HESI A2 Anatomy and Physiology Quizlet 2024

Correct Answer: A

Rationale: The correct answer is A: right atrium. The vena cavae are large veins that carry deoxygenated blood from the body back to the heart. They empty into the right atrium, which is the receiving chamber for deoxygenated blood. The blood then passes through the tricuspid valve into the right ventricle for pumping to the lungs for oxygenation. Choices B, C, and D are incorrect because the vena cavae do not empty into the ventricles; they empty into the atria. Therefore, the correct answer is A as it accurately reflects the anatomical pathway of blood flow from the vena cavae back to the heart.

Correct Answer: A

Rationale: The correct answer is A: right atrium. The vena cavae are large veins that carry deoxygenated blood from the body back to the heart. They empty into the right atrium, which is the receiving chamber for deoxygenated blood. The blood then passes through the tricuspid valve into the right ventricle for pumping to the lungs for oxygenation. Choices B, C, and D are incorrect because the vena cavae do not empty into the ventricles; they empty into the atria. Therefore, the correct answer is A as it accurately reflects the anatomical pathway of blood flow from the vena cavae back to the heart.

Correct Answer: B

Rationale: The correct answer is B: Approximately 30. The human skull is composed of 22 bones, including 8 cranial bones and 14 facial bones. These bones together form the structure of the skull. Choice A (Approximately 5) is incorrect as the skull consists of more than 5 bones. Choice C (Approximately 60) and Choice D (Approximately 210) are incorrect as they greatly overestimate the actual number of bones in the human skull. The correct answer, B, aligns with the anatomical knowledge of the human skull structure.

Correct Answer: C

Rationale: The correct answer is C: Caloric intake should decline with age. As individuals age, their metabolism slows down, leading to a decreased calorie requirement. Consuming more calories than needed can lead to weight gain and various health issues. Therefore, it is essential to adjust calorie intake based on age and activity level. Choices A, B, and D are incorrect because caloric intake typically decreases as individuals age due to changes in metabolism and activity levels.

Correct Answer: D

Rationale: The correct answer is D: Esophagus. The esophagus is the organ through which muscles push food into the stomach via peristalsis. Peristalsis is the wave-like muscle contractions that help move food down the digestive tract. The mouth is responsible for chewing and swallowing food, not pushing it into the stomach. The small intestine is where most of the digestion and absorption of nutrients occur, but it does not play a role in pushing food into the stomach. The epiglottis is a flap of tissue that prevents food from entering the airway during swallowing, but it is not involved in pushing food into the stomach.