HUMAN PHYSIOLOGY: LOCOMOTION AND MOVEMENT

SKELETAL SYSTEM AND ITS FUNCTIONS

Skeletal system is made up of bones and cartilage. It is oftwo types; axial and appendicular skeleton. Skeletal system performs functions like;support, movement, protection,sexual dimorphism, mineral haemostasis.

MOVEMENT AND ITS TYPES

Movement is one of the significant features of all living organism. Movement involves four basic mechanism:amoeboid, ciliary, flagellar and muscular. There are three types of muscles that helps in locomotion; skeletal, visceral and cardiac muscles.

MUSCLE CONTRACTION

Muscle cells are specialized for contraction which also helps in bodily processes such as respiration and digestion.Sarcomere must shortens for a muscle cell to contract.The sliding filament model defines the concept of muscle contraction.

JOINTS

Joints is a point of articulation where two or more bones meet. The motions like spin, swing, approximation and gliding movements are made possible by joints. Joints can be classified as fibrous, cartilaginous and synovial joints. Pivot and hinge joints are synovial joints.

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