Fill in the Blanks:
- Digestion begins in the ________, where teeth chew food and saliva softens it.
Answer: mouth
- The ________ is a muscular tube that carries food from the mouth to the stomach.
Answer: esophagus
- In the stomach, ________ juices help break down food into a paste.
Answer: gastric
- Most nutrients from food are absorbed in the ________, which is about 18 feet long.
Answer: small intestine
- Water is absorbed in the ________, and undigested food is excreted through the anus.
Answer: large intestine
Questions and Answers:
- What is digestion?
Answer: Digestion is the process of breaking down food into smaller particles that can be absorbed by the body.
- Which organs are involved in digestion?
Answer: The organs involved in digestion are the mouth, food pipe (esophagus), stomach, small intestine, liver, pancreas, large intestine, and anus.
- What role does saliva play in digestion?
Answer: Saliva, secreted by salivary glands, helps soften food and aids in breaking it down further for digestion.
- What is the function of the tongue during digestion?
Answer: The tongue helps in mixing saliva with food, making it easier to swallow. It also contains taste buds to identify sweet, sour, salty, and bitter tastes.
- What happens to food in the stomach?
Answer: In the stomach, food is stored for several hours, and gastric juices break it down into a paste before it moves to the small intestine.
- What is the role of the pancreas in digestion?
Answer: The pancreas secretes juices that help in the digestion of carbohydrates.
- Where is bile juice stored, and what is its role?
Answer: Bile juice is stored in the gallbladder and helps in breaking down fats during digestion in the small intestine.
- How is the small intestine important for digestion?
Answer: The small intestine absorbs most nutrients from food into the blood after breaking it into fine particles with the help of pancreatic and bile juices.
- What happens to undigested food in the large intestine?
Answer: In the large intestine, water is absorbed from undigested food, and the remaining waste is sent out of the body through the anus.
- List three healthy eating habits.
Answer:
- Wash your hands before eating.
- Eat lots of fruits and vegetables.
- Avoid eating oily and junk food.