what is the role of the stomach in the digestive system
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HESI A2

Quizlet HESI A2 Anatomy and Physiology

1. What is the primary role of the stomach in the digestive system?

Correct answer: B

Rationale: The primary role of the stomach in the digestive system is to break down food. It accomplishes this through the action of gastric acid and digestive enzymes, which work together to break down food into a semi-liquid mixture known as chyme. Option B, 'To break down food,' is the correct answer. Option A, 'To absorb nutrients,' is incorrect because absorption mainly occurs in the small intestine. Option C, 'To secrete digestive enzymes,' is partially correct as the stomach does secrete digestive enzymes, but its primary function is to break down food. Option D, 'To store glucose,' is incorrect as glucose storage primarily occurs in the liver and muscles, not the stomach.

2. What is implied by this paragraph?

Correct answer: A

Rationale: The paragraph implies that overeating and alcohol abuse can lead to serious physical and mental health problems. It highlights the strain on the heart, risk of diabetes, and shortened lifespan due to overeating. It also mentions the negative consequences of alcohol abuse, such as alcoholism, drunk driving leading to accidents, and spousal/child abuse. While emotional eating is mentioned, the main focus is on the health risks of overeating and alcohol abuse. Therefore, choice A is the correct answer as it captures the essence of the paragraph's message.

3. Which of the following is a characteristic of an exothermic reaction?

Correct answer: B

Rationale: An exothermic reaction is characterized by the release of heat. During an exothermic reaction, energy is released in the form of heat to the surroundings, resulting in a temperature increase. This distinguishes it from endothermic reactions, which absorb heat from the surroundings. Choice A is incorrect because exothermic reactions do not absorb heat; instead, they release heat. Choice C is incorrect as exothermic reactions do not remain neutral; they involve a net release of energy. Choice D is incorrect as exothermic reactions do not require energy input; instead, they release energy.

4. Which word is a synonym for ASSURED?

Correct answer: A

Rationale: The correct answer is 'Confirmed the truth of' because 'assured' means to make certain or confident. To confirm the truth of something is to provide certainty, which aligns with the meaning of 'assured.' Choice B, 'Sympathized with,' is incorrect as it means to express compassion or understanding, which is not synonymous with 'assured.' Choice C, 'Denied the truth of,' is incorrect as it means to reject or contradict the truth, which is the opposite of 'assured.' Choice D, 'Made known to,' is incorrect as it refers to revealing or informing, which is not synonymous with 'assured.'

5. Solve: 2 - 8(24 รท 2).

Correct answer: A

Rationale: To solve the expression, we follow the order of operations (PEMDAS). First, we divide 24 by 2 to get 12. Then, we multiply 8 by 12, which equals 96. Finally, we subtract 96 from 2: 2 - 96 = -94. Therefore, the correct answer is A, '-94'. Choices B, C, and D are incorrect as they do not follow the correct order of operations or make errors during calculation.

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