Psychology = Cancer, the virtue & principle of care and charity; it deals with the initiation of emotions and feelings when you focus on correlating your mood within private space or domestic issues. For this reason, cancers need meaning and reasoning behind how they feel, or they will become highly uncomfortable if you make them feel a certain way. Apart from, that if there is no reasoning or meaning behind it, they will become moody and retract from the world (Jupiter exhalation). Therefore, as a spirit, you know you are using the heart chakra (Earth& Moon) when focusing on your domestic, family, and home life. Furthermore, the lymphatic & immune (Cancer) system plays almost the role of a mother who is taking care of everybody (Organs) because the lymphatic works as sewerage to clean up waste via lymph nodes, and the immune system protects you from a pathogen (Cardinal Water).
Physiology = The lymphatic or lymph system involves an extensive network of vessels that passes through almost all our tissues to allow for the movement of a fluid called lymph. Lymph circulates through the body in a similar way to blood. The immune system protects your body from outside invaders, such as bacteria, viruses, fungi, and toxins (chemicals produced by microbes). It is made up of different organs, cells, and proteins that work together.