Human Body: The

The Human Body: Vessel, Witness, and Frontier

• Oxygen (O) – 65%
• Carbon (C) – 18.5%
• Hydrogen (H) – 9.5%
• Nitrogen (N) – 3.2%
• Calcium (Ca) – 1.5%
• Phosphorus (P) – 1.0%

: You have 206 bones that act as your internal frame. Interestingly, you were born with about 300, but some fused together as you grew. The Muscles

7. Respiratory System

The human body is an incredible biological machine, composed of roughly 37 trillion cells working in perfect harmony The Human Body

Children’s Floor Puzzles

: Larger 200-piece sets like those from Sassi Junior that come with educational books. Anatomical Pieces (The "Parts") The Human Body: Vessel, Witness, and Frontier

1. Interactive 3D Anatomy Viewer

• Hydration: Water makes up 60% of the body. A 2% loss impairs cognitive function.
• Movement: Sitting is the new smoking. The lymphatic system (which removes toxins) has no pump—it relies entirely on muscle movement.
• Sleep: During deep sleep, the glymphatic system washes the brain with cerebrospinal fluid, clearing out beta-amyloid plaques associated with Alzheimer's.
• Nutrition: You are not just what you eat; you are what your cells absorb. Phytonutrients, fiber, and lean proteins build resilient biology.

muscular system

Attached to this frame is the . With over 600 muscles, this system allows for everything from the powerful stride of a sprinter to the microscopic adjustments of the eye. Muscles operate through a constant cycle of contraction and relaxation, fueled by the energy we consume. 2. The Command Center: The Nervous System Oxygen (O) – 65% Carbon (C) – 18