The ________ protect major organs like the heart and the lungs.

The part of the bone that produces fresh blood cells is called the __________.

Bones meet at areas called __________.

The joint connecting the upper and the lower arms is called a __________ joint.

The joint that connects the head and the neck is called a ________ joint.

Our skeletal system needs __________, an important mineral that strengthens our bones.

Bones of the head.

The middle part of our body is supported by the __________.

Our spine is made of ring-shaped bones called __________ or backbones.

The collarbones are also called as __________.

The clavicle and __________ are flat bones that make up the shoulders.

The longest and heaviest bone, called the __________, is found in the thigh.

The outer part of the bone that is hard and solid.

The inner part of the bone that is spongy is called __________.

The __________ bone marrow makes fresh blood.

The __________ bone marrow is mostly made of fats.

Joints are connected together by yellow elastic tissues called __________.

__________ joints are areas where bones are stuck together and are immovable.

__________ joints are lubricated to allow the body to move comfortably.

A smooth layer of __________ also protects the end parts of the bones by covering them.