Locomotion is the movement of an entire organism from one place to another. Only animals can perform locomotion, whereas plants and other organisms may move parts of their bodies without changing location. In animals, locomotion relies on the skeletal and muscular systems. π¦΄πͺ
A skeleton is a supportive structure that provides mechanical support and protection to the body. Multicellular organisms have three types of skeletons:
This skeleton is composed of internal fluids that provide support and aid movement. Found in soft-bodied invertebrates like earthworms, hydra, and sea anemones. π
Locomotion in Earthworms: Earthworms move by contracting circular and longitudinal muscles, producing a wave-like motion along the body from front to back. π
An exoskeleton is an external structure providing protection and support, found in arthropods (e.g., insects, crustaceans). π¦
Located inside the body, the endoskeleton is made of bones and cartilage, typical of vertebrates (fish, amphibians, reptiles, birds, and mammals). π πΈππ¦π
The human skeleton consists of axial and appendicular regions:
Muscle Types: Cardiac β€οΈ, Smooth, and Skeletal muscles contribute to movement in different ways.
Gout: Caused by uric acid crystals forming in joints, leading to swelling and pain. π