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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
The FDA recognizes 118 routes of administration.
Did you know?
Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.
Did you know?
Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
![Thoracentesis. A needle is inserted between the ribs to withdraw fluid from the pleural sac at the b](https://biology-forums.com/gallery/47/medium_14755_10_09_12_7_14_27_84951238.jpeg)
![GI endoscopy. (a) Similar to other forms of GI endoscopy, laparoscopy involves the insertion of a sp](https://biology-forums.com/gallery/47/medium_14755_26_10_12_5_23_54_96921540.jpeg)
![Aneurysm. Photograph of the aorta, the large blood vessel arising from the heart, with a large bulge](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_14_25_100201378.jpeg)