Fish Vertebral Column Anatomy - Neural & Haemal Arches, Myosepta, and Axial Canal #3678761 (License: Personal Use)

This diagram illustrates the segmented vertebral structure of a fish, with labeled features including the neural arch (NA) dorsal to the axial canal (AC), the haemal arch (HA) ventral to it, lateral processes (LT) extending laterally, and myosepta (MR) separating muscle segments. The axial canal houses the spinal cord and runs centrally through the vertebrae, while the alternating arrangement supports both flexibility and structural integrity during swimming.

Used in academic biology, ichthyology, and comparative anatomy resources to teach vertebrate skeletal morphology; matches user intent for educational diagrams, textbook illustrations, or research reference on fish locomotion and axial support systems.