Abstract
ABSTRACT The heart of Daphnia pulex lacks epi- and endocardium. The myocardium, covered by a thin basal lamina, is not polarized. In relaxed sarcomeres, Z-, A-, I- and H-bands are present. Invaginations of sarcolemma, forming Tz tubules and clefts, are limited to Z-band levels at both sides of the myocardium. Longitudinal tubules branch off from the Tz tubules. The sarcoplasmic reticulum is regular, with transverse tubules at Z- and A-I-band levels which are interconnected with longitudinally directed tubules. Interior couplings of tubule-totubule type are located at Z- and A-band levels and peripheral couplings mostly at A-band level. Intercalated discs are present.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
