A body cavity is any fluid-filled space in a multicellular organism other than those of vessels (such as blood vessels and lymph vessels).The term usually refers to the space located between an animal âs outer covering (epidermis), and the outer lining of the gut cavity, where internal organs develop.rgans formed inside a coelom can freely move, grow, and develop independently of the body wall while fluid cushions and protects them from shocks. Arthropods and most mollusks have a reduced (but still true) coelom, usually the pericardial cavity and the gonocoel.
Bachelor's degree followed by M.D. or D.O. Field(s) of Study: Pre-med or biological sciences then medicine: Prerequisites: High school diploma or equivalent; satisfactory MCAT scores: Program Length: 4 years for bachelor's degree; 4 years for medical school; 3-7 years in residency and fellowships depending on specialty: Licensure/Certification
1 D.O.s, like M.D.s, choose to practice in a specialty area of medicine and complete a residency program ranging from 3-7 years. 2  Some D.O.s complete the same residency programs as their M.D. counterparts. 3  M.D. students take the USMLE exam and D.O. students take the COMLEX exam. D.O.s, like M.D.s, choose to practice in a specialty area of medicine and complete a residency program ranging from 3-7 years. 2  Some D.O.s complete the same residency programs as their M.D. counterparts. 3  M.D. students take the USMLE exam and D.O. students take the COMLEX exam.