The skeletal system gives the body structure and produces these.
What are red blood cells?
Strength training with weights improves this type of density.
What is bone density?
A house, like the human body, is made up of interworking what?
What are systems?
The urinary system removes waste through this process.
What is urinary excretion?
Movement helps achieve internal balance, also called this.
What is homeostasis?
The muscular system creates movement through the contraction of these.
What are muscle fibers?
Movement like brisk walking or swimming helps improve this process.
What is digestion?
The plumbing system brings water to this household item.
What is the water heater?
The digestive system eliminates waste through this process.
What is defecation?
Homeostasis is more easily achieved through movement than this.
What is relaxation?
The endocrine system regulates activities by producing these.
What are hormones?
Movement improves sleep, which helps with cellular what?
What is repair?
The lymphatic system works with this other system to catch bacteria.
What is the immune system?
The reproductive system produces offspring and certain what?
What are hormones?
Elevated heart rate improves circulation and delivery of these.
What are nutrients?
The cardiovascular system circulates blood using the heart, veins, arteries, and these.
What are capillaries?
Running and biking stretch lung fibers, helping take in more of this.
What is oxygen?
The nervous system communicates between the brain and these.
What are systems?
The respiratory system helps regulate this measure of blood acidity.
What is pH?
Movement enhances the lymphatic system, improving oxygenation of what?
What is blood?