Body Systems

2. The skin and its accessory organs
4. A combination of body defenses made up of the cells tissues and organs that fight pathogens in the body
6. System of protection and support composed primarily of bone and cartilage
10. Fast-acting control system that employs nerve impulses to trigger muscle contraction or gland secretion
11. Body system that includes internal organs that secrete hormones
12. Organ system that carries out gas exchange; includes the nose, pharynx, larynx, trachea, bronchi, and lungs

1. Organ system that functions to produce offspring
3. Organ system that distributes blood to all parts of the body
5. Organ system consisting of skeletal muscles and their connective tissue attachments
7. A system of lymphatic vessels, lymph nodes, and other lymphoid organs and tissues
8. System primarily responsible for water, electrolyte, and acid-base balance and the removal of nitrogenous wastes from the blood
9. System that processes food into absorbable units and eliminates indigestible wastes