The pectoral and pelvic girdles and the bones of limbs form:

Bones of the limbs along with their girdles constitute the

What type of bone is the patella (kneecap) considered to be?

Choose the correct option $:-$
$(a)$ The first seven pairs of ribs are called true ribs.
$(b)$ The sternum is a large triangular bone situated at the ventral part of the thorax.
$(c)$ The 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.

Astragalus and calcaneum are present in

The longest bone of the human body is