Term IRI Term label Parent term IRI Parent term label Alternative term Definition http://purl.obolibrary.org/obo/BILA_0000004 portion of organism substance http://purl.obolibrary.org/obo/BILA_0000006 material anatomical entity Material anatomical entity in a gaseous, liquid, semisolid or solid state; produced by anatomical structures or derived from inhaled and ingested substances that have been modified by anatomical structures as they pass through the body. http://purl.obolibrary.org/obo/BILA_0000027 male organism http://purl.obolibrary.org/obo/BILA_0000048 gonochoristic organism Gonochoristic organism that can produce male gametes. http://purl.obolibrary.org/obo/BILA_0000029 hermaphroditic organism http://purl.obolibrary.org/obo/BILA_0000012 multi-cellular organism Multi-cellular organism that can produce both male and female gametes. http://purl.obolibrary.org/obo/BILA_0000040 acellular anatomical structure http://purl.obolibrary.org/obo/BILA_0000003 anatomical structure Anatomical structure that consists of cell parts and cell substances and together does not constitute a cell or a tissue. http://purl.obolibrary.org/obo/BILA_0000043 portion of tissue http://purl.obolibrary.org/obo/BILA_0000003 anatomical structure Anatomical structure, that consists of similar cells and intercellular matrix, aggregated according to genetically determined spatial relationships. http://purl.obolibrary.org/obo/BILA_0000011 anatomical system http://purl.obolibrary.org/obo/BILA_0000054 anatomical group Anatomical group that is has as its parts distinct anatomical structures interconnected by anatomical structures at a lower level of granularity. http://purl.obolibrary.org/obo/BILA_0000012 multi-cellular organism http://purl.obolibrary.org/obo/BILA_0000003 anatomical structure Anatomical structure that is an individual member of a species and consists of more than one cell. http://purl.obolibrary.org/obo/BILA_0000017 eye http://purl.obolibrary.org/obo/BILA_0000140 photosensory system The minimum setting for an eye involves a photo-receptor in the vicinity of shading pigment, which allows the detection of the direction of light. A simple eye consists of one photoreceptor and one pigment cell. Such prototype two- celled eyes are found, for example, in trochophora larvae and in planarians. Our definition also includes single photosensitive cells containing both photo- and shading pigment (eg. unicellular algae, turbellarian 'epidermal eyes'), but excludes photoreceptor cells not combined with shading pigment (eg. deep brain photoreceptor cells). http://purl.obolibrary.org/obo/BILA_0000018 appendage http://purl.obolibrary.org/obo/BILA_0000032 organism subdivision An appendage is an external body part, or natural prolongation, that protrudes from an organism's body, such as a vertebrate's limbs. http://purl.obolibrary.org/obo/BILA_0000019 compound organ component http://purl.obolibrary.org/obo/BILA_0000055 multi-tissue structure Multi-tissue structure that is part of a compound organ. http://purl.obolibrary.org/obo/BILA_0000024 compound organ http://purl.obolibrary.org/obo/BILA_0000003 anatomical structure Anatomical structure that has as its parts two or more multi-tissue structures of at least two different types and which through specific morphogenetic processes forms a single distinct structural unit demarcated by bona fide boundaries from other distinct anatomical structures of different types. http://purl.obolibrary.org/obo/BILA_0000032 organism subdivision http://purl.obolibrary.org/obo/BILA_0000003 anatomical structure Anatomical structure which is a primary subdivision of whole organism. The mereological sum of these is the whole organism. http://purl.obolibrary.org/obo/BILA_0000042 extraembryonic structure http://purl.obolibrary.org/obo/BILA_0000003 anatomical structure Anatomical structure that is contiguous with the embryo and is comprised of portions of tissue or cells that will not contribute to the embryo. http://purl.obolibrary.org/obo/BILA_0000045 sequential hermaphroditic organism http://purl.obolibrary.org/obo/BILA_0000029 