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Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

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The longest a person has survived after a heart transplant is 24 years.

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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

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When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

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Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

The major skeletal muscles—posterior superficial view. The major skeletal muscles—posterior superficial view.
After Pierre Courvoisier, View of Père Lachaise Cemetery from the Entrance. After Pierre Courvoisier, View of Père Lachaise Cemetery from the Entrance.
The oral cavity: (A) sagittal section; (B) anterior view as seen through the open mouth. The oral cavity: (A) sagittal section; (B) anterior view as seen through the open mouth.
Landmarks of the anterior thorax, anterior view Landmarks of the anterior thorax, anterior view
Sagittal section, medial view of the pons Sagittal section, medial view of the pons
Lateral view of right cerebral hemisphere Lateral view of right cerebral hemisphere
Video: Membrane transport proteins - pores, gated channels and pumps

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