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Bones anatomy flashcards

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Twenty flashcards on bone anatomy: structure, growth, healing, the skeleton and key landmarks.

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20 cards
Five main functions of bone?
Support, protection, movement, mineral storage and blood cell production.
Where are blood cells made in adults?
Red marrow of flat bones, vertebrae, pelvis and ends of long bones.
Name for the shaft of a long bone?
Diaphysis.
Basic unit of compact bone?
Osteon (Haversian system).
Cell that builds bone?
Osteoblast.
Cell that breaks down bone?
Osteoclast.
Where does a long bone grow in length?
At the epiphyseal (growth) plate.
Stages of fracture healing in order?
Hematoma, soft callus, hard callus, then remodeling.
Hormone that raises blood calcium by releasing it from bone?
Parathyroid hormone (PTH).
DEXA T-score that defines osteoporosis?
-2.5 or lower.
Vertebrae in each region of the spine?
7 cervical, 12 thoracic and 5 lumbar, plus the fused sacrum and coccyx.
Name of the first cervical vertebra?
Atlas.
How many pairs of ribs?
12 pairs.
Ribs that attach directly to the sternum?
Ribs 1 to 7, the true ribs.
Bones of the shoulder girdle?
Clavicle and scapula.
Most commonly fractured carpal bone?
Scaphoid.
Longest and strongest bone in the body?
Femur.
Landmarks for a ventrogluteal injection?
Greater trochanter, anterior superior iliac spine and iliac crest.
System used to classify growth plate fractures in children?
Salter-Harris classification.
Soft spots in an infant skull?
Fontanelles; the anterior one usually closes by 18 to 24 months.