|
|
|
Lymphatic vessels (green) pick up excess tissue fluid, purify it in lymph nodes, and return it to th
Remove the heat source, and check the skin for redness. Massage the area, and notice muscle ...
Electrical Conduction System of the Heart
Nervous System Regulation of the Heart
The renin–angiotensin–aldosterone system
Overview of the components of the human digestive system, together with a brief description of their