The body senses, communicates and responds through nervous tissue. Neurons receive signals from receptors, process information in the brain and spinal cord, then transmit messages to muscles or organs, enabling quick and coordinated responses to stimuli.
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These actions are controlled by nervous tissue. Neurons quickly transmit signals to the brain and muscles, enabling rapid responses like withdrawing from heat. Nervous tissue also stores and processes information, helping memory and learning functions effectively.
Bones contribute about 12–15 percent of an adult human’s body weight. This percentage may vary depending on age, gender and body composition. Bones provide support, protection, posture and structure, forming the framework of the musculoskeletal system.
Bones contribute about 12–15 percent of body weight in adults. Muscles contribute nearly 30–50 percent in males and 30–40 percent in females. Together, bones and muscles form the musculoskeletal system that supports movement and posture.
Bone and muscle mass differ because of age, gender, nutrition, genetics and physical activity. Bones provide support and protection, while muscles help movement and posture. Together, they contribute significantly to total body weight and body strength.