Thursday, May 24, 2012

Pig Disection: Circulatory and Respiratory Systems



In this picture you can see the thyroid gland and the thymus glands. The thymus gland helps in the development and upkeep of the immune system. The thyroid gland secretes hormones that help in metabolism. Behind the thyroid gland is the trachea, which allows air to be brought to the lungs. Behind the trachea is the esophagus, which transports food from the mouth to the stomach.

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