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- ...neck. The thyroid produces hormones to regulate metabolism and calcium balance in the body.
- Lymph nodes
- ...neck, underarms, chest, abdomen, and groin. Lymph nodes store white blood cells that help fight infection. They also filter lymphatic fluid. Sometimes they are called lymph glands.
- ...neck of the bladder and urethra in men. It supplies seminal fluid, the milky liquid that contains sperm, for ejaculation.