Psio 201--Exam 2-- University Of Arizona 81 Questions And Correct Detailed Answers With Rationales (Verified Answers) |already Graded A+

Epiphyseal plates {Ans: Remain cartilage until "adulthood" (end of puberty)}Intramembranous Ossification {Ans: "within membrane"; mesenchyme --> bone}Primary Ossification {Ans: Marrow cavity formed; Replaces all cartilage with bone; Located in diaphysis; Occurs before birth}Why is bone considered an organ? {Ans: It contains osseous (connective) tissue, blood vessels, nerves, lymphatic vessels, cartilage, and connective tissue coverings}Acromegaly {Ans: Hyper secretion of growth hormone after puberty (epiphyseal plates of long bones already closed)}Open reduction {Ans: Surgical use of rods, plates, pins, to position bones and bone fragments correctly for healing}Fibrous {Ans: Dense irregular CT between bones}Diathrosis {Ans: A joint which is freely moveable}Bone Tissue {Ans: Osteocytes; solid ground substance containing proteoglycans, collagen elastic fibers, hydroxyapatite}Spongy Bone Functions {Ans: Withstand forces from many directions; Lightens the skeleton; Contains red marrow for hemopoiesis}Bone Remodeling {Ans: Bone resorbed by osteoclasts and then formed by osteoblasts}Open (compound) {Ans: Complete, displaced fracture in which one or more broken pieces of bone break the skin}Ossification {Ans: Replacement of (non-bone) CT by bone}Estrogen & Testosterone {Ans: Both stimulate osteoblast activity; stimulate bone formation}Types of Diathroses {Ans: Gliding joint, Hinge joint, Pivot joint, Condyloid joint, Saddle joint,