HESI A2 Anatomy and Physiology Quizlet 2024

Correct Answer: D

Rationale: The correct answer is D: Diaphysis. The diaphysis refers to the middle region of a long bone, such as the humerus. In this case, the orthopedic surgeon is describing the part of the bone where the break has occurred. The other choices are incorrect because: A: Epiphysis is the end of a long bone, not the middle region. B: Articular cartilage is the smooth, slippery surface covering the ends of bones in a joint, not the middle region. C: Perichondrium is the connective tissue surrounding cartilage, not the middle region.

Correct Answer: D

Rationale: The correct answer is D: Irregular heartbeat. Stenosis of a heart valve can cause restricted blood flow, leading to abnormal heart rhythms. This occurs because the heart has to work harder to pump blood through the narrowed valve, resulting in irregular heartbeats. Abdominal pain (A) is not typically associated with stenosis of a heart valve. Blood clots (B) are more commonly linked to conditions such as atrial fibrillation. Edema (swelling) in organs (C) is usually a result of fluid retention, which can be seen in heart failure but is not directly caused by stenosis of a heart valve.

Correct Answer: C

Rationale: The correct answer is C: Inflammation. Inflammation is a secondary defense mechanism that occurs when tissues are injured, triggering a response to remove harmful stimuli and promote healing. It involves increased blood flow, white blood cell migration, and release of cytokines. Tears (A) and mucus (D) are primary defenses that help prevent pathogens from entering the body. Urine (B) is not a defense mechanism but rather a waste product excreted by the kidneys. In summary, inflammation plays a crucial role in fighting pathogens by mobilizing the immune system, making it the correct secondary defense mechanism choice.

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.