This line is actually a group of small pores which open into the underlying lateral line canal a sensory organ that detects water movements. Pick it up squeeze it feel it.
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Lateral line a pale line that extends noticeably from the pectoral fin past the pelvic fin.
Dogfish shark external anatomy. Phylum chordata subphylum vertebrata class chondrichthyes. The spiny dogfish has a double dorsal fin. The spines carry a poison secreted by glands at their base.
Gills sharks have gills on either side of their head. Water taken in by the mouth and spiracles is passed over the internal gills and forced out by way of the gill slits. 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.
Water is taken in through the smaller opening and expelled through the larger opening. The liver largest organ 3 lobes two main lobes the right and left lobes extend from the length of the cavity. Digestive anatomy of the dogfish shark a smooth shiny membrane called peritoneum can be seen lining the inside of the body wall.
External anatomy of the dogfish shark. Such as liver gallbladder stomach pancreas etc. Most sharks have five external gill slits located on thire sides behind the mouth and in front of the pectoral fins.
A third lobe much shorter lobe contains the green gall bladder along its right edge. External anatomy of the dogfish shark. Dogfish shark external anatomy.
Located caudal side of the pectoral fin pleuroperitoneal cavity holds all the organs in the abdonimal cavity. All members of the lab group should touch the shark. The spiny dogfish has the presence two spines one immediately in front of each dorsal fin.
A pair of openings at the front of the head that function to detect chemicals in the environment. Shark dissection instructions part 1. A pale line that extends the length of the shark.
External and internal anatomy of a dogfish shark a cartilaginous fish. External anatomy the shark has a graceful and streamlined body shape built for fast long distance swimming. It helps with digestion like another animals would however.
The anterior dorsal fin is larger than the posterior dorsal fin. They are located caudally from the mouth. 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.
View from the side. The body is divided into the head trunk and tail.
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