Organs

1. This hollow muscular organ churns food and mixes it with digestive juices.
4. This organ produces insulin to regulate blood sugar levels.
6. The voice box, responsible for sound production.
8. Organ responsible for filtering waste and excess fluids from the blood.
10. The part of the eye responsible for controlling the amount of light that enters.
13. The body's largest internal organ, with functions in digestion and detoxification.
15. These air sacs are the primary site of gas exchange in the respiratory system.

2. A double-membraned organelle responsible for cellular respiration.
3. The brain's outermost layer, responsible for higher-level thinking.
5. Organ that stores and concentrates bile.
7. An essential endocrine gland located in the neck, regulating metabolism.
9. These are responsible for the body's movement and support.
11. Intestine where digestion and nutrient absorption primarily occur.
12. The body's primary filter of foreign substances and toxins from the blood.
14. Primary pumping organ of the circulatory system.