dorsal vessels造句

• The dorsal vessel moves the blood forward, while the other four longitudinal vessels carry the blood rearward.
• These vessels run on either side of the alimentary canal and pump blood from the dorsal vessel to the ventral vessel.
• Blood flows forward in the dorsal vessel, above the gut, and returns down the body in the ventral vessel, beneath the gut.
• From the proboscis, blood flows into a single blood vessel running underneath the digestive tract, from which smaller sinuses supply blood to the trunk, and back into the dorsal vessel.
• Blood is carried forward in the dorsal vessel ( in the upper part of the body ) and back through the ventral vessel ( underneath ), before passing into a sinus surrounding the intestine.
• The dorsal vessel in some of the larger serpulids, like " Serpula ", possesses a valve and a muscular sphincter, probably to prevent backflow of blood from the transverse vessel.
• Larva dull dark green, black spotted, living when young in the heart of the central shoots; later, with dark dorsal vessel, limited by several whitish lines and a white lateral line.
• Pumping of the hemolymph occurs by waves of peristaltic contraction, originating at the body's posterior end, pumping forwards into the dorsal vessel, out via the aorta and then into the head where it flows out into the haemocoel.
• Pumping of the haemolymph occurs by waves of peristaltic contraction, originating at the body's posterior end, pumping forwards into the dorsal vessel, out via the aorta and then into the head where it flows out into the haemocoel.
• "P . subnuda " belongs to the Meliponini tribe, which is defined by distinctive phenotypic differences of dorsal vessels . " P . subnuda " also belongs to the genus " Paratrigona " found specifically in MesoAmerica.