Techniques for blood collection from the rat include puncture of the heart, retro-orbital plexus, jugular vein, saphenous vein, tail blood vessels, carotid artery, abdominal aorta, and vena cava.

Medically reviewed by Sanja Jelic, MD A PaO2 test measures partial pressure of oxygen, or PaO2—the oxygen pressure in ...

The fall caused the straw to go through Charlie's tongue and into his throat, and puncture his right carotid artery, which provides blood and oxygen to the brain. "I just saw blood on his face.