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kill me ch 7 appendi

QuestionAnswer
Hematopoiesis Blood cell formation
Bone matrix About 70% consists of inorganic mineral salts
Hydroxyapatite Most abundant salt in bone matrix
Calcium Vital in nerve impulse conduction and muscle contraction
Blood calcium regulation Regulated by parathyroid hormone and calcitonin
Intramembranous Ossification Flat skull bones, clavicles, sternum, and some facial bones; bones form between sheets of primitive connective tissue
Endochondral Ossification Long bones and most of the skeleton; bones form from hyaline cartilage models
Osteoclasts Break down calcified matrix; "cuts bone"
Osteoblasts Invade and replace cartilage with bone tissue; "build bone"
Calcitonin Tones down blood calcium
High blood calcium Triggers calcitonin, which stimulates osteoblasts
Too little calcium Parathyroid glands stimulate osteoclasts
Vitamin D Calcium absorption; deficiency causes rickets and osteomalacia
Vitamin D deficiency Causes rickets and osteomalacia
Vitamin C Collagen synthesis; deficiency results in slender, fragile bones
Vitamin C memory trick C for collagen
Vitamin C deficiency Results in slender, fragile bones
Physical Stress Stimulates bone growth
Axial Skeleton 80 bones
Skull Cranium and facial bones; axial skeleton
Middle ear bones Move sound to receptors in inner ear; axial skeleton
Hyoid bone Supports tongue and is muscle attachment site; axial skeleton
Vertebral column Forms central axis of skeleton; axial skeleton
Thoracic cage Ribs and sternum; protects organs; axial skeleton
Appendicular Skeleton 126 bones
Pectoral girdle Scapula and clavicle; upper limb movement; appendicular skeleton
Upper limbs Humerus, radius, ulna, hand; appendicular skeleton
Pelvic girdle Hip bones; lower limb movement; forms pelvis; appendicular skeleton
Lower limbs Femur, tibia, fibula, patella, foot; appendicular skeleton
Created by: jullian18
 

 



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