HKR 2311 Lecture 2: HKR2311 - Unit 2

• School: Memorial University
• Department: Human Kinetics and Recreation
• Course: HKR 2311
• Professor: Jon Reid& Dan Hodgson

Document Summary

Five functions of bone: support, storage of minerals, manufacture of blood cells, protection, leverage. Bone shapes: bones can be divided into six different categories according to their shape: The portion of the epiphysis, which forms a joint, is coated with a hyaline cartilage called the articular cartilage. Characteristics of bone: there are four characteristics: Bone matrix is dense and contains calcium salts. Osteocytes (bone cells) are contained in the lacunae of the bone matrix. Canaliculi form branching networks through the bone matrix, connecting lacunae to nearby blood vessels the outer surface of bone, except at joints, are covered by a periosteum. Bone hypertrophy: critical roles and locations of osteoblasts (involved in building bone) and osteoclasts (involved in bone resorption), are a primary focus. Bone disorders: there are two bone disorders, which affect the human skeleton at relatively different ti(cid:373)es i(cid:374) a perso(cid:374)(cid:859)s life spa(cid:374).