously most of those are junk, and many are idle, but it’s still too much to keep up with.
Wanna get close? Here’s my methods:
Learn to love Google Scholar. Lots of nontraditional and out of print stuff there in addition to normal journals.
Play around with PubMed. It’s so much more than a simple “type in box, hit enter” search tool. You can save searches as RSS feeds or email alerts, so you know when something new comes out based on a certain search. Also learn to use MeSH terms to narrow your searches.
Star using a social reference manager like Mendeley. You can follow other people in certain fields, synch your papers in the cloud, and use their social tools to discover things you’d never find. They have web, mobile and desktop apps, too.
Understand that you can’t read everything, and never will.