fuse to form the coxal bone 2. “sit-down” bone of the coxal bone 3. point where the coxal bones join anteriorly 4. superiormost margin of the coxal bone 5. deep socket in the coxal bone that receives the head of the thigh bone 6. joint between axial skeleton and pelvic girdle 7. longest, strongest bone in body 8. thin lateral leg bone 9. heavy medial leg bone 10. bones forming knee joint 11. point where the patellar ligament attaches 12. kneecap 13. shinbone 14. medial ankle projection 15. lateral ankle projection 16. the two largest tarsal bones 17. ankle bones 18. bones forming the instep of the foot 19. opening in hip bone formed by the pubic and ischial rami 20. sites of muscle attachment on the proximal femur 21. tarsal bone that “sits” on the calcaneus 22. weight-bearing bone of the leg 23. tarsal bone that articulates with the tibia Column B acetabulum calcaneus femur fibula gluteal tuberosity greater and lesser trochanters greater sciatic notch iliac crest illium ischial tuberosity ischium lateral malleolus medial malleolus metatarsals obturator foramen patella pubic symphysis pubis sacroiliac joint talus tarsals tibia tibial tuberosity
The Correct Answer and Explanation is:
Here are the correct answers matching Column A to Column B:
- Fuse to form the coxal bone – ilium, ischium, pubis
- “Sit-down” bone of the coxal bone – ischial tuberosity
- Point where the coxal bones join anteriorly – pubic symphysis
- Superiormost margin of the coxal bone – iliac crest
- Deep socket in the coxal bone that receives the head of the thigh bone – acetabulum
- Joint between axial skeleton and pelvic girdle – sacroiliac joint
- Longest, strongest bone in body – femur
- Thin lateral leg bone – fibula
- Heavy medial leg bone – tibia
- Bones forming knee joint – femur and tibia
- Point where the patellar ligament attaches – tibial tuberosity
- Kneecap – patella
- Shinbone – tibia
- Medial ankle projection – medial malleolus
- Lateral ankle projection – lateral malleolus
- The two largest tarsal bones – calcaneus and talus
- Ankle bones – tarsals
- Bones forming the instep of the foot – metatarsals
- Opening in hip bone formed by the pubic and ischial rami – obturator foramen
- Sites of muscle attachment on the proximal femur – greater and lesser trochanters
- Tarsal bone that “sits” on the calcaneus – talus
- Weight-bearing bone of the leg – tibia
- Tarsal bone that articulates with the tibia – talus
Explanation
The skeletal system is composed of various bones, each with specific functions and structural relationships. The coxal bone, or hip bone, is formed by the fusion of three bones: the ilium, ischium, and pubis. These bones create the framework of the pelvis and serve as key points for articulation and muscle attachment. The ischial tuberosity, also known as the “sit-down” bone, is the part of the ischium that bears weight when sitting.
The pubic symphysis is a cartilaginous joint where the two coxal bones meet anteriorly. Above the hip, the iliac crest forms the upper edge of the ilium and serves as an important muscle attachment site. The acetabulum is a deep, cup-like structure in the coxal bone where the femur head fits, forming the hip joint.
The sacroiliac joint connects the axial skeleton with the pelvic girdle and stabilizes body weight transfer. The femur is the longest and strongest bone, articulating with the tibia to form the knee joint, supported by the patella (kneecap). The tibial tuberosity serves as the attachment site for the patellar ligament.
In the lower leg, the tibia is the medial, weight-bearing bone, while the fibula is the thinner lateral bone. The ankle projections include the medial malleolus from the tibia and the lateral malleolus from the fibula. The talus rests atop the calcaneus and articulates with the tibia, forming part of the ankle joint. The tarsals are the ankle bones, and the metatarsals form the foot’s instep. The obturator foramen, bordered by the pubic and ischial rami, is a large opening that allows for nerve and blood vessel passage.
