Skeletal & Muscular System
Skeletal System:
ALL sharks are a type of fish that have no bones, only cartilage. Some parts of their skeleton, like their vertebrae, are calcified. Cartilage, a strong fibrous substance, is softer than bone, but very tough.
Sharks belong to the group of fishes called Elasmobranchs, which also includes the rays & skates. The Elasmobranchs are all fish that have no bones, only cartilage.
Muscular System:
Because sharks are so cartilage heavy, they are extremely bulky in muscle. Bull sharks have red and white fibers, which are used especially when swimming. Swimming is a series of muscle contractions that requires a multitude of energy throughout the sharks body. However, the most complex muscular movement in a shark is it's ability to bite down. Combined wit hits jaw strength, teeth, and muscle fibers, the bull shark redeems its reputation by biting down on anything and cutting into ito pieces instantly. All together, each indecent muscle contration helps the shark somehow, some way to perform its daily actions.
ALL sharks are a type of fish that have no bones, only cartilage. Some parts of their skeleton, like their vertebrae, are calcified. Cartilage, a strong fibrous substance, is softer than bone, but very tough.
Sharks belong to the group of fishes called Elasmobranchs, which also includes the rays & skates. The Elasmobranchs are all fish that have no bones, only cartilage.
Muscular System:
Because sharks are so cartilage heavy, they are extremely bulky in muscle. Bull sharks have red and white fibers, which are used especially when swimming. Swimming is a series of muscle contractions that requires a multitude of energy throughout the sharks body. However, the most complex muscular movement in a shark is it's ability to bite down. Combined wit hits jaw strength, teeth, and muscle fibers, the bull shark redeems its reputation by biting down on anything and cutting into ito pieces instantly. All together, each indecent muscle contration helps the shark somehow, some way to perform its daily actions.