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PIMA BIO130

CHP8 Skeletal; Lower Extremity Bones and Their Markings; Femur and below

QuestionAnswer
Femur Thigh bone; largest, strongest bone of the body
Head (re: femur) Rounded upper end of the bone; fits into the acetabulum
Neck (re: femur) Constricted portion just below the head
Greater trochanter (re: femur) Protuberance located inferiorly and laterally to the head
Lesser trochanter (re: femur) Small protuberance located inferiorly and medially to the greater trochanter
Intertrochanteric line (re: femur) Line extending lengthwise along the concave posterior surface
Linea aspera (re: femur) Prominent ridge extending lengthwise along the concave posterior surface
Supracondylar ridges (re: femur) Two ridges formed by division of the linea aspera at its lower end; the medial supracondylar ridge extends inward to the inner condyle, the lateral ridge to the outer condyle
Condyles (re: femur) Large, rounded bulges at the distal end of teh femur; one medial and one lateral
Epicondyles (re: femur) Blunt projections from the sides of the condyles; one on the medial aspect and one on the lateral aspect
Adductor tubercle (re: femur) Small projection just above the medial condyle; marks the termination of the medial supracondylar ridge
Trochlea (re: femur) Smooth depression between the condyles on the anterior surface; articulates with the patella
Intercondylar fossa (notch) (re: femur) Deep depression between the condyles on the posterior surface; the cruciate ligaments, which help bind the femur to the tibia, lodge in this notch
Patella Kneecap; largest sesamoid bone of the body; embedded in the tendon of the quadriceps femoris muscle
Tibia Shin bone
Condyles (re: tibia) Bulging prominences at the proximal end of the tibia; upper surfaces concave for articulation with the femur
Intercondylar eminence (re: tibia) Upward projection on the articular surface between the condyles
Crest (re: tibia) Sharp ridge on the anterior surface
Tibial tuberosity (re: tibia) Projection in the midline on the anterior surface
Medial malleolus (re: tibia) Rounded downward projection at the distal end of the tibia; forms the prominence on the medial surface of the ankle
Fibula Long, slender bone of the lateral side of the lower part of the leg
Lateral malleolus (re: fibula) Rounded prominece at the distal end of the fibula; forms the prominence on the lateral surface of the ankle
Tarsal Bones Bones that form the heel and proximal or posterior half of the foot; include calcaneus, talus, navicular, cuboid, medial cuneiform (I), intermediate cuneiform (II), and lateral cuneiform (III)
Calcaneus Heel bone
Talus Uppermost of the tarsal bones; articulates with the tibia and fibula; boxed in the medial and lateral malleoli
Arches of foot Curves of the bones of the foot and ankle that, along with muscles and other soft tissue, properly support the mass of teh skeleton
Longitudinal arches Tarsal and metatarsal bones so arranged as to form an arch from the front to the back of the foot
Medial arch of foot Formed by the calcaneus, talus, navicular, cuneiforms, and three medial metatarsal bones
Lateral arch of foot Formed by the calcaneus, cuboid, and two metatarsal bones
Transverse (or metatarsal) arch Metatarsal and distal row of tarsal bones (cuneiforms and cuboid) articulated so as to form an arch across the foot; bones kept in two arched postitions by means of powerful ligaments in the sole of the foot and by muscles and tendons
Metatarsal bones Long bones of the feet; numbered (from medial side) I, II, III, IV, V
Phalanges (of the feet) Mini long bones of the toes; two in each great toe; three in the other toes; from metatarsal bone: proximal, middle (except first toe), distal; numbered (from medial side) I (except first toe), II, III, IV, V
Created by: Jgiron6994