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Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Salt marsh channels shown in cross section. Salt marsh channels shown in cross section.
Placenta previa, longitudinal section showing the placenta growing over the opening into the cervix. Placenta previa, longitudinal section showing the placenta growing over the opening into the cervix.
The vocal cords within the larynx, superior view from the pharynx. The vocal cords within the larynx, superior view from the pharynx.
Transverse Abdominal Section Transverse Abdominal Section
A Corner of the General Massage Section of an Army Hospital. A Practice of Physiotherapy by Sampson, ... A Corner of the General Massage Section of an Army Hospital. A Practice of Physiotherapy by Sampson, ...
Sagittal section through brain and spinal cord showing the reticular formation Sagittal section through brain and spinal cord showing the reticular formation
Video: Energy Flow - Trophic Levels and Food

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