Upgraded B002 Ntbi0303 Contrasting Notochord Stomochord Cross — a labelled NEET Biology diagram with a definitions lexicon.
A schematic comparison drawing. On one side, a labeled cross-section showing a robust, continuous Notochord (Chordate). On the other side, a similar section showing a less defined, temporary Stomochord (Hemichordate), emphasizing its developmental nature. Labelled parts: Pharyngeal Gill Slits, Cross-section, Gill Slits, Notochord, Gills, Chordate, temporary Stomochord, Hemichordate. Openings in the pharynx that allow water to exit, functioning in respiration or feeding. A diagrammatic view of an organ or tissue obtained by cutting it at a right angle to its longitudinal axis. FYI: Transverse sections (T.S.) are standard in plant anatomy to study the arrangement of vascular bundles. Individual openings to the gills found in the pharyngeal region of chordates, used for respiration and filter feeding. FYI: In cartilaginous fish, gill slits are separate and exposed, whereas in bony fish, they are covered by a bony flap called the operculum. A flexible, rod-like structure derived from mesoderm that provides support in chordates. Thin, folded structures found in the respiratory system of aquatic organisms, such as fish and bivalves, used for gas exchange. FYI: In fish, the gills are housed within the operculum and are crucial for maintaining the necessary oxygen levels in aquatic environments. Chordate is a labeled feature or concept in this upgraded BioAtlas image: A schematic comparison drawing. On one side, a labeled cross-section showing a robust, continuous Notochord (Chordate). On the other side, a similar section showing a less defin... temporary Stomochord is a labeled feature or concept in this upgraded BioAtlas image: A schematic comparison drawing. On one side, a labeled cross-section showing a robust, continuous Notochord (Chordate). On the other side, a similar section showing a less defin... Hemichordate is a labeled feature or concept in this upgraded BioAtlas image: A schematic comparison drawing. On one side, a labeled cross-section showing a robust, continuous Notochord (Chordate). On the other side, a similar section showing a less defin...