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Skeletal System

QuestionAnswer
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