Bio 252 Exam 3 Questions And Answers

Bio 252 Exam 3 Questions And Answers long bones - ANS bones of the arms and legs (longer then they are wide) Diaphysis - ANS shaft of a long bone Periosteum - ANS A dense fibrous membrane covering the surface of bones (except at their extremities) and serving as an attachment for tendons and muscles. compact bone - ANS dense, hard layers of bone tissue that lie underneath the periosteum (in diaphysis). Densely packed osteons marrow cavity - ANS space in the diaphysis of a long bone that contains bone marrow Alive (marrow has reproducing cells and blood supply does go to bone) - ANS Is bone tissue dead or alive? red marrow - ANS More common the long bones of children. A fibrous tissue of hematopoietic stem cells. Produces RBC's yellow marrow - ANS soft, fatty material found in the medullary cavity of long bones (in adults). Mesenchymal stem cells and adipose cells Endosteum - ANS membrane lining the medullary (marrow) cavity of a bone nutrient foramen - ANS small opening in the middle of the external surface of the diaphysis, through which an artery enters the bone to provide nourishment Dinosaurs have large nutrient foramens (warm blooded animals need a larger blood supply, dinosaurs have similar blood flow to warm-blooded animals) - ANS What is the argument for dinosaur being warm-blooded? Epiphysis - ANS the end part of a long bone, initially growing separately from the shaft. spongy bone - ANS Layer of bone tissue having many small spaces and found just inside the layer of compact bone on epiphysis. Lattice structure