what is the meaning of digestion

HESI A2

HESI A2 Practice Vocabulary

1. What is the process of digestion?

A. Production of enzymes
B. The mechanical and chemical breakdown of food
C. Absorption of nutrients in the blood
D. Movement of enzymes

Correct answer: B

Rationale: The correct answer is B: The mechanical and chemical breakdown of food. Digestion involves breaking down food mechanically and chemically into smaller components for absorption by the body. This process occurs in the digestive system, preparing nutrients for absorption in the intestines. Choices A, C, and D are incorrect because digestion is not solely about the production of enzymes, absorption of nutrients in the blood, or movement of enzymes; it primarily involves breaking down food for nutrient absorption.

2. How does being overweight predispose a person to a particular condition?

A. Cancer
B. Diabetes
C. Heart disease
D. Obesity

Correct answer: B

Rationale: Being overweight increases the risk of developing conditions like diabetes. Excessive weight can lead to insulin resistance and metabolic dysfunction, which are key factors in the development of type 2 diabetes. While obesity is a result of being overweight, it is not a condition that being overweight predisposes a person to. Cancer and heart disease can also be influenced by weight but are not the primary conditions typically associated with being overweight.

3. Select the meaning of the word 'intact' in the sentence: 'It is important that the bandage remain intact.'

A. Dry
B. Whole
C. Uncovered
D. Secure

Correct answer: B

Rationale: The correct answer is 'B: Whole'. In this context, 'intact' means undisturbed or whole, referring to the bandage being complete and not damaged. Choice A, 'Dry', is incorrect as it does not reflect the meaning of 'intact' in this sentence. Choice C, 'Uncovered', is also incorrect as 'intact' does not imply uncovered but rather complete. Choice D, 'Secure', is not the best fit as 'intact' in this context emphasizes the undamaged or whole nature of the bandage.

4. What does Vacuous mean?

A. Empty
B. Full
C. Dense
D. Bright

Correct answer: A

Rationale: The correct answer is A: 'Empty.' Vacuous means lacking intelligence, empty-headed, or devoid of substance. Choice B, 'Full,' is incorrect as it is the opposite of vacuous. Choice C, 'Dense,' means closely compacted or stupid, not vacuous. Choice D, 'Bright,' means giving out or reflecting a lot of light, not vacuous.

5. Choose the meaning of the word projected in the following sentence: 'Treatment is projected to last three months or more.'

A. Protruded
B. Guaranteed
C. Estimated
D. Alleged

Correct answer: C

Rationale: In this context, 'projected' is used to indicate an estimation or prediction of the duration of the treatment. Therefore, it aligns closest in meaning to 'estimated.' Choice A, 'Protruded,' means to extend beyond or above a surface, which does not fit the context of the sentence. Choice B, 'Guaranteed,' means to provide assurance, which is not the intended meaning in the sentence. Choice D, 'Alleged,' means to claim without proof, which is not the correct interpretation in this context.