Locomotion In Human Beings: Definition, Functions, Types, Importance, Topics

Definition Of Locomotion

Locomotion is defined as the ability of an organism, which enables it to move from one place to another place that is in need for its existence and daily activities.

So, to enable an animal to move from place to place, it is of the essence for the human activity intending to perform survival, to perform recreations like collecting food and escaping danger, and social contact, and has greatly influenced human evolution, especially the origin of human structure and behaviour.

Structure Of The Human Locomotor System

The components of human locomotor systems are:

Skeleton And Muscles

• The human skeletal system gives the body its framework and supports the muscles that are put into action for movement.

• The human skeletal system and how it provides the framework and structural anchorage to the applied muscles.

• Names the types of muscles involved: Muscles of the skeletal system, attached to various bones in the human body via tendons.

• How the muscular system contracts and relaxes: A muscle has actin and myosin filaments that slide past each other.

Joints

• Joints play a role in the movement at the juncture of bones and provide the necessary flexibility and range of motion.

• Types of joints: Ball-and-socket joint(hip joints), hinge joint (knee joints), pivot joint, etc.

Role Of Joints In Movement:

• They allow various movements like flexion-extension, rotation, etc. depending upon type and location.

• For example, the ball-and-socket hip joint allows the movements of flexion-extension, rotation and circumduction of the lower limb.

Mechanism Of Locomotion

Understanding how we move means studying the detailed mechanisms underlying different modes of locomotion.

Walking

• Walking is the most common basic mode of human locomotion, relating to precision biomechanical processes.

• Muscular and skeletal adaptations: Foot arch structure, tendons elastic energy storage.

• Energy expenditure: Calculations of burnt calories per mile of walking.

Running

• Running is different from walking by being done at a higher speed and mechanics, which puts more energy and the need for extra effort into the muscles.

• With higher speed, the aerial phase pays the way for each stride.

• Impacts on joints and muscles: Higher loads on joints, changes in muscle fibre types (fast-twitch).

• Biomechanical efficiency: The influence of stride length and stride rate upon running economy.

Other Modes Of Locomotion

• Humans show versatility in movement rather than walking on the surface of the land. Humans have adapted to walking on water, including climbing.

• Swimming: Buoyancy, streamlined body shape, and different stroke techniques.

• Climbing: Gripping adaptations of hands and feet, muscular strength required for vertical movement.

Neurological Control Of Movement

The nervous system plays a very important role in movements including coordination and regulation, concerning both reflex and voluntary movements.

• Role of the central nervous system (CNS): Brain and spinal cord in control of voluntary and involuntary movements.

• Reflex movements: instinctual reactions to stimuli, not requiring thought consciousness.

• Voluntary motions: controlled and coordinated conscious brain mechanisms to begin and regulate.

Factors Affecting Human Locomotion

• With growth, maturity, and ageing processes, human beings have their locomotion undergo several drastic changes.

• Changes across the Lifespan: Developmental Stages Influencing Motor Skills.

• Effects of ageing: loss in muscle mass, joint flexibility, and reaction times.

• Injuries and disorders are able to affect locomotion and hence mobility and quality of life.

• Common Injuries: Sprains (injuries to the ligaments), fractures (breaks in the bones) and their effects on mobility.

• Disorders include but are not limited to rheumatoid and osteoarthritis, Parkinson's disease, and neurodegenerative disorders affecting motor control.

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