aorta

(Order Cladocera):

Heart [Stachowitsch, 1992].

(Order Cladocera):

Unpaired blood vessel extending ventroposteriorly from heart. Separated from heart by anteroventral aortic valve and splits distally into several branches [Stachowitsch, 1992].

(Order Cumacea):

In circulatory system, major blood vessel exending from end of heart. One may distinguish 1) an unpaired anterior aorta extending into head and bearing a cor frontale and 2) paired posterior aortas extending to end of abdomen [Stachowitsch, 1992].

(Order Tanaidacea):

In circulatory system, major blood vessel extending from end of heart. One may distinguish an anterior aorta extending into head and paired posterior aortas. Anterior aorta bears cor frontale. See: lateral artery [Stachowitsch, 1992].

(Order Decapoda):

Anterior aorta, dorsal aorta [Stachowitsch, 1992].

(Order Amphipoda):

In circulatory system, major blood vessel extending from end of heart. One may distinguish an anterior aorta extending into head and a paired or unpaired posterior aorta extending to end of abdomen [Stachowitsch, 1992].

(Order Isopoda):

In circulatory system, major unpaired blood vessel extending from anterior end of heart. Extends into head and bears small accessory heart (corfrontale) [Stachowitsch, 1992].

(Order Mysida):

In circulatory system, major blood vessel extending from heart. According to position one may distinguish an anterior aorta (bearing cor frontale), a posterior aorta, and a descending aorta [Stachowitsch, 1992].

(Order Stomatopoda):

Major blood vessel leading from heart. According to position one may distinguish an anterior aorta (giving rise to antennal, antennular, opthalmic, and other cephalic arteries) and a posterior aorta [Stachowitsch, 1992].

(Order Leptostraca):

In circulatory system, major unpaired blood vessel extending from end of heart. One may distinguish an anterior aorta extending into head and a posterior aorta extending into abdomen; each is branched distally [Stachowitsch, 1992].

(Subclass Branchiura):

Unpaired dorsal blood vessel extending anteriorly from heart [Stachowitsch, 1992].

(Subclass Copepoda):

Unpaired dorsal blood vessel extending anteriorly from heart. (Syn. anterior aorta) [Stachowitsch, 1992].

(Superorder Syncarida):

In circulatory system of anaspidacean, major blood vessel extending from heart. According to position one may distinguish an anterior aorta extending into head, a posterior aorta extending into abdomen, and a descending aorta at level of eighth thoracic somite. (See also artery) [Stachowitsch, 1992].

(Order Thermosbaenacea):

In circulatory system, blood vessel extending from end of heart. One may distinguish short anterior and posterior aortas [Stachowitsch, 1992].

(Order Euphausiacea):

Anterior aorta, descending aorta, posterior aorta [Stachowitsch, 1992].