hermaphroditic organism Hermaphroditic organism that produces gametes first of one sex, and then later of the other sex. http://purl.obolibrary.org/obo/BILA_0000046 synchronous hermaphroditic organism http://purl.obolibrary.org/obo/BILA_0000029 hermaphroditic organism Hermaphroditic organism that produces both male and female gametes at the same time. http://purl.obolibrary.org/obo/BILA_0000048 gonochoristic organism http://purl.obolibrary.org/obo/BILA_0000012 multi-cellular organism Multi-cellular organism that has male and female sexes. http://purl.obolibrary.org/obo/BILA_0000049 protandrous hermaphroditic organism http://purl.obolibrary.org/obo/BILA_0000045 sequential hermaphroditic organism Sequential hermaphroditic organism that produces gametes first of the male sex, and then later of the female sex. http://purl.obolibrary.org/obo/BILA_0000050 protogynous hermaphroditic organism http://purl.obolibrary.org/obo/BILA_0000045 sequential hermaphroditic organism Sequential hermaphroditic organism that produces gametes first of the female sex, and then later of the male sex. http://purl.obolibrary.org/obo/BILA_0000062 cell space http://purl.obolibrary.org/obo/BILA_0000005 anatomical space Anatomical space that is part of a cell. http://purl.obolibrary.org/obo/BILA_0000063 portion of cell substance http://purl.obolibrary.org/obo/BILA_0000004 portion of organism substance Portion of organism substance located within a cell. http://purl.obolibrary.org/obo/BILA_0000064 single cell organism http://purl.obolibrary.org/obo/BILA_0000013 cell Cell that is an individual member of a species. http://purl.obolibrary.org/obo/BILA_0000065 basal lamina http://purl.obolibrary.org/obo/BILA_0000040 acellular anatomical structure Acellular anatomical structure that consists of a thin sheet of fibrous proteins that underlie and support the cells of an epithelium. It separates the cells of an epithelium from any underlying tissue. http://purl.obolibrary.org/obo/BILA_0000066 epithelium http://purl.obolibrary.org/obo/BILA_0000043 portion of tissue Portion of tissue, that consists of one or more layers of epithelial cells connected to each other by cell junctions and which is underlain by a basal lamina. http://purl.obolibrary.org/obo/BILA_0000069 multilaminar epithelium http://purl.obolibrary.org/obo/BILA_0000066 epithelium Epithelium that consists of more than one layer of epithelial cells. http://purl.obolibrary.org/obo/BILA_0000070 simple squamous epithelium http://purl.obolibrary.org/obo/BILA_0000073 unilaminar epithelium Unilaminar epithelium that consists of a single layer of squamous cells. http://purl.obolibrary.org/obo/BILA_0000071 atypical epithelium http://purl.obolibrary.org/obo/BILA_0000066 epithelium Epithelium that consists of epithelial cells not arranged in one ore more layers. http://purl.obolibrary.org/obo/BILA_0000072 cavitated compound organ http://purl.obolibrary.org/obo/BILA_0000024 compound organ Compound organ that contains one or more macroscopic anatomical spaces. http://purl.obolibrary.org/obo/BILA_0000073 unilaminar epithelium http://purl.obolibrary.org/obo/BILA_0000066 epithelium Epithelium that consists of a single layer of epithelial cells. http://purl.obolibrary.org/obo/BILA_0000074 solid compound organ http://purl.obolibrary.org/obo/BILA_0000024 compound organ Compound organ that does not contain macroscopic anatomical spaces. http://purl.obolibrary.org/obo/BILA_0000077 epithelial cell http://purl.obolibrary.org/obo/BILA_0000013 cell Cell which has as its part a cytoskeleton that allows for tight cell to cell contact and which has apical-basal cell polarity. http://purl.obolibrary.org/obo/BILA_0000115 head http://purl.obolibrary.org/obo/BILA_0000032 organism subdivision The head of an animal is the anterior part that usually comprises the brain, eyes, ears, nose, and mouth. http://purl.obolibrary.org/obo/BILA_0000005 anatomical space http://purl.obolibrary.org/obo/BILA_0000007 immaterial anatomical entity Non-material anatomical entity of three dimensions, that is generated by morphogenetic or other physiologic