15 Anatomy Terms
| Definition | Name | Synonym | Primary Identifier |
|---|---|---|---|
| A group of six equivalent cells forms a tightly constructed `valve` that links the posterior bulb of the pharynx to the anterior four cells of the intestine. These six cells comprise a small epithelial channel with a cuticular lining in continuity with the pharyngeal cuticle and link the lumen of the pharynx to the large lumen of the anterior intestine. | pharyngeal-intestinal valve | cardia | WBbt:0005767 |
| A chain of very large cuboidal cells forming a wide central lumen in which food arrives from the posterior pharynx, is digested, and from which waste products proceed to the rectum. Intestinal rings form in groups of two and four cells surrounding the common lumen; thus the epithelium is only one cell deep at any point, with neighboring cells firmly secured to their neighbors by apical adherens junctions. These cells have very large nuclei and many large vacuoles, yolk granules, and other inclusions; the latter increase in number and electron density as the animal ages. | intestine | gut | WBbt:0005772 |
| the feeding organ, a neuro-muscular pump in the head of the animal, used to ingest food, bacteria suspended in liquid, filter them out, grind them up and transport posteriorly into the instestine. | pharynx | esophagus | WBbt:0003681 |
| neuron with its cell body situated in the head, excluding the pharynx. | head neuron | WBbt:0006751 | |
| a saddle-shaped muscle cell that encircles the intestinal-rectal valve | anal sphincter muscle | lineage name: ABprpppppap | WBbt:0005798 |
| neuron of the pharyngeal nervous system. | pharyngeal neuron | WBbt:0005439 | |
| Tail ventral hypodermis, 9th hypodermis cell | hyp9 | WBbt:0004380 | |
| Tail ventral hypodermis | hyp10 | lineage name: ABplppppppp | WBbt:0004378 |
| Tail ventral hypodermis, 8th hypodermis cell | hyp8 | WBbt:0004381 | |
| Tail dorsal hypodermis | hyp11 | lineage name: Cpappv | WBbt:0004377 |
| rectal gland cell | WBbt:0005799 | ||
| Intestino-rectal valve | virL | lineage name: ABprpappppp | WBbt:0004511 |
| Intestino-rectal valve | virR | lineage name: ABprpappppa | WBbt:0004510 |
| Preanal hypodermis | hyp12 | lineage name: P12.pa | WBbt:0004376 |
| male sensory organ; nine bilateral pairs of finger-like rays (numbered 1 to 9, Left/Right) radiate from the tail and are embedded in a cuticlar fan. | ray | male sensory ray | WBbt:0006941 |
1 Genes
| WormBase Gene ID | Gene Name | Sequence Name | Organism |
|---|---|---|---|
| WBGene00011099 | nhr-208 | R07B7.15 | Caenorhabditis elegans |
9 Life Stages
| Remark | Definition | Other Name | Public Name | Primary Identifier |
|---|---|---|---|---|
| The stage that begins when a C.elegans individual is fully-developed and has reached maturity. | adult Ce | WBls:0000041 | ||
| The third stage larva. At 25 Centigrade, it ranges 32.5-40 hours after fertilization, 18.5-26 hours after hatch. | L3 larva Ce | WBls:0000035 | ||
| The second stage larva. At 25 Centigrade, it ranges 25.5-32.5 hours after fertilization, 11.5-18.5 hours after hatch. | L2 larva Ce | WBls:0000027 | ||
| The fourth stage larva. At 25 Centigrade, it ranges 40-49.5 hours after fertilization, 26-35.5 hours after hatch. | L4 larva Ce | WBls:0000038 | ||
| The first stage larva. At 25 Centigrade, it ranges 14-25.5 hours after fertilization, 0-11.5 hours after hatch. | L1 larva Ce | WBls:0000024 | ||
| The C. elegans life stage spanning 620-800min(hatch) after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. A stage after elongation is over. The last stage of embryogenesis. Also called pre-hatched embryo, late embryo or morphogenetic embryo. | fully-elongated embryo Ce | WBls:0000021 | ||
| The C. elegans life stage spanning 460-520min after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. The shape of embryo is elongated and double fold. A stage between 1.5-fold embryo and 3-fold embryo. | 2-fold embryo Ce | WBls:0000019 | ||
| The C. elegans life stage spanning 520-620min after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. The shape of embryo is elongated and tripple fold. A stage between 2-fold embryo and fully-elongated embryo. Also called pretzel embryo or pretzel stage. | 3-fold embryo Ce | WBls:0000020 | ||
| The C. elegans life stage spanning 420-460min after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. The shape of embryo is elongated and fold back 50%. A stage between comma embryo and 2-fold embryo. | 1.5-fold embryo Ce | WBls:0000018 |
