common frilled shark (Chlamydoselachus anguineus) Where. The common frilled shark (Chlamydoselachus anguineus), an extremely primitive species native to all oceans of the world, has the longest recorded gestation period (pregnancy) of any animal species, namely 3.5 years.
Ketone bodies are two molecules, acetoacetate and b-hydroxybutyrate. The term. âketone bodyâ is historical: only acetoacetate is an actual ketone. Ketone bodies are. synthesized in the liver from acetyl-CoA. The brain is an important organ. It is metabolically active and metabolically. privileged. The brain generally uses 60-70% of total body glucose requirements, and. always requires some glucose for normal functioning.
Research indicates that the heart and kidneys prefer to use ketone bodies rather than glucose as a fuel resource. To dispose of excess ketone bodies, the body uses the kidneys to excrete them in urine, and they are exhaled from the lungs. During ketosis, ketones can easily be detected in the urine.