Question

which of the following is a weight - bearing bone?
sacrum
tibia
coccyx
fibula
pelvis
question 2 1.5 pts
which of the following does not articulate with the tibia?
femur
sacrum
fibula
talus

Explanation:

• For the first question:
• The tibia is a major weight - bearing bone in the lower leg. The sacrum is part of the axial skeleton and is involved in transferring weight from the axial to the appendicular skeleton but is not a long - bone weight - bearing in the same sense as the tibia. The coccyx is a vestigial structure. The fibula is a non - weight - bearing bone (or has a very minor weight - bearing role compared to the tibia). The pelvis is a complex of bones that transmits weight but is not a single weight - bearing bone like the tibia.
• For the second question:
• The femur articulates with the tibia at the knee joint. The fibula articulates with the tibia (proximally and distally). The talus articulates with the tibia at the ankle joint. The sacrum is part of the vertebral column and does not have a direct articulation with the tibia.

Answer:

1. Tibia
2. Sacrum