Larvae and Postlarvae. Planktonic larval life begins as the female lobster raises her abdomen and vigorously fans the pleopods to which the prelarvae are attached. This fanning breaks the cement attachment to the prelarvae and propels them upwards toward the water surface.
bicipital tuberosity. [bÄ«â²sipÂ·ÉdÂ·Él âtÃ¼bÂ·Éâ²rÃ¤sÂ·ÉdÂ·Ä] (anatomy) An eminence on the anterior inner aspect of the neck of the radius; the tendon of the biceps muscle is inserted here.
tendon is encased within a synovial sheath, which ends as a blind pouch at the end of the bicipital groove. As a result, the biceps tendon is intraarticular but extrasynovial. The average length of the tendon is 102mm. It is interesting to note that the shape and cross-sectional area of the tendon changes as it runs from proximal to distal. At its proximal attachment near the glenoid, it has an average cross-section of 8.4 3.4mm. This decreases to 4.5 2.1mm as the tendon leaves the bicipital groove. Therefore, rupture of the biceps tendon most commonly occurs proximally near the glenoid labrum and distally in the bicipital groove. Function The biceps muscle-tendon unit is one of many structures in the human body to cross two joints. In the elbow, it serves primarily as a forearm supinator.