give 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 fin
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give 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 fin
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- give the function of these stingray parts. 1. eye 2. snout 3. mouth 4. nostril 5. spiracle 6. gill slits 7. cloaca 8. pectoral fin 9. pelvic fin 10. dorsal fin 11. tailBriefly describe the parts of the shark. - basibranchial - hemal arch - scapular cartilage -ceratotrichia -neural spine -hemal spine1. 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.
- Gill slits First dorsal fin ܐܐܐܐ Pectoral fin 3a. Six gill slits 3b. Five gill slits Dorsal surface 4a. One dorsal fin 4b. Two dorsal fins Anatomy of a shark. Use these terms to help you work through the key below. Key la. Body, as seen from the top, shaped like a kite 1b. Body, as seen from the top, not shaped like a kite 2a. Pelvic fin absent 2b. Pelvic fin present Second dorsal fin Pelvic fin 5a. Mouth located at front of snout 5b. Mouth located on underside of head 8a. First dorsal fin extremely long 8b. First dorsal fin regular length 9a. Caudal fin extremely long 9b. Caudal fin regular length Anal fin 6a. Head expanded, with eyes located at end of expansion 6b. Head not expanded 7a. Top half of caudal fin same as bottom half 7b. Top half of caudal fin different than bottom half go to 12 go to 2 Pristiophoridae go to 3 Hexanchidae go to 4 Scyliorhinidae go to 5 -Caudal fin Rhincodontidae go to 6 Sphrynidea go to 7 Isuridae go to 8 Pseuodotriakidae go to 9 Alopiidae go to 10A shark has a _________ skeleton, whereas a tuna has a _________ skeleton.In both sharks and bony fish, the lateral line has the function of: O a. Detecting water vibrations. O b. It is part of the excretory system. O c. Secreting a layer of mucus over the skin. O d. Detecting chemicals in the water. O e. Strengthening the body.
- Figure 29.3 Which of the following statements about common features of chordates is true? The dorsal hollow nerve cord is part of the chordate central nervous system. In vertebrate fishes, the pharyngeal slits become the gills. Humans are not chordates because humans do not have a tail. Vertebrates do not have a notochord at any point in their development; instead, they have a vertebral column.1. Observe the behavior of the live goldfish. Note the movement of the operculum. What is its function? Does a shark have an operculum? 2. Examine the model of the bony fish. Compare the fins, shape of the tail, scales and other external features with the shark. How do the fins of fish contribute to the evolutionary story of animals evolving to life on land? 1. Observe and compare the features of the amphibian specimens. 2. The frog will be used to review vertebrate anatomy. Begin by examining the thin skin of the frog. How does it compare to the skin of a reptile? Would the frogs skin help protect it against water loss? How is the frog able to supply its body tissues with enough oxygen even if there is some mixing of oxygenated deoxygenated blood? Amphibian, literally means “living on both sides”. Explain why amphibians have that name. What characteristics do reptiles have that make them more suited for terrestrial life than amphibians? Why are birds thought of as flying…Differentiate the basic parts of the shark's pectoral girdle and pectoral fins with the pelvic girdle and pelvic fins.
- Fins of a bony fish are flexible and diverse in shape. Describe the location of a fin present in bony fish but not in sharks.Explain how bony fishes differ from sharks and rays in the following systems or features: skeleton, scales, buoyancy, respiration, and reproduction.Contrast the swimming of sharks with that of bony fishes.