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Explore the skeletal system of the lower extremity, including the hipbone, femur, tibia, patella, tarsals, and phalanges. Learn about the pelvic girdle and its strong support for the body's column.
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__ Total Bones Hipbone (1) = Femur (1) = 2 Tibia (1) = _______ (1) = 2 Patella (1) = 2 Tarsals (7) = __________ (5) = 10 Phalanges (14) = Appendicular - Lower Extremity
Pelvic Girdle • ______________ • Formed by fusion of _____ bones • Ilium (superior) • Ischium (__________and posterior) • ____________ (inferior and anterior) • Strong and stable support for ____________ column
Ilium (superior) • “Flank” • Most ___________ and largest hipbone
Ischium (inferior & posterior) • “Hip” • Inferior, posterior portion of the hipbone
Pubis (inferior & anterior) • “______________ mature” • Anterior and inferior part of the hipbone
Pelvis • Together with the sacrum and coccyx, the two hipbones form the basin-like “Pelvis” • Pelvic Brim / Inlet: • seperates the superior and inferior portions of the pelvis • is the superior boundary of pelvis oblique plane
Pelvic Brim / Inlet Plane from sacrum to sup. pubic symphysis
Female Pelvis • Wide pelvic outlet • Shallow • Male Pelvis • Narrow pelvic outlet • Deep
Female Pelvis • ______ pelvic outlet • Shallow • Pubic arch > 90-deg • Male Pelvis • __________ pelvic outlet • Deep • Pubic arch < 90-deg
Femur • “Thighbone” • _________, heaviest, and ______ bone in body • Head of femur • Proximally _________ with hipbone at the _______________ • _________ articulates with tibia and patella
Femur – Proximal End Anterior
“__________Shinbone” Larger, medial bone of lower leg Bears _________ of body’s weighty Proximal articulation with _______ and __________ _________ articulation with fibula and talus Tibia
Tibia - Distal End • Medial Malleolus “medial ankle bone” Medial Malleolus Fibular Notch Anterior
_______ “shinbone” Thinner and smaller than tibia Does not bear much bodyweight (non-weight bearing) Fibula
Patella • “Kneecap” • Largest ________bone • Subcutaneous and easily _____________ • Increases __________ for quadriceps muscles • Lies anterior to distal femur
_____________ Heel bone Talus Most superior and articulates with tibia Navicular _____________ _____________ Lateral ______________ Medial (1st) Intermediate (2nd) Lateral (3rd) Tarsal Bones
Lateral Cuneiform Intermediate Cuneiform Medial Cuneiform Navicular Cuboid Talus Calcaneus Superior
Metatarsals • 5 per foot • Numbered 1-5 from big toe to little toe • ex: Big Toe “___________” =1 • ex: Pinky Toe= 5 1 2 3 4 5
Phalanges • 14 bones of the toes • ____ per toe • ____ per big toe • Regions: • ______________ • ______________ • ______________