processes; is surrounded by one or more anatomical structures; contains one or more organism substances or anatomical structures. http://purl.obolibrary.org/obo/BILA_0000006 material anatomical entity http://purl.obolibrary.org/obo/BILA_0000000 anatomical entity Anatomical entity that has mass. http://purl.obolibrary.org/obo/BILA_0000014 cell component http://purl.obolibrary.org/obo/BILA_0000003 anatomical structure Anatomical structure that is a direct part of the cell. http://purl.obolibrary.org/obo/BILA_0000021 simple organ http://purl.obolibrary.org/obo/BILA_0000055 multi-tissue structure Multi-tissue structure that is not part of a compound organ. http://purl.obolibrary.org/obo/BILA_0000041 anatomical cluster http://purl.obolibrary.org/obo/BILA_0000054 anatomical group Anatomical group that has its parts adjacent to one another. http://purl.obolibrary.org/obo/BILA_0000013 cell http://purl.obolibrary.org/obo/BILA_0000003 anatomical structure Anatomical structure that has as its parts a maximally connected cell compartment surrounded by a plasma membrane. http://purl.obolibrary.org/obo/BILA_0000028 female organism http://purl.obolibrary.org/obo/BILA_0000048 gonochoristic organism Gonochoristic organism that can produce female gametes. http://purl.obolibrary.org/obo/BILA_0000003 anatomical structure http://purl.obolibrary.org/obo/BILA_0000006 material anatomical entity Material anatomical entity that has inherent 3D shape and is generated by coordinated expression of the organism's own genome. http://purl.obolibrary.org/obo/BILA_0000007 immaterial anatomical entity http://purl.obolibrary.org/obo/BILA_0000000 anatomical entity Anatomical entity that has no mass. http://purl.obolibrary.org/obo/BILA_0000009 anatomical point http://purl.obolibrary.org/obo/BILA_0000007 immaterial anatomical entity Non-material anatomical entity of zero dimension, which forms a boundary of an anatomical line or surface. http://purl.obolibrary.org/obo/BILA_0000010 anatomical surface http://purl.obolibrary.org/obo/BILA_0000007 immaterial anatomical entity Non-material anatomical entity of two dimensions, that is demarcated by anatomical lines or points on the external or internal surfaces of anatomical structures. http://purl.obolibrary.org/obo/BILA_0000054 anatomical group http://purl.obolibrary.org/obo/BILA_0000003 anatomical structure Anatomical structure consisting of at least two non-overlapping organs, multi-tissue aggregates or portion of tissues or cells of different types that does not constitute an organism, organ, multi-tissue aggregate, or portion of tissue. http://purl.obolibrary.org/obo/BILA_0000055 multi-tissue structure http://purl.obolibrary.org/obo/BILA_0000003 anatomical structure Anatomical structure that has as its parts two or more portions of tissue of at least two different types and which through specific morphogenetic processes forms a single distinct structural unit demarcated by bona-fide boundaries from other distinct structural units of different types. http://purl.obolibrary.org/obo/BILA_0000068 simple columnar epithlium http://purl.obolibrary.org/obo/BILA_0000073 unilaminar epithelium Unilaminar epithelium that consists of a single layer of columnar cells. http://purl.obolibrary.org/obo/BILA_0000008 anatomical line http://purl.obolibrary.org/obo/BILA_0000007 immaterial anatomical entity Non-material anatomical entity of one dimension, which forms a boundary of an anatomical surface or is a modulation of an anatomical surface. http://purl.obolibrary.org/obo/BILA_0000030 asexual organism http://purl.obolibrary.org/obo/BILA_0000012 multi-cellular organism Multi-cellular organism that does not produce gametes. http://purl.obolibrary.org/obo/BILA_0000067 simple cuboidal epithelium http://purl.obolibrary.org/obo/BILA_0000073 unilaminar epithelium Unilaminar epithelium that consists of a single layer of cuboidal cells. http://purl.obolibrary.org/obo/BILA_0000016 cardiovascular system http://purl.obolibrary.org/obo/BILA_0000011 anatomical system http://purl.obolibrary.org/obo/BILA_0000079 nervous system