The Ischial Tuberosity

Question

The ischial tuberosity
A) is a part of the femur.
B) is the part of the coxal bone upon which you sit.
C) articulates with the head of the femur at the acetabulum.
D) articulates with the head of the humerus at the glenoid cavity.

Accepted Answer

The ischial tuberosity is a prominent bony projection on the posterior aspect of the coxal bone. It is commonly referred to as the "sitting bone," as it is the part of the pelvis that makes contact with a chair or surface when sitting. It is not part of the femur or involved in articulation with the humerus.