Which of these processes occurs in the mouth?

A. Ingestion

B. Mechanical digestion

C. Chemical digestion

D. All of the above

Answer Explanation:

All of these processes occur in the mouth. Ingestion involves taking food into the mouth, mechanical digestion includes the physical breakdown of food through chewing and mixing with saliva, and chemical digestion begins with the action of enzymes in saliva, such as amylase, which starts to break down carbohydrates.

Therefore, the Correct Answer is D.

Q #1: Contraction of the external intercostal muscles causes which of the following to occur?

A. The diaphragm moves downward

B. The rib cage is compressed

C. The thoracic cavity volume decreases

D. The ribs and sternum move upward

Answer Explanation

The intercostal muscles are muscles are located along the ribs. The intercostal muscles assist in respiration mechanically. This allows the expansion and contraction of the thorax.
Contraction of the external intercostal muscle causes the ribs and sternum move upward.
Q #2: Which of these processes occurs in the mouth?

A. Ingestion

B. Mechanical digestion

C. Chemical digestion

D. All of the above

Answer Explanation

All of these processes occur in the mouth. Ingestion involves taking food into the mouth, mechanical digestion includes the physical breakdown of food through chewing and mixing with saliva, and chemical digestion begins with the action of enzymes in saliva, such as amylase, which starts to break down carbohydrates.
Q #3: Which of these organs is not considered an accessory digestive structure?

A. mouth

B. salivary glands

C. pancreas

D. liver

Answer Explanation

Accessory organs of the digestive system comprise of organs that empty secretions into the alimentary canal. These organs include salivary glands, liver, gallbladder and pancreas. The mount if path of the alimentary canal.

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Which of these processes occurs in the mouth?

More Questions on TEAS 7 Science

Q #1: Contraction of the external intercostal muscles causes which of the following to occur?

Answer Explanation

Q #2: Which of these processes occurs in the mouth?

Answer Explanation

Q #3: Which of these organs is not considered an accessory digestive structure?

Answer Explanation

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