zamknij [x]
do:

Medycyna (729)

12
456... z 37

Zdjęcia

EN_00957730_3346 PHO
An ' stylized depiction of a retrovirus, consisting of a geomic nucleic acid, RNA or DNA (here RNA, in violet), and surrounded by capsid proteins (orange-yellow), surrounded by a glycoprotein envelope. Examples of retroviruses are the flu virus, the AIDS virus, and the SARS virus (depicted here). Viruses can only reproduce by invading and taking over other cells, as they lack the cellular machinery for self-reproduction.
EN_00957730_3347 PHO
An illustration of the key component of the nervous system, the neuron. Neurons have a large number of extensions called dendrites; branches of the neuron cell body that can be long, or very short to act as chemical message receivers from other neurons. The main extension here is the axon, the purpose of which is to transmit electro-chemical signals from one neuron to another neuron. Long axons are covered by a myelin sheath, a fatty substance that covers the axon and insulates it. Shown here is the connection between one neuron (center) and a foreground neuron body. At the end of the axon ending, the bouton, a synapse with the dendrite of the foreground cell is taking place. Across this synapse, very small neurotransmitters (red) cross this gap into the next neuron, creating the nervous system message transferral system.
EN_00957730_3348 PHO
An illustration of the key component of the nervous system, the neuron; human brain in the background. Neurons have a large number of extensions called dendrites; branches of the neuron cell body that can be long, or very short to act as chemical message receivers from other neurons. The main extension here is the axon, the purpose of which is to transmit electro-chemical signals from one neuron to another neuron. Long axons are covered by a myelin sheath, a fatty substance that covers the axon and insulates it. Shown here is the connection between one neuron (center) and a foreground neuron body. At the end of the axon ending, the bouton, a synapse with the dendrite of the foreground cell is taking place. Across this synapse, very small neurotransmitters (red) cross this gap into the next neuron, creating the nervous system message transferral system.
EN_00957730_3349 PHO
Illustration depicting the human heart.
EN_00957730_3350 PHO
Illustration depicting a technique for treatment of vertebral compression fracture called balloon kyphoplasty. This minimally invasive treatment can relieve pain and improve quality of life in patients with these fractures.
EN_00957730_3351 PHO
This is an illustration of a vertebral compression fracture.
EN_00957730_3352 PHO
Illustration depicting the human heart.
EN_00957730_3353 PHO
An illustration of the key component of the nervous system, the neuron; human brain in the background. Neurons have a large number of extensions called dendrites; branches of the neuron cell body that can be long, or very short to act as chemical message receivers from other neurons. The main extension here is the axon, the purpose of which is to transmit electro-chemical signals from one neuron to another neuron. Long axons are covered by a myelin sheath, a fatty substance that covers the axon and insulates it. Shown here is the connection between one neuron (center) and a foreground neuron body. At the end of the axon ending, the bouton, a synapse with the dendrite of the foreground cell is taking place. Across this synapse, very small neurotransmitters (red) cross this gap into the next neuron, creating the nervous system message transferral system.
EN_00957730_3354 PHO
An illustration of the key component of the nervous system, the neuron; human brain in the background. Neurons have a large number of extensions called dendrites; branches of the neuron cell body that can be long, or very short to act as chemical message receivers from other neurons. The main extension here is the axon, the purpose of which is to transmit electro-chemical signals from one neuron to another neuron. Long axons are covered by a myelin sheath, a fatty substance that covers the axon and insulates it. Shown here is the connection between one neuron (center) and a foreground neuron body. At the end of the axon ending, the bouton, a synapse with the dendrite of the foreground cell is taking place. Across this synapse, very small neurotransmitters (red) cross this gap into the next neuron, creating the nervous system message transferral system.
EN_00957730_3575 PHO
Illustration showing pregnant patient with epidural in place for labor pain relief. Evidence of fever on patien'ts face.
EN_00957730_3655 PHO
Conceptual image of junk food passing through the arteries into the heart.
EN_00957730_3811 PHO
Conceptual illustration depicting the spread of disease throughout the world.
EN_00957730_3812 PHO
Conceptual illustration depicting the spread of disease throughout the world.
! EN_00952097_0882 IKO
Zeros and ones in center of germ cell
EN_00935564_0039 BSI
Birth of love desire. Representation of what it happenning in the brain at the birth of love desire. Blue arrows : The hippocampus (memory area, in yellow) and the amygdala (centre of emotions, in purple) send information to the prefrontal cortex (centre of reasoning and decision-making, in green), that stimulates on its turn the hypothalamus (centre of corporal and hormonal reactions, in blue). The body is bombarded of hormones. Reactions : heart palpitations, red on the cheeks, legs trembling... Red arrows : stimulated by the secretion of dopamine (see level of secretion in the tube on the left of the illustration), the nucleus accumbens (pink area) stimulates the brain and the prefrontal cortex to push for action. Green arrow : The prefrontal cortex (centre of reasoning) moderates the action of the nucleus accumbens.
EN_00914102_0285 VU
A caduceus with capsules and pills with dollar signs -- concept of the high cost of prescription medication.
EN_00914102_4312 VU
Futuristic surgery; removing a growth from the fallopian tubes.
EN_90286236_0272 PHO
Conceptual image representing frequency. Sound byte on a grid moving through an ear.
EN_90286488_0004 PHO
Two cytotoxic T-cells attack a single cancer cell. T-cells are lymphocytes originating in the thymus. They come in a variety of types and play a role in the immune system.
EN_90286488_0003 PHO
Hepatitis C viruses floating in a microscopic space.

góra

12
456... z 37