| Name: | metencephalic artery |
|---|---|
| Synonyms: | metencephalic arteries |
| Definition: | These arteries branch dorsally from both sides of the posterior communicating artery looping up to join with the opposite MtA as well as with both middle cerebral veins at the dorsal midline of the head. |
| Ontology: | Anatomy Ontology [ZFA:0005084] |
| Name: | pericyte |
|---|---|
| Synonyms: | pericytes, perivascular cells |
| Definition: | An elongated, contractile cell found wrapped about precapillary arterioles outside the basement membrane. Pericytes are present in capillaries where proper adventitial and muscle layer are missing (thus distinguishing this cell type from adventitial cells). They are relatively undifferentiated and may become fibroblasts, macrophages, or smooth muscle cells. |
| Ontology: | Anatomy Ontology [ZFA:0009112] |