External Anatomy Of A Dogfish Shark

View from the side. Gills sharks have gills on either side of their head.

Squalus Acanthias Spiny Dogfish

A nasal flap separates the incurrent from the excurrent opening.

External anatomy of a dogfish shark. This line is actually a group of small pores which open into the underlying lateral line canal a sensory organ that detects water movements. 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. A large dorsal lobe and a small ventral lobe.

Water is taken in through the smaller opening and expelled through the larger opening. Dogfish shark external anatomy. The anterior dorsal fin is larger than the posterior dorsal fin.

External anatomy of the dogfish shark. Such as liver gallbladder stomach pancreas etc. A pale line that extends the length of the shark.

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. External anatomy of the dogfish shark.

The nostrils of a shark are and external part of the shark anatomy and on the ventral side of their bodies. Located caudal side of the pectoral fin pleuroperitoneal cavity holds all the organs in the abdonimal cavity. A sharks sense of smell is unbelievably keen.

The patches of pores on the head in the areas of the eyes snout and nostrils are the openings of the ampullae of lorenzini. Smaller dorsal fin stabilizes shark while swimming and prevents pitching caudal fintail fin divided into 2 lobes. 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.

Lateral line a pale line that extends noticeably from the pectoral fin past the pelvic fin. External and internal anatomy of a dogfish shark a cartilaginous fish. It helps with digestion like another animals would however.

The spiny dogfish has a double dorsal fin. 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 nares or external nostrils are located on the underside ventral surface of the rostrum anterior to the jaws.

Phylum chordata subphylum vertebrata class chondrichthyes. Water passes into and out of the olfactory sac permitting the shark to detect the odors of the water. They are located caudally from the mouth.

These sense organs are sensitive to changes in temperature water pressure electrical fields and salinity. For example they can detect a drop of blood hundreds of feet away.

External Anatomy Of A Dogfish Shark Diagram Quizlet