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Skeletal System
| Question | Answer |
|---|---|
| Muscles that form the iliopsoas | Psoas Major and Illiacus |
| Mature bone cell, maintains bone matrix, live in lucunae, do not divide | Osteocyte |
| Shaft of long bone | Diaphysis |
| Wide part at the end of long bones | Epiphysis |
| Perpendicular to the central canal, carry vessels into bone marrow | Compact/Dense Bone |
| Basic unit of compact bone | Osteon |
| Matrix forms open network of trabeculae, filled with bone marrow; does not contain osteons | Spongy/Cellaneous Bone |
| Makes up 80% of the human skeleton, primary component of long bones | Compact/Dense Bone |
| Bone type that is the primary component of ribs and shoulders | Spongy/Cellaneous Bone |
| Found in shaft of long bones | Bone Marrow |
| Produce osteoid (matrix) by secreting matrix compound | Osteoblasts |
| Secrete acids and protein-digesting enzymes; dissolve matrix | Osteoclasts |
| Bone Matrix | Osteoid |
| Embryonic development of flat bones from an embryonic tissue called the mesenchyme; produces flat bones of skull, mandible, and clavicle | Intramembranous Ossification |
| Ossifies bones that originate as hyaline cartilage | Endochondral Ossification |
| Hormone made in kidneys; synthesis requires Vitamin D3, helps absorb calcium and phosphorus from digestive tract | Calcitrol |
| Increases calcium ion levels | Parathyroid Hormone |
| Bone mass loss that occurs with age | Osteopenia |
| Upper jaw bone | Maxilla |
| Lower jaw, only movable facial jaw | Mandible |
| Cheek bones | Zygomatic |
| Bone located at the inner corner of eye, contains tear ducts | Lacrimal |
| Bone located under neck, supports larynx | Hyoid |
| Elbow | Olecranon Process |
| 3 Bones that make up Pelvis | Ischium, Ilium, Pubis |
| Vertibrae: Total, Cervical, Thoracic, and Lumbar | 24 total, 7 cervical, 12 thoracic, and 5 lumbar |
| 5 fused vertibrae | Sacrum |
| 4 fused vertibrae | Coccyx |
| Made up of thoracic vertibrae, ribs, and sternum | Thoracic Cage |
| 7 ribs of this type | TRUE ribs |
| 3 ribs of this type | FALSE ribs (not attached to sternum directly) |
| 2 ribs of this type | FLOATING ribs (not attached to sternum at all) |
| 3 bones that form the sternum | Manubrium, Sternal Body, and Xiphoid Process |
| Bones that make up pectoral girdle | Clavicles and Scapula |
| How many bones make up the carpals in the wrists (both combined)? | 16 |
| How many metacarpals make up the hands (both combined)? | 10 |
| Hip Socket | Acetabulum |
| Freely movable joint | Diathrosis |
| Depressions | Foramen, Fossa, Meatus, Sinus |
| Responsible for forced exhalation | Internal Intercostal |
| Responsible for inhalation | External Intercostal |
| Responsible for stabilizing/extending the knee | Vastus Lateralis |
| Responsible for flexing of fingers | Flexor Digitorum Superficialis |
| Responsible for flexion of elbow | Brachioradialis |
| Responsible for flexion of wrist | Flexor Carpi Ulnaris |
Created by:
kcopeland10
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