13 - 7,7.1 & 7.2 Human Nutrition, The Human Digestive System

Digestion starts when you place the food in your mouth and start chewing. Once the food is chewed into a paste and you swallow it will enter the_____________.

• Small intestines

• Lungs

• Esophagus

• Trachea

Answer explanation

Once you swallow food, it travels down the esophagus, which connects the mouth to the stomach. The small intestines are further along in the digestive process, while the lungs and trachea are part of the respiratory system.

The acid in our stomach is powerful enough to break down metals like aluminum, how does our stomach protect itself from the acid within it?

• our stomachs are coated with a layer of mucus that protects its from the acid

• our stomachs are made of a special tissue that is resistant to acid

• our stomachs regenerate faster than the acids ability to break down tissue

• because it the stomach is basic

Answer explanation

Our stomachs are coated with a layer of mucus that protects it from the acid. This mucus barrier prevents the strong gastric acid from damaging the stomach lining, making it the correct choice.

What is the last section of the digestive system, where water is absorbed from food and the remaining material is eliminated from the body?

• Large Intestine

• Small Intestine

• Appendix

• Pharynx

Answer explanation

The last section of the digestive system is the Large Intestine, where water is absorbed from food. The remaining waste material is then prepared for elimination from the body.

What is the muscular tube that moves food from the mouth to the stomach?

• Uvula

• Esophagus

• Palate

• Salivary glands

Answer explanation

The esophagus is the muscular tube that transports food from the mouth to the stomach. The uvula and palate are parts of the mouth, while salivary glands produce saliva, but they do not move food.

What organ is next after the stomach?

• large intestine

• heart

• small intestine

• liver

Answer explanation

The small intestine follows the stomach in the digestive system. It is responsible for further digestion and nutrient absorption, making it the correct answer.

Muscles pushing food through the esophagus?

• Parachute

• Peristalsis

• Periwinkle

• Periscope

Answer explanation

The correct answer is 'Peristalsis', which refers to the wave-like muscle contractions that move food through the esophagus. Other options like 'Parachute', 'Periwinkle', and 'Periscope' are unrelated to this process.

The gloopy material food turns into in the stomach?

• Mucus

• Bile

• Gastrin

• Chyme

Answer explanation

The gloopy material food turns into in the stomach is called chyme. It is a semi-liquid mixture of food and digestive juices, which is essential for further digestion in the intestines.

The organ that stores the bodies waste products?

• large intestine

• kidney

• liver

• stomach

Answer explanation

The large intestine is responsible for storing waste products from the digestive process before they are eliminated from the body. It absorbs water and compacts waste, making it the correct answer.

Where does digestion begin?

• Mouth

• Knee

• Brain

• Stomach

Answer explanation

Digestion begins in the mouth, where food is mechanically broken down by chewing and mixed with saliva, which contains enzymes that start the chemical digestion process.

What is the name of the moist lump formed in the mouth during chewing?

• Enzyme

• Chyme

• Bolus

• Bile

Answer explanation

The moist lump formed in the mouth during chewing is called a bolus. It consists of food mixed with saliva, making it easier to swallow. Chyme refers to the semi-liquid mass in the stomach, while bile is a digestive fluid.