Human Physiology Locomotion And Movement
Concepts to remember for the JEE exam and CBSE board exams on the of Human Physiology Locomotion and Movement:
1. Skeletal System:
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Structure and functions of bones:
- Bones provide support and protection, store minerals, produce blood cells, and enable movement.
- Bones are composed of various tissues, including bone cells, bone matrix, and bone marrow.
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Types of joints: Synovial joints (freely movable), cartilaginous joints (slightly movable), and fibrous joints (immovable).
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Types of movements at different joints: Flexion, extension, abduction, adduction, circumduction, rotation.
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Bone growth and development: Process of ossification, growth plates, hormones involved in growth.
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Disorders of the skeletal system: Osteoporosis, arthritis, fractures, and growth disorders.
2. Muscular System:
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Structure and functions of muscles: Muscles generate force and movement, produce heat, and protect vital organs.
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consist of muscle cells (myocytes) and connective tissues.
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Types of muscles: Striated (skeletal), smooth (visceral), and cardiac.
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Mechanism of muscle contraction: Sliding filament mechanism involving actin and myosin protein filaments.
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Energy metabolism in muscles: ATP production through glycolysis, oxidative phosphorylation, and phosphagen system.
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Muscle fatigue and recovery: Causes of muscle fatigue, muscle soreness (DOMS), and recovery process.
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Disorders of the muscular system: Muscular dystrophy, myasthenia, and muscle cramps.
3. Types of Movements:
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Skeletal movements: Movements of the body by skeletal muscles, include voluntary movements and reflex actions.
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Non-skeletal movements: Movements without skeletal muscles, such as peristalsis and ciliary movement.
4. Posture and Balance:
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Maintaining posture: Role of muscles, bones, and joints in maintaining good posture.
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Role of proprioceptors in maintaining balance: Sensing body position and movement, contributing to balance and coordination.
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Disorders affecting posture and balance: Conditions like scoliosis, kyphosis, and vestibular disorders.
5. Locomotion:
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Different modes of locomotion: Walking, running, jumping, swimming, and crawling.
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Biomechanics of locomotion: Analyze the forces, movements, and energy involved in various forms of locomotion.
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Energy cost of locomotion: Amount of energy required for different modes of locomotion.
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Factors affecting locomotion: Speed, endurance, gait, and environmental factors.