The inside surface area is shaped in a crescent. It consists of a spiral valve which is made up of the small intestine. Although the dogfish shark has a relatively short small intestine compared to other animals, therefore, the spiral valve allows for a more compact form of the small intestine.
Hence, this structure provides maximum surface area over a relatively short distance in order to make the absorption of nutrients efficient achieved from the food, the sharks had from eating different sea animals.
Answer:
Many parts of the cardiovascular system (including the heart) are influenced by gravity. On Earth, for example, the veins in our legs work against gravity to get blood back to the heart. Without gravity, however, the heart and blood vessels change – and the longer the flight, the more severe the changes.
Anemia- The Bone Marrow stops making red and white cells and platelets for the body.
People with severe or very severe are in risk of life threathing infections and bleeding.
Leukemia- Is a cancer to blood or bone marrow .Large numbers of white cells are produced in the bone marrow and crowd it and the bloodstream and they cannot perform the proper role of protecting and fitting against diseases.Blood has to go everywhere to bring to body what it needs, making it a stuff cancer.
Major progress and been made targeting this cancer, take the blood out of the body, separate your cancer blood from your good blood, better ways to kill only the bad blood, make more good blood faster, relax your body, mind, improved immune system.
A ribosome is a cell organelle. the function of a ribosome is like a micro-machine for making proteins. the ribosomes is composed of special proteins and nucleic acid. it is also formed from two sub units, locking together its function are to translate the encoded information from the cell nucleus provied by the messenger.
They are different ranks in a taxonomy hierarchy. The genus is more exclusive than the phylum.
Order:
Domain,
Kingdom,
Phylum,
Class,
Order,
Family,
Genus,
Species
