According to World Health Organisation, approximately 500,000 preschool age children go blind each year due to vitamin A deficiency. Vitamin A is need for proper functioning of the immune system and for the proper functioning of the eyes. Sources of vitamin A include: egg, liver, vegetable with high carotene contents, fortified milk, fruits, etc.
Gliding Joints are found between bones that meet at flat or mostly flat surfaces. They allow for gliding movement of the bones past each other.
Condyloid joints allow for two planes of movement in flexion, extension, adduction, abduction, and/circumduction. These generally follow a convex/concave relationship between the bones that are joined via this joint.
You can find both types in the wrist.
Pelvic inflammtory disease.
Hope this helps
