April142014

(Source: memewhore, via thefuuuucomics)

April12014

death-by-lulz:

Featured on a 1000Notes.com blog

I’m in the best shape of my life!

(Source: tastefullyoffensive)

10AM
10AM

DO NOT UPGRADE TO TUMBLR PRO

catoverlord:

azuraracon:

themicrobit:

Read More 

SHIT SHIT SHIT I SHOULDN’T HAVE DONE IT ;A;

wow fuck are you fucking serious

(via best-of-text-posts)

March252014

Note to self…..

Don’t go out to eat when you’re sleep deprived and depressed about the test you royally fucked up! You spend way too much!!!!!! Oh emm gizzle!!! Why did I allow that to happen!!!!!! That makes TWO fuck ups for the day!!!!! This weekend cannot come soon enough; I might forgo the wine and go straight to liquor.

March192014

Haha whoopin time

(Source: justinscrew, via dutchster)

March122014
thelifeofapremed:

MCAT Immune System (Specific Defenses) Review
Adaptive immunity: highly specific response to pathogen/antigen
Antigen presenting cells (APCs) present foreign antigen on their surface → antigen is recognized by T and B cells → cytotoxic T cells kill infected cells → helper T cells activate macrophages (engulfs pathogens), T cells, and B cells 
B cells produce antibodies 
Antibodies binding to antigen affects:
Neutralization: pathogens can not attack the host cells
Opsonization: phagocytosis can occur easier 
Complement activation: kills infected cells by puncturing holes on the membrane
Memory cells: made without T cell activation 
Proliferate and produce antibodies to prepare for same infection in the future 

Immune system review videohttp://youtu.be/Nw27_jMWw10

thelifeofapremed:

MCAT Immune System (Specific Defenses) Review
Adaptive immunity: highly specific response to pathogen/antigen
Antigen presenting cells (APCs) present foreign antigen on their surface → antigen is recognized by T and B cells → cytotoxic T cells kill infected cells → helper T cells activate macrophages (engulfs pathogens), T cells, and B cells
B cells produce antibodies
Antibodies binding to antigen affects:
Neutralization: pathogens can not attack the host cells
Opsonization: phagocytosis can occur easier
Complement activation: kills infected cells by puncturing holes on the membrane
Memory cells: made without T cell activation
Proliferate and produce antibodies to prepare for same infection in the future

Immune system review video
http://youtu.be/Nw27_jMWw10

(via nursingisinmyblood)

2PM

Puppies!!!!

(Source: ohhellnobro, via dutchster)

March112014
10PM

scienceyoucanlove:

ANATOMY OF OUR GENES: The Human Body

The human body is made of some 50 trillion to 100 trillion cells, which form the basic units of life and combine to form more complex tissues and organs. Inside each cell, genes make up a “blueprint” for protein production that determines how the cell will function. Genes also determine physical characteristics or traits. The complete set of some 20,000 to 25,000 genes is called the genome. Only a tiny fraction of the total genome sets the human body apart from those of other animals.

Most cells have a similar basic structure. An outer layer, called the cell membrane, contains fluid called cytoplasm. Within the cytoplasm are many different specialized “little organs” called organelles. The most important of these is the nucleus, which controls the cell and houses the genetic material in structures called chromosomes. Another type of organelle is mitochondrion. These “cellular power plants” have their own genome and do not recombine during reproduction.

Chromosomes

Chromosomes carry hereditary, genetic information in long strings of DNA called genes. Humans have 22 numbered pairs of chromosomes and a single pair of sex chromosomes—XX in females and XY in males. Each chromosomal pair includes one inherited from the father and one from the mother. If unwound, the microscopic DNA strands in one cell’s nucleus would stretch to over six feet (two meters) in length.

DNA

DNA (deoxyribonucleic acid) is the set of genetic instructions for creating an organism. DNA molecules are shaped like a spiral staircase called a double helix. Each stair is composed of the DNA bases A, C, T, and G. Some segments of these bases contain sequences, like A-T-C-C-G-A-A-C-T-A-G, which constitute individual genes. Genes determine which proteins individual cells will manufacture, and thus what function particular cells will perform. 

read more, photos and info from Nat Geo

(via nursingisinmyblood)

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