August172014
eyedefects:

Anterior hyphema, a collection of blood in the anterior chamber.

eyedefects:

Anterior hyphema, a collection of blood in the anterior chamber.

August102014
twisteddoodles:

Growing up.

twisteddoodles:

Growing up.

(via uaortho)

6PM

sixpenceee:

iniquity-incense:

sixpenceee:

Recently there’s been a case of bears walking upright like humans.

There are many theories as how and why a bear would walk bipedally one of them including the bear injured it’s front paws. 

This is the video for the above gifs

You can read about a more recent case here

That would freak me the fuck out if I saw that in the woods.

RISE OF THE PLANET OF THE BEARS!

6PM
sixpenceee:

WHY ARE MOTHS ATTRACTED TO THE LIGHT?
Phototaxis is an organism’s automatic movement toward or away from light. So a cockroach has negative phototaxis, because it’s always scuttling into dark corners while a moth has positive phototaxis because of it’s preference for bright lights.
Why are they attracted to bright lights?
We have several theories but no definite answers. Here are the theories:
Moths use the moon as a primary reference point to travel. So it’s attraction to the light maybe related to that orientation and cause disorientation. 
Moths may see flying towards the light as advantageous and safer than flying somewhere dark. 
Did you know moths are sensitive to ultra-violet light? A white light will attract more than than a yellow one. 
SOURCE & MORE INFORMATION

sixpenceee:

WHY ARE MOTHS ATTRACTED TO THE LIGHT?

Phototaxis is an organism’s automatic movement toward or away from light. So a cockroach has negative phototaxis, because it’s always scuttling into dark corners while a moth has positive phototaxis because of it’s preference for bright lights.

Why are they attracted to bright lights?

We have several theories but no definite answers. Here are the theories:

  1. Moths use the moon as a primary reference point to travel. So it’s attraction to the light maybe related to that orientation and cause disorientation. 
  2. Moths may see flying towards the light as advantageous and safer than flying somewhere dark. 

Did you know moths are sensitive to ultra-violet light? A white light will attract more than than a yellow one. 

SOURCE & MORE INFORMATION

6PM

Surgical operation, 1910 

Surgical operation, 1910 

(Source: dropboxofcuriosities, via beegoestomedicalschool)

5PM

teded:

How Tattooing Really Works

1. Tattooing causes a wound that alerts the body to begin the inflammatory process, calling immune system cells to the wound site to begin repairing the skin. Specialized cells called macrophages eat the invading material (ink) in an attempt to clean up the inflammatory mess. 

2. As these cells travel through the lymphatic system, some of them are carried back with a belly full of dye into the lymph nodes while others remain in the dermis. With no way to dispose of the pigment, the dyes inside them remain visible through the skin. 

3. Some of the ink particles are also suspended in the gel-like matrix of the dermis, while others are engulfed by dermal cells called fibroblasts. Initially, ink is deposited into the epidermis as well, but as the skin heals, the damaged epidermal cells are shed and replaced by new, dye-free cells with the topmost layer peeling off like a healing sunburn.

4. Dermal cells, however, remain in place until they die. When they do, they are taken up, ink and all, by younger cells nearby so the ink stays where it is.

5. So a single tattoo may not truly last forever, but tattoos have been around longer than any existing culture. And their continuing popularity means that the art of tattooing is here to stay.

From the TED-Ed Lesson What makes tattoos permanent? - Claudia Aguirre

Animation by TOGETHER

5PM
5PM
5PM

thelifeofapremed:

Post-Transcriptional Processing

•Only in the Nucleus for Eukaryotes

•Primary transcript processed in 3 ways:

–1. ADDition of nucleotides

–2. DELETion of nucleotides

–3. Modification of Nitrogenous Bases

•5’ cap and 3’ Poly A tail

•snRNP and the Spliceosome of Doom!

–INtrons = IN nucleus

–EXtrons = EXit the nucleus

DNA TECHNOLOGY

Clone Library = plasmid and replication

Polymerase chain reaction (PCR) : ‘fast’ cloning

•Heat to denature

•Mix with primers, let cool = primers hybridize

•Add polymerase to amplify complementary strands

Southern Blot

•1. Chop up DNA

•2. Efield to spread out pieces by SIZE

•3. Blot it!

•4. Add Radioactive DNA or RNA Probe

•5. Visualize on radiographic film 

GENETIC CODE

•Degenerative – more than one series of nucleotides may code for ANY A.A.

•Unambigous = one series of nucleotides = one A.A.

•Universal code!

•START! AUG

•STOP! UAA, UAG, UGA

•4^3 = 64 

–Ex. protein of 100 A.A. = there are 20^100 possible amino acids sequences for the protein 

(via medicalwatson)

5PM
medicalschool:

A human dendritic cell (blue pseudo-color) in close interaction with a lymphocyte (yellow pseudo-color). This contact may lead to the creation of an immunological synapse. The image was obtained using a field emission scanning electron microscope.

medicalschool:

A human dendritic cell (blue pseudo-color) in close interaction with a lymphocyte (yellow pseudo-color). This contact may lead to the creation of an immunological synapse. The image was obtained using a field emission scanning electron microscope.

(Source: download.cell.com, via medicalwatson)

5PM
5PM
educatedoaf:

brokestudentnurse:

Pretty sure that I will never fully understand this.

Awww I love this, it’s much easier to understand when you’re visualising extremes of whats happening, in hypotonic coniditions the RBC’s are like large blocks of salt ready to soak up any water thrown at them (lots of solute in the cell = water moving into cell).
In isotonic conditions everything is balanced and really chill so there’s no net movement.  
In Hypertonic, the red blood cells are really watery compared to their salty seadog surroundings and as such the water moves towards the salty (solute full) areas!

One of my biology examination material, this Wednesday.

educatedoaf:

brokestudentnurse:

Pretty sure that I will never fully understand this.

Awww I love this, it’s much easier to understand when you’re visualising extremes of whats happening, in hypotonic coniditions the RBC’s are like large blocks of salt ready to soak up any water thrown at them (lots of solute in the cell = water moving into cell).

In isotonic conditions everything is balanced and really chill so there’s no net movement.  

In Hypertonic, the red blood cells are really watery compared to their salty seadog surroundings and as such the water moves towards the salty (solute full) areas!

One of my biology examination material, this Wednesday.

(Source: magicmedic, via medicalwatson)

5PM

pubhealth:

WHO: Ebola Outbreak Is a Public Health Emergency

Today, August 8, the World Health Organization declared the Ebola outbreak in West Africa to be an international public health emergency that requires an extraordinary response to stop its spread. (Aug. 8)

(via beegoestomedicalschool)

5PM
“You’re still going to get criticized, so you might as well do whatever the fuck you want.” Kathleen Hanna (via wallflwr)

(Source: officialcourtneylove, via wallflwr)

August32014
you-ass-hat:

moody77186:

sixpenceee:

OFFICIAL FOX HORROR TUMBLR

Wanna watch this so bad

it is very good, totally plays with your mind

you-ass-hat:

moody77186:

sixpenceee:

OFFICIAL FOX HORROR TUMBLR

Wanna watch this so bad

it is very good, totally plays with your mind

(via sixpenceee)

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