Which cup-shaped cavity is responsible for the articulation of the head of the femur?

$A$ bone that is formed by ossification within the tendon of a muscle is called:

In humans,the pelvic girdle consists of ...... coxal bones.

If the pelvic bones do not fuse,how many bones are present in an adult human?

The pelvic girdles of females are ...... than those of males.

Choose the correct option $:-$
$(a)$ First seven pairs of ribs are called true ribs.
$(b)$ Sternum is a large triangular bone that is situated at the ventral part of the thorax.
$(c)$ Scapula has a slightly elevated ridge called the spine which projects as a flat,expanded process called the acromion.
$(d)$ Below the acromion is a depression called the glenoid cavity which articulates with the head of the humerus.