Answer:
Osteons are cylindrical structures that contain a mineral matrix and living osteocytes connected by canaliculi, which transport blood. They are aligned parallel to the long axis of the bone. Each osteon consists of lamellae, which are layers of the compact matrix that surround a central canal called the Haversian canal.
Proper muscular fitness improve posture
Explanation:
Good posture and body balance is highly essential for good health of the body. This helps to avoid risks of mechanical injuries. A proper muscular fitness regime has huge benefits like providing good energy levels, efficiently working heart, improves endurance, builds confidence and improves body balance and maintains posture.
To maintain a good posture, muscular fitness, flexibility, strength, strong skeletal structure, and normal joint movements are necessary. Posture defines the way one should stand, sit, or lie.
Strength training exercises provides good muscular fitness and aids in good body mechanics. This helps to maintain good body balance and coordination as well as posture.
Americans all ages can suffer from mental disorders
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Playing sports / games outside (encouraging other teens to play with them)
