BIO102 Unit 3 Assignment.docx - 1 2 3 4 5 6 7 8 9 Classify...

This preview shows page 1 - 3 out of 4 pages.

1. Classify bones according to their shapes. 1. Long, short, flat, irregular. 2. Provide examples of each bone shape and a location where found in the body. 1. Long – humerus, ulna, radius in arms 2. Short – carpals in wrists 3. Flat – cranial bones, scapulae, sternum and ribs 4. Irregular – facial bones containing sinuses 5. Sesamoid – Petellae, found in tendons associated with feet, hands and knees. 3. Identify the major types of bone markings, and provide a function for each type. 1. Articulations – conform to one another to facilitate the function of the articulation 2. Projections – attachment points for tendons and ligaments 3. Holes – allows blood vessels and nerves to enter the bone 4. Explain the functional significance of surface features. 1. The surfaces of bones bear projections, depressions, ridges and various other features. 5. Identify the anatomical parts of a typical long bone, and describe its internal structures, providing functions for each structure. 1. Diaphysis – shaft of the bone, not bend or break 2. Epiphysis – contain red marrow 3. Articular cartilage – shock absorption, less friction 4. Periosteum – allows for attachment for tendons and ligaments 5. Medullary cavity – houses red/yellow marrow 6. What is hematopoiesis? Where does it occur within the skeletal system. 1. The production of blood cells. Takes place in red marrow. 7. Compare and contrast red marrow with yellow marrow, provide examples of where each would be found within the skeletal system. 1. The head of the femur contains both yellow and red marrow. 2. Yellow marrow stores fat 3. Red marrow is responsible for hematopoiesis 8. Identify the cell types in blood, and list their major functions 1. Osteogenic – develop into osteoblasts 2. Osteoblasts – bone formation 3. Osteocytes – maintain mineral concentration of matrix 4. Osteoclasts – bone resorption 9. Compare and contrast compact bone with spongy bone. 1. Most bones contain compact and spongy osseous tissue, but their distribution and concentration vary based on the bones overall function 2. Compact bone is denser and stronger
3. Spongy bone contains osteocytes housed in lacunae. They are found in a lattice-like network of matrix spikes called trabeculae.

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture