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- Briefly describe the parts of the shark.Briefly describe the parts of the shark. - basibranchial - hemal arch - scapular cartilage -ceratotrichia -neural spine -hemal spineExplain how bony fishes differ from sharks and rays in the following systems or features: skeleton, scales, buoyancy, respiration, and reproduction.
- Briefly discuss the basic components of the shark’s visceral skeleton.Branchial arches of the shark support the gill pouches and each one consists of five cartilagous element. Arrange the elements belowfrom dorsal to ventral: hypobrancial, ceratobranchial, epibranchial, pharyngobranchial and basibranchial1. Briefly discuss the components of the shark’s vertebral column i.e. different sections, parts of the typical vertebra, and type of centrum. 2. Briefly discuss the basic components of the shark’s visceral skeleton. 3. Differentiate the basic parts of the shark’s pectoral girdle and pectoral fins with the pelvic girdle and pelvic fins.
- in observing ornamental fish swimming, identify the functions (propulsion, maintenance of upright orientation, braking, balance, or turning) of the different fins of a bony fish during swimming. functions dorsal fin caudal fin anal fin pelvic fin pectoral fingive the function of these shark parts. 1. pectoral fin 2. pelvic fin 3. anal fin 4. clasper 5. vent 6. precaudal pit 7. caudal keel 8. lower lobe 9. upper lobe 10. caudal finLabel the external anatomy of a typical bony fish below