Musculoskeletal System
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1. Hydrostatic found mostly in aquatic organisms such as octopusses, jellyfishes, sea anemones,
skeletons and tunicates. Although earthworms and velvetworms have this type of skeleton as
well.
2. arthropods These life have segmented exoskeletons that bend only at the joints. The exoskele-
ton covers the entire surface of the body, including the eyes. The thickness of the
exoskeleton varies depending on the nature and function of the body part it covers.
For example, the exoskeleton is thinner at the joints, which require a degree of
flexibility in order to bend.
3. axial skeleton This group of bones is made up of the skull, spinal column, and ribs. This skeleton
provides the general framework from which the appendicular skeleton hangs.
4. appendicular This group of bones consists of the pelvic girdle, pectoral girdle, and the ap-
skeleton pendages (arms and legs).
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, Musculoskeletal System
Study online at https://quizlet.com/_jrlm9b
5. ossification The hardening of bone. Some bones fuse together, reducing the total number of
bony elements. At birth, human infants have over 300 bones. As adults, they have
206.
6. Vertebrata An animal group that includes fishes, amphibians, reptiles, and mammals. The
vertebrate skeleton is an internal collection of relatively rigid structures joined by
more flexible regions. The hard components of the skeleton are made up of bone,
cartilage , or a combination of these two connective tissues
7. Cartilage This is a type of connective tissue. It is a firm gel-like substance. The body contains
three major types of cartilage: hyaline cartilage, elastic cartilage, and fibrocartilage.
2/9
Study online at https://quizlet.com/_jrlm9b
1. Hydrostatic found mostly in aquatic organisms such as octopusses, jellyfishes, sea anemones,
skeletons and tunicates. Although earthworms and velvetworms have this type of skeleton as
well.
2. arthropods These life have segmented exoskeletons that bend only at the joints. The exoskele-
ton covers the entire surface of the body, including the eyes. The thickness of the
exoskeleton varies depending on the nature and function of the body part it covers.
For example, the exoskeleton is thinner at the joints, which require a degree of
flexibility in order to bend.
3. axial skeleton This group of bones is made up of the skull, spinal column, and ribs. This skeleton
provides the general framework from which the appendicular skeleton hangs.
4. appendicular This group of bones consists of the pelvic girdle, pectoral girdle, and the ap-
skeleton pendages (arms and legs).
1/9
, Musculoskeletal System
Study online at https://quizlet.com/_jrlm9b
5. ossification The hardening of bone. Some bones fuse together, reducing the total number of
bony elements. At birth, human infants have over 300 bones. As adults, they have
206.
6. Vertebrata An animal group that includes fishes, amphibians, reptiles, and mammals. The
vertebrate skeleton is an internal collection of relatively rigid structures joined by
more flexible regions. The hard components of the skeleton are made up of bone,
cartilage , or a combination of these two connective tissues
7. Cartilage This is a type of connective tissue. It is a firm gel-like substance. The body contains
three major types of cartilage: hyaline cartilage, elastic cartilage, and fibrocartilage.
2/9