http://purl.obolibrary.org/obo/BILA_0000011 anatomical system http://purl.obolibrary.org/obo/BILA_0000104 immune system http://purl.obolibrary.org/obo/BILA_0000011 anatomical system http://purl.obolibrary.org/obo/BILA_0000082 digestive system http://purl.obolibrary.org/obo/BILA_0000011 anatomical system http://purl.obolibrary.org/obo/BILA_0000122 urogenital system http://purl.obolibrary.org/obo/BILA_0000011 anatomical system http://purl.obolibrary.org/obo/BILA_0000088 musculature system http://purl.obolibrary.org/obo/BILA_0000011 anatomical system http://purl.obolibrary.org/obo/BILA_0000056 embryonic organism http://purl.obolibrary.org/obo/BILA_0000012 multi-cellular organism http://purl.obolibrary.org/obo/BILA_0000076 juvenile organism http://purl.obolibrary.org/obo/BILA_0000012 multi-cellular organism http://purl.obolibrary.org/obo/BILA_0000078 adult organism http://purl.obolibrary.org/obo/BILA_0000012 multi-cellular organism http://purl.obolibrary.org/obo/BILA_0000116 trunk http://purl.obolibrary.org/obo/BILA_0000032 organism subdivision http://purl.obolibrary.org/obo/BILA_0000117 tail http://purl.obolibrary.org/obo/BILA_0000032 organism subdivision http://purl.obolibrary.org/obo/BILA_0000118 surface http://purl.obolibrary.org/obo/BILA_0000032 organism subdivision http://purl.obolibrary.org/obo/BILA_0000037 mesoderm http://purl.obolibrary.org/obo/BILA_0000035 germ layer http://purl.obolibrary.org/obo/BILA_0000036 ectoderm http://purl.obolibrary.org/obo/BILA_0000035 germ layer http://purl.obolibrary.org/obo/BILA_0000038 endoderm http://purl.obolibrary.org/obo/BILA_0000035 germ layer http://purl.obolibrary.org/obo/BILA_0000057 zygote embryo http://purl.obolibrary.org/obo/BILA_0000056 embryonic organism http://purl.obolibrary.org/obo/BILA_0000058 cleaving embryo http://purl.obolibrary.org/obo/BILA_0000056 embryonic organism http://purl.obolibrary.org/obo/BILA_0000059 blastula embryo http://purl.obolibrary.org/obo/BILA_0000056 embryonic organism http://purl.obolibrary.org/obo/BILA_0000060 gastrula embryo http://purl.obolibrary.org/obo/BILA_0000056 embryonic organism http://purl.obolibrary.org/obo/BILA_0000061 neurula embryo http://purl.obolibrary.org/obo/BILA_0000056 embryonic organism http://purl.obolibrary.org/obo/BILA_0000075 segmenting embryo http://purl.obolibrary.org/obo/BILA_0000056 embryonic organism http://purl.obolibrary.org/obo/BILA_0000139 chemosensory system http://purl.obolibrary.org/obo/BILA_0000099 sensory system http://purl.obolibrary.org/obo/BILA_0000140 photosensory system http://purl.obolibrary.org/obo/BILA_0000099 sensory system http://purl.obolibrary.org/obo/BILA_0000142 mechanosensory system http://purl.obolibrary.org/obo/BILA_0000099 sensory system http://purl.obolibrary.org/obo/BILA_0000143 gustatory system http://purl.obolibrary.org/obo/BILA_0000139 chemosensory system http://purl.obolibrary.org/obo/BILA_0000144 olfactory system http://purl.obolibrary.org/obo/BILA_0000139 chemosensory system http://purl.obolibrary.org/obo/BILS_0000106 zygote stage http://purl.obolibrary.org/obo/BILS_0000105 bilateria developmental stage http://purl.obolibrary.org/obo/BILS_0000107 cleavage stage http://purl.obolibrary.org/obo/BILS_0000105 bilateria developmental stage http://purl.obolibrary.org/obo/BILS_0000108 blastula stage http://purl.obolibrary.org/obo/BILS_0000105 bilateria developmental stage http://purl.obolibrary.org/obo/BILS_0000109 gastrula stage http://purl.obolibrary.org/obo/BILS_0000105 bilateria developmental stage http://purl.obolibrary.org/obo/BILS_0000110 neurula stage http://purl.obolibrary.org/obo/BILS_0000105 bilateria developmental stage http://purl.obolibrary.org/obo/BILS_0000111 organogenesis stage http://purl.obolibrary.org/obo/BILS_0000105 bilateria developmental stage http://purl.obolibrary.org/obo/BILS_0000112 juvenile stage http://purl.obolibrary.org/obo/BILS_0000105 bilateria developmental stage http://purl.obolibrary.org/obo/BILS_0000113 adult stage http://purl.obolibrary.org/obo/BILS_0000105 bilateria developmental stage http://purl.obolibrary.org/obo/BILA_0000034 embryonic structure