|
|
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.
Anesthesia awareness is a potentially disturbing adverse effect wherein patients who have been paralyzed with muscle relaxants may awaken. They may be aware of their surroundings but unable to communicate or move. Neurologic monitoring equipment that helps to more closely check the patient's anesthesia stages is now available to avoid the occurrence of anesthesia awareness.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.
![Gallbladder with gallstones. Note the stones in the hepatic duct, gallbladder, and common bile duct.](https://biology-forums.com/gallery/47/medium_14755_30_09_12_4_40_41_91531880.jpeg)
![Inflammation. Inflammation is characterized by the presence of swelling, redness, heat, and pain. Sw](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_18_45_10040570.jpeg)