Nursing Elites

1. What is the primary function of the small intestine in digestion?

• A. Breaking down fats
• B. Absorbing nutrients
• C. Secreting digestive enzymes
• D. Storing bile

Correct answer: B

Rationale: The correct answer is B: Absorbing nutrients. The small intestine plays a crucial role in digestion by absorbing nutrients. It is where the majority of nutrient absorption occurs, allowing digested food to pass into the bloodstream for distribution to the body's cells. Choice A (Breaking down fats) is incorrect because the breakdown of fats primarily occurs in the small intestine with the help of bile from the liver and enzymes from the pancreas. Choice C (Secreting digestive enzymes) is incorrect because while the small intestine does produce some digestive enzymes, its primary role is absorption. Choice D (Storing bile) is incorrect as the storage of bile occurs in the gallbladder, not the small intestine.

2. Which cellular structure is responsible for energy production?

• A. Nucleus
• B. Mitochondria
• C. Ribosome
• D. Golgi apparatus

Correct answer: B

Rationale: Corrected Question: Mitochondria are organelles known as the powerhouses of the cell. They generate energy through cellular respiration, producing ATP, which is used for various cellular functions. This process is crucial for providing the energy necessary to fuel cellular activities and sustain life. The other choices, the nucleus, ribosome, and Golgi apparatus, are important cellular structures but are not directly responsible for energy production. The nucleus houses the cell's genetic material, the ribosome is involved in protein synthesis, and the Golgi apparatus is responsible for processing and packaging proteins.

3. What is the primary function of the liver?

• A. Detoxifying harmful substances
• B. Producing bile
• C. Producing insulin
• D. Storing glycogen

Correct answer: A

Rationale: The primary function of the liver is to detoxify harmful substances in the blood. While the liver also produces bile, which aids in digestion, stores glycogen for energy storage, and participates in metabolism, its main and essential function is detoxification. Producing insulin is mainly attributed to the pancreas, not the liver.

4. How many bones are found in the human skull?

• A. Approximately 5
• B. Approximately 30
• C. Approximately 60
• D. Approximately 210

Correct answer: B

Rationale: The correct answer is B: Approximately 30. The human skull is composed of 22 bones that are fused together. These 22 bones consist of 8 cranial bones and 14 facial bones, totaling approximately 30 bones in total. Choices A, C, and D are incorrect because the human skull does not have as few as 5 bones, as many as 60 bones, or as many as 210 bones. Understanding the basic anatomy of the skull helps in identifying the correct number of bones it comprises.

5. What is the main function of the adrenal glands?

• A. Regulation of metabolism
• B. Production of bile
• C. Regulation of blood pressure
• D. Production of insulin

Correct answer: C

Rationale: The main function of the adrenal glands is to produce hormones like adrenaline and cortisol. These hormones play a crucial role in regulating blood pressure, metabolism, and the body's stress response. While the adrenal glands do have some impact on metabolism, their primary function is not the direct regulation of metabolism. They are not involved in the production of bile or insulin. Therefore, the correct answer is the regulation of blood pressure.

Similar Questions