http://purl.obolibrary.org/obo/BILA_0000003 anatomical structure http://purl.obolibrary.org/obo/BILA_0000125 ovary http://purl.obolibrary.org/obo/BILA_0000123 gonad http://purl.obolibrary.org/obo/BILA_0000124 testis http://purl.obolibrary.org/obo/BILA_0000123 gonad http://purl.obolibrary.org/obo/BILA_0000035 germ layer http://purl.obolibrary.org/obo/BILA_0000034 embryonic structure http://purl.obolibrary.org/obo/BILA_0000052 blastomere http://purl.obolibrary.org/obo/BILA_0000034 embryonic structure http://purl.obolibrary.org/obo/BILA_0000053 organizer http://purl.obolibrary.org/obo/BILA_0000034 embryonic structure http://purl.obolibrary.org/obo/BILA_0000084 primitive gut http://purl.obolibrary.org/obo/BILA_0000034 embryonic structure http://purl.obolibrary.org/obo/BILA_0000132 visceral muculature http://purl.obolibrary.org/obo/BILA_0000088 musculature system http://purl.obolibrary.org/obo/BILA_0000133 somatic musculature http://purl.obolibrary.org/obo/BILA_0000088 musculature system http://purl.obolibrary.org/obo/BILA_0000134 cardiac musculature http://purl.obolibrary.org/obo/BILA_0000088 musculature system http://purl.obolibrary.org/obo/BILA_0000015 excretory system The excretory system is the system of an organism that mainly performs the function of excretion, the bodily process of discharging wastes. It is responsible for the elimination of wastes produced by the processes that maintain homeostasis. http://purl.obolibrary.org/obo/BILA_0000080 central nervous system In physiological terms, a CNS integrates and processes sensory information coming from the periphery, and initiates body-wide responses via neurosecretion into the body fluid or direct stimulation of the body musculature. Anatomically, a CNS is a delimited nervous tissue that comprises distinct agglomerations of functionally specialized neurons (nuclei) interconnected by axon tracts (neuropil). The CNS may be subdivided into separate parts (ganglia). It connects to the periphery via nerves. A CNS thus defined is found in various shapes and degrees of complexity in different animal phyla, including vertebrates and many invertebrates, such as echinoderms, arthropods, nematodes, molluscs and annelids. http://purl.obolibrary.org/obo/BILA_0000126 protonephridium http://purl.obolibrary.org/obo/BILA_0000127 metanephridium http://purl.obolibrary.org/obo/BILA_0000128 nephros http://purl.obolibrary.org/obo/BILA_0000020 heart http://purl.obolibrary.org/obo/BILA_0000044 visceral mesoderm http://purl.obolibrary.org/obo/BILA_0000047 somatic mesoderm http://purl.obolibrary.org/obo/BILA_0000051 cardiac mesoderm http://purl.obolibrary.org/obo/BILA_0000081 peripheral nervous system http://purl.obolibrary.org/obo/BILA_0000083 digestive tract http://purl.obolibrary.org/obo/BILA_0000086 midgut http://purl.obolibrary.org/obo/BILA_0000087 hindgut http://purl.obolibrary.org/obo/BILA_0000099 sensory system http://purl.obolibrary.org/obo/BILA_0000103 reproductive system http://purl.obolibrary.org/obo/BILA_0000135 brain http://purl.obolibrary.org/obo/BILA_0000136 nerve cord http://purl.obolibrary.org/obo/BILS_0000105 bilateria developmental stage http://purl.obolibrary.org/obo/BILA_0000000 anatomical entity http://purl.obolibrary.org/obo/BILA_0000123 gonad http://purl.obolibrary.org/obo/BILA_0000039 neuroectoderm http://purl.obolibrary.org/obo/BILA_0000085 foregut http://purl.obolibrary.org/obo/OBO_REL#_preceded_by preceded_by http://purl.obolibrary.org/obo/OBO_REL_relationship relationship P preceded_by P' if and only if: given any process p that instantiates P at a time t, there is some process p' such that p' instantiates P' at time t', and t' is earlier than t. http://purl.obolibrary.org/obo/OBO_REL_precedes precedes http://purl.obolibrary.org/obo/OBO_REL_relationship relationship http://purl.obolibrary.org/obo/OBO_REL_relationship relationship A relationship between two classes (terms). Relationships between classes are expressed in terms of relations on underlying instances. http://purl.obolibrary.org/obo/bila#develops_from develops_from http://purl.obolibrary.org/obo/bila#part_of part_of