The Nervous System A complete understanding of the human nervous system remain s a challenge. Several billion cells remain associated ...

Tonsils          These are the largest lymph nodules. They provide protection against bacteria and other harmful materials. In adults...

Spleen            The lymph enters the lymph nodes through afferent lymphatic vessels and exits through efferent vessels. The nodes co...

Lymph nodes These are small round structures. Their size ranges from 1-25 mm. They are distributed throughout the course of the lymphat...

Thymus Gland                                                    It is a roughly triangular, bilobed gland. It is located in the medias...

Lymphatic System     Lymphatic circulation along with blood circulation plays a key role in maintaining the fluidity in all regions of...

Structure of blood vessels Blood Vessels   The blood vessels show a vast range of structural modifications. However a few basic patte...

       In the systemic circulation the venous blood passing through spleen, pancreas, stomach and interstine is not carried back direct...