MSU BIO215 Lecture - Week 06 Objective Assignment

MSU BIO215 Lecture - BIOL215 Lecture Week 06 Objective Assignment Chapter 6 Bone and Bone Tissue Bone Structure 1 Describe the gross anatomy of a

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BIOL215 Lecture Week 06 Objective Assignment Chapter 6: Bone and Bone Tissue Bone Structure 1) Describe the gross anatomy of a typical long bone and flat bone. Indicate the locations and functions of red and yellow marrow, periosteum, and endosteum. i) Long Bone - Long bones are longer than they are wide, have two epiphyses and a diaphysis. All of the bones of the limbs, except the patella, ankle, and wrist, are considered long bones. A long bone has a shaft, the diaphysis, and two ends, the epiphyses. The periosteum is the outer surface of bone and covers a long bone in all areas, except for the articular surfaces, which are covered by articular, or hyaline, cartilage. Deep in the periosteum is a layer of compact bone, a thicker layer in the diaphysis than the epiphysis. The endosteum is a thin layer of connective tissue, which lines the surface of the bony tissue that forms the medullary cavity of long bones. In an adult, it contains yellow bone marrow. In the epiphyses deep to the layer of compact bone is spongy bone. Between the trabecula of the spongy bone is red bone marrow. ii) Flat Bone - Flat bones are thin, flattened, and a bit curved. The sternum, scapulae, ribs, and most of the bones of the skull are flat bones. Ossification, or osteogenesis, is the process of bone formation. Two mechanisms form bone: intramembranous and endochondral. Intramembranous ossification results in the formation of the cranial bones
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This note was uploaded on 05/07/2010 for the course BIOLOGY BIO 215 taught by Professor Tucker during the Spring '10 term at Mountain State.

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MSU BIO215 Lecture - BIOL215 Lecture Week 06 Objective Assignment Chapter 6 Bone and Bone Tissue Bone Structure 1 Describe the gross anatomy of a

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