Task: Class Definition Understanding (ontology: Earth_Environment/EnvironmentOntology)

Which of the following definitions best describes 'retina'?

A. Embryonic ectoderm that gives rise to nervous tissue.
B. A blood vessel that is part of a brain [Automatically generated definition].
C. The the concept is the innermost layer or coating at the back of the eyeball, which is sensitive to light and in which the optic nerve terminates.
D. Neural crest cells (NCCs) originating in the anterior part of the developing embryo and residing between the mid-diencephalon and the forming hindbrain; cranial NCCs migrate dorsolaterally to form the craniofacial mesenchyme that differentiates into various craniofacial cartilages and bones, cranial neurons, glia, and connective tissues of the face; these cells enter the pharyngeal pouches and arches where they give rise to thymic cells, bones of the middle ear and jaw (mandible), and the odontoblasts of the tooth primordia; like their counterparts in the trunk, cranial NCCs also contribute to the developing peripheral nervous system, along with the pigmented cell (i.e. melanocyte) lineage.

Answer: The the concept is the innermost layer or coating at the back of the eyeball, which is sensitive to light and in which the optic nerve terminates.