Changes

#''Hridaya'': The heart; According to Suśruta, ''Phupphusa'' (left lung) and ''Pleeha'' (spleen) are situated on the left side of ''Hridaya'', whereas ''Yakrita'' (liver) and ''Klomia'' (right lung) on the right side. A few scholars suggest that the term ''Hridaya'' means ‘central’ or ‘vital’ organ, and therefore, can stand for different organs in different contexts.  

#''Hridaya'': The heart; According to Suśruta, ''Phupphusa'' (left lung) and ''Pleeha'' (spleen) are situated on the left side of ''Hridaya'', whereas ''Yakrita'' (liver) and ''Klomia'' (right lung) on the right side. A few scholars suggest that the term ''Hridaya'' means ‘central’ or ‘vital’ organ, and therefore, can stand for different organs in different contexts.  

#''Ojas'': The essence of all seven ''dhatus'' that is vital for life; also suggestive of ''bala'' (immunity). The ten attributes of ''ojas'' are ''guru'' (heavy), ''sheeta'' (cold), ''mridu'' (soft), ''shlakshna'' (smooth), ''bahala'' (abundant), ''madhura'' (sweet), ''sthira'' (stable), ''prasanna'' (bright), ''picchila'' (sticky), and ''snigdha'' (unctuous). Functionally this is very closely related to ''kapha''.  

#''Ojas'': The essence of all seven ''dhatus'' that is vital for life; also suggestive of ''bala'' (immunity). The ten attributes of ''ojas'' are ''guru'' (heavy), ''sheeta'' (cold), ''mridu'' (soft), ''shlakshna'' (smooth), ''bahala'' (abundant), ''madhura'' (sweet), ''sthira'' (stable), ''prasanna'' (bright), ''picchila'' (sticky), and ''snigdha'' (unctuous). Functionally this is very closely related to ''kapha''.  

#Rasa: The first Dhatu among seven Dhatavah (or dhatus). This is a liquid that is pumped out of Hridaya (Heart), and that circulates continuously all over the body to nourish the other Dhatavah. Vyana Vayu and Samana Vayu help in its circulation. The major function of Rasa Dhatu is Prinana (nourishing).  

#''Rasa'': The first ''dhatu'' among the seven ''dhatavah'' (or ''dhatus''). This is a liquid that is pumped out of ''hridaya'' (heart), and that circulates continuously all over the body to nourish the other ''dhatavah''. ''Vyana Vayu'' and ''Samana Vayu'' help in its circulation. The major function of ''rasa dhatu'' is ''prinana'' (nourishing).  

Sira / Sirah

#''Sira / Sirah'': A kind of blood vessel that transports the contents from one place to another; According to Vagbhata, they originate in the heart. They carry various substances including ''Rasa, Rakta,'' and ''Ojas''.  

A kind of blood vessel that transports the contents from one place to another; According to Vagbhata, they originate in the heart. They carry various substances including Rasa, Rakta, and Ojas.  

#''Srotas / Srotamsi'': Structures meant for the transportation of ''dhatus'' that are undergoing the process of transformation. The appearance of a ''srota'' is similar to the ''dhatu'' that it transports. These are of two types: ''Sthula'' (gross), and ''Anu'' or ''Sukshma'' (minute). This term is also suggestive of a kind of vessel that facilitates the fluid exchange. Sushruta states that there are eleven pairs of ''srotamsi'' (channels) that transport eleven different biological entities: ''Prana, Anna, Udaka, Rasa, Rakta, Mamsa, Meda,'' ''Mutra, Purisha, Shukra,'' and ''Artava''.  Charaka explains that there are thirteen gross ''Srotamsi'' in the body that carry the following entities: ''Prana, Anna, Udaka, Rasa, Rakta, Mamsa, Meda, Asthi, Majja, Shukra, Mutra, Purisha,'' and ''Sveda''.

Srotas / Srotamsi

Structures meant for the transportation of dhatus that are undergoing the process of transformation. The appearance of a Srotas is similar to the dhatu that it transports. These are of two types: Sthula (gross), and Anu or Sukshma (minute). This term is also suggestive of a kind of vessel that facilitates the fluid exchange. Sushruta states that there are eleven pairs of Srotamsi (channels) that transport eleven different biological entities: Prana, Anna, Udaka, Rasa, Rakta, Mamsa, Meda, Mutra, Purisha, Shukra, and Artava.  Caraka explains that there are thirteen gross Srotamsi in the body that carry the following entities: Prana, Anna, Udaka, Rasa, Rakta, Mamsa, Meda, Asthi, Majja, Shukra, Mutra, Purisha, and Sveda.