Answer the following statements true (T) or false (F)
1. Dentin in the teeth is the hardest substance in the body.
2. Air and food share sections of the pharynx.
3. The pyloric sphincter is also called the cardiac sphincter.
4. Peristalsis is a wave-like muscular contraction that propels food through the digestive system.
5. The jejunum receives food from the stomach.
1. FALSE
Explanation: Enamel on the teeth is the hardest substance in the body.
2. TRUE
3. FALSE
The lower esophageal, not the pyloric, sphincter is also called the cardiac
sphincter.
4. TRUE
5. FALSE
The duodenum, not the jejunum, receives food from the stomach.
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