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Muscular System


The ability of an organism to move from one place to another. Locomotion.
Two types of locomotion. Sessile and motile.
Sessile. Stationary, remains in place. (Ex: plants, barnacles, corals)
Motile. Able to move. (Ex: humans, reptiles, amphibians)
True or False: Sessile organisms have an advantage over motile organisms. False, motile organisms have an advantage over sessile organisms.
Advantages motile organisms have over sessile organisms. They can obtain food, escape predators, can find mates and shelter.
A skeleton made up of bone and cartilage located within the body's walls. Endoskelton.
Examples of organisms with an endoskelton. Humans, birds, and whales.
A skeleton found on the outside of the body enclosing the soft parts that helps with protection. Exoskeleton.
Examples of organisms that have an exoskeleton. Beetles, crabs, and turtles.
True or False: Bones are hard and inflexible. True.
Five function of bones. Support and protect the body, points of attachment in muscles, produce blood cells in the marrow, act as a lever to produce movement, and storage site for minerals.
Bones are composed of ________________ and _______________. Calcium and phosphorus.
A point in the skeleton where bones will meet. Joint.
Four types of joints. Ball and socket, hinge, pivot, and gliding.
Type of connective tissue in bone. Collagen.
Flexible, fibrous, and elastic tissue. Cartilage.
Function of cartilage. Provides flexibility between joints, as well as cushioning against impact and pressure.
A type of muscle that is made of cells that have the ability to contract and exert a pulling force. Muscle tissue.
Type of muscle with a striated appearance, voluntary. (Ex: triceps) Skeletal muscle.
True or False: Involuntary means under conscious control. False, voluntary means under conscious control.
Non-striated muscle that is involuntary. Smooth muscle.
____________ muscles make up the muscles of digestive organs, including the stomach lining and blood vessels. Smooth.
Muscles that are involuntary and striated. Cardiac muscle.
_____________ muscles make up the heart. Cardiac.
Tough, elastic, fibrous cords of connective tissue that connect muscle to bone. Tendon.
Tough, fibrous bands of tissue that connect bone to bone. Ligament.
Inflammation of joints. Arthritis.
Inflammation of tendons. Tendinitis.
Bones that have been moved from their normal position. Dislocation.
Injuries of the ligaments. Sprain.
Injuries of the muscle. Strain.
Created by: emarciante9



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