1. Not all animals have the same type of digestive system. In cows and other ruminants, several different stomachs are part of the digestive system. Why do different animals have different digestive systems?
2. Match the correct symptom with a deficiency in ACTH, per the article:
3. What is the main function of the nervous system?
4. Which of these endocrine glands situated in the brain interacts closely with the hypothalamus?
5. Phantom pain is a phenomenon in which someone loses a limb to an accident or amputation, but can still feel pain in the limb after it is gone. To treat this condition, doctors sometimes stimulate nerves in other parts of the body, such as nerves in the face when someone suffers phantom pain in their arm. Why does this stop the pain from the phantom limb?
6. The lymphatic system is an important part of the circulatory system. What are the major functions of the lymphatic system?
7. Which of these statements about the vagus nerve is true?
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