The seven dhatus are as follows:
Rasa
Provides nourishment to all other six buddies of its. It's a transporter of the
body – Plasma fluids.
Rakta
Works like Rasa in movement, provides energy to all other five and also provides
color/complexion to body Blood!!
Mamsa
It covers the body and gives movements to the body Muscular system of the body.
Meda
Collects the energies and stores it for the strengths of the body Adipose tissue,
along with other components, which are liable to store energy in them.
Asthi
Bears the body, make it to stand upright as does the skeletal system for us.
Majja
Responsible for love and nourishment as its structure is also smooth and soft. As
it fills the gap in bones, it can be said- marrow!
Shukra
After nourishment of the body, rest will go for the coming generation. Important
for reproductive capacities of a person, or can be said a power nourishing the reproductive
strengths of a person. These seven together hold up the body and provide strength
for life.
Since the dhatus support and derive energy from each other, affecting one can influence
others. For instance, interference in the manufacture of the plasma affects the
quality of the blood, which in turn affects the muscle. Each tissue type has its
own agni, which determines metabolic changes in the tissues. And forms by-products,
which are either used in the body or excreted. Menstrual periods for example are
a by-product of rasa. The tissues are also governed by the three doshas, and any
imbalance in them also causes imbalances in dhatus. Heavy periods therefore can
also be caused by the effects of the excess of Kapha on plasma.
Each of the Dhatus is built out of a previous one and they develop on the nourishment
that comes from the digestive system. They are basically the result of the action
of catalysts that convert one tissue to another. The sole purpose of metabolism
is to assemble proper ‘Dhatus’ together in synchronization with which they carry
out their role as the field of physiological activity.
Each dhatu consists of countless infinitesimal paramanus (cells) which are units
of structure and function. Each paramanu contains innumerable suksma srotas (channels,
pores) through which it receives nutrients and subtle energies and eliminates waste
materials. Because dhatus are saturated with pores, the human body can also be said
to be filled with pores (srotomaya). The srotas of each dhatu are unique in their
structure and function and in the materials which move through them. The state of
health of each dhatu as well as its relative vriddhi/kshaya (excess/deficiency;
increase/decrease) is assessed by the physician.