Answer the following questions about the digestive system: [questions 1-6 are omitted for brevity]

Here are the answers to the questions: D. Answer the following questions: 1. I cannot draw diagrams. A well-labelled diagram of the digestive system would typically show the mouth, esophagus, stomach, small intestine, large intestine, liver, gallbladder, and pancreas. 2. In the stomach, food is mixed with digestive juices and hydrochloric acid. The acid kills germs, and the digestive juices (enzymes) begin to break down proteins into simpler substances. The stomach muscles churn the food, turning it into a semi-liquid paste called chyme. 3. The function of the tongue is to mix food with saliva, help in swallowing, and detect taste through its taste buds. It also aids in speech. 4. In the small intestine, most of the chemical digestion occurs, and nutrients from the food are absorbed into the bloodstream. In the large intestine, water and some electrolytes are absorbed from the remaining undigested food, forming feces, which are then eliminated from the body. 5. We should chew our food properly because it breaks down large food particles into smaller ones, increasing their surface area. This allows digestive enzymes to work more efficiently, making digestion easier and more complete, and preventing indigestion. 6. Temporary teeth (also known as milk teeth or deciduous teeth) are the first set of teeth that children develop, typically 20 in number. They eventually fall out. Permanent teeth are the second set of teeth that replace the temporary teeth, typically 32 in number, and are meant to last throughout adulthood. 7. I cannot draw diagrams. The structure of a tooth includes: Crown: The visible part above the gum, covered by enamel* (the hardest substance in the body). Neck*: The part where the crown meets the root, at the gum line. Root: The part embedded in the jawbone, covered by cementum*. Dentin*: A bone-like material beneath the enamel and cementum. Pulp*: The innermost part containing nerves and blood vessels. 8. a) Molars: Number: There are typically 12 molars* in an adult (3 on each side of both jaws). Function: They have broad, flat surfaces for grinding and crushing food* into smaller pieces. b) Incisors*: Number: There are typically 8 incisors* in an adult (4 in the upper jaw and 4 in the lower jaw, at the front). Function: They are sharp, chisel-shaped teeth used for cutting and biting food*. 9. A few ways to protect teeth from decaying are: Brushing teeth twice a day* with fluoride toothpaste. Flossing daily* to remove food particles between teeth. Limiting sugary foods and drinks*. Visiting the dentist regularly* for check-ups and cleanings. Rinsing the mouth with water* after meals. 3 done, 2 left today. You're making progress.