External Anatomy Of A Dogfish Shark

The spiny dogfish has a double dorsal fin. Water is taken in through the smaller opening and expelled through the larger opening.

Dogfish Internal Anatomy Diagram Wiring Diagram Images Gallery

External anatomy of the dogfish shark.

External anatomy of a dogfish shark. Lateral line a pale line that extends noticeably from the pectoral fin past the pelvic fin. Smaller dorsal fin stabilizes shark while swimming and prevents pitching caudal fintail fin divided into 2 lobes. View from the side.

A pale line that extends the length of the shark. The nares or external nostrils are located on the underside ventral surface of the rostrum anterior to the jaws. Water passes into and out of the olfactory sac permitting the shark to detect the odors of the water.

Dogfish shark external anatomy. This line is actually a group of small pores which open into the underlying lateral line canal a sensory organ that detects water movements. They are located caudally from the mouth.

A sharks sense of smell is unbelievably keen. A nasal flap separates the incurrent from the excurrent opening. External anatomy of the dogfish shark.

The patches of pores on the head in the areas of the eyes snout and nostrils are the openings of the ampullae of lorenzini. The nostrils of a shark are and external part of the shark anatomy and on the ventral side of their bodies. External and internal anatomy of a dogfish shark a cartilaginous fish.

A large dorsal lobe and a small ventral lobe. Located caudal side of the pectoral fin pleuroperitoneal cavity holds all the organs in the abdonimal cavity. For example they can detect a drop of blood hundreds of feet away.

Since the sharks can only use their nose for smelling gills provide them a passage for them to breathe by absorbing oxygen from the water. Phylum chordata subphylum vertebrata class chondrichthyes. Such as liver gallbladder stomach pancreas etc.

It helps with digestion like another animals would however. Gills sharks have gills on either side of their head. 3 list of the 5 fins of the dogfish shark 2 dorsal pectoral pelvic caudal the depressor of the pectoral fin allows the pectoral fins to lower.

The anterior dorsal fin is larger than the posterior dorsal fin. These sense organs are sensitive to changes in temperature water pressure electrical fields and salinity. A pair of openings at the front of the head that function to detect chemicals in the environment.

Some species of sharks have barbells otherwise known as whiskers near their nostrils. The line is made up of a series of tiny pores that lead to receptors that are sensitive to the mechanical movement of water and sudden changes of pressure.

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