Quizlet HESI A2 Anatomy and Physiology - Nurselytic

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.

Correct Answer: A

Rationale: The pharynx is a structure found in the upper respiratory tract. It serves as a common pathway for both air and food, playing a crucial role in directing air to the trachea and food to the esophagus. The larynx, trachea, and esophagus are important structures in the respiratory and digestive systems, but the pharynx specifically belongs to the upper respiratory tract, making it the correct answer.

Correct Answer: B

Rationale: The primary function of the digestive system is to break down food into smaller molecules and absorb nutrients such as vitamins, minerals, carbohydrates, proteins, and fats. These nutrients are then utilized by the body for energy, growth, and repair. The digestive system plays a crucial role in the process of extracting essential components from food and distributing them to the body's cells through the bloodstream.

Choices A, C, and D are incorrect because transporting oxygen, producing hormones, and transporting blood are functions associated with other body systems like the respiratory system, endocrine system, and circulatory system, respectively, not the digestive system.

Correct Answer: B

Rationale: The correct function of the lungs in the respiratory system is to exchange gases. The lungs facilitate the exchange of oxygen and carbon dioxide between the air we breathe in and the blood, ensuring oxygen is absorbed and carbon dioxide is removed during respiration.
Choice A is incorrect as the kidneys, not the lungs, filter blood.
Choice C is incorrect as energy production primarily occurs in cells, not in the lungs.
Choice D is incorrect as waste removal, such as the excretion of carbon dioxide, is a function of the lungs, but the primary function is the exchange of gases.

Correct Answer: A

Rationale: The correct answer is A: '
To produce bile.' The liver's primary role in the digestive system is to produce bile. Bile is essential for emulsifying fats, aiding in their digestion and absorption in the small intestine.
Choice B is incorrect because while the liver does secrete some digestive enzymes, its primary function is bile production.
Choice C is incorrect because while the liver does store glucose, it is not its primary function in the digestive system.
Choice D is incorrect because the liver produces bile, but it does not store it.