- anal fin development
The process whose specific outcome is the progression of the anal fin over time, from its formation to the mature structure.
- anal fin morphogenesis
The process in which the anatomical structures of the anal fin are generated and organized. An anal fin is an unpaired medial fin on the ventral aspect near the caudal end of a fish, which provides lateral stability while swimming.
- post-anal tail morphogenesis
The process in which a post-anal tail is generated and organized. A post-anal tail is a muscular region of the body that extends posterior to the anus. The post-anal tail may aid locomotion and balance.
- embryonic anal fin morphogenesis
The process, occurring in the embryo, by which the anatomical structures of the embryonic anal fin are generated and organized. An anal fin is an unpaired medial fin on the ventral aspect near the caudal end of a fish, which provides lateral stability while swimming.
- post-embryonic anal fin morphogenesis
The process, occurring after embryonic development, by which the anatomical structures of the anal fin are generated and organized. An anal fin is an unpaired medial fin on the ventral aspect near the caudal end of a fish, which provides lateral stability while swimming.
- genital disc anterior/posterior pattern formation
The establishment, maintenance and elaboration of the anterior/posterior axis of the genital disc. An anterior and posterior compartment form in each of the three genital disc primoridia (the female genital disc primordium, the male genital disc primordium and the anal primordium).
- genital disc development
Progression of the genital imaginal disc over time, from its initial formation through to its metamorphosis to form the adult terminalia, comprising the entire set of internal and external genitalia and analia. Both sexes of Drosophila have a single genital disc formed from the female and male genital primordia, and the anal primordium. The anal primordium develops in both sexes, forming either male or female analia. However, only one of the genital primordia develops in each sex, forming either the male or the female genitalia.
- genital disc morphogenesis
The process in which the anatomical structures derived from the genital disc are generated and organized. This includes the transformation of a genital imaginal disc from a monolayered epithelium in the larvae of holometabolous insects into the recognizable adult genital structures, the anal plates and the hind gut.
- determination of genital disc primordium
Allocation of embryonic cells to the genital imaginal disc founder populations. Early in development at the blastoderm stage, the anlage of the genital disc of both sexes consists of three primordia: the female genital primoridum lcoated anteriorly, the anal primoridum located posteriorly, and the male gential primordium between the two.
- intestine smooth muscle contraction
A process in which force is generated within smooth muscle tissue, resulting in a change in muscle geometry. This process occurs in the intestine. Force generation involves a chemo-mechanical energy conversion step that is carried out by the actin/myosin complex activity, which generates force through ATP hydrolysis. The intestine is the section of the alimentary canal from the stomach to the anal canal. It includes the large intestine and small intestine.