HESI A2
HESI A2 Anatomy and Physiology Practice Exam
1. What is the average normal body temperature in degrees Celsius?
- A. 30°C
- B. 32°C
- C. 35°C
- D. 37°C
Correct answer: D
Rationale: The average normal body temperature in degrees Celsius is 37°C. This temperature is considered the standard measurement for the human body under normal conditions. It is essential to know this baseline temperature for monitoring health and detecting abnormalities such as fever. Choice A, 30°C, is too low for the average normal body temperature. Choice B, 32°C, is also below the standard normal body temperature. Choice C, 35°C, is closer but still lower than the average normal body temperature of 37°C.
2. Which vitamin is important for blood clotting?
- A. Vitamin C
- B. Vitamin K
- C. Vitamin A
- D. Vitamin D
Correct answer: B
Rationale: Vitamin K is crucial for the synthesis of proteins involved in blood clotting, aiding in the prevention of excessive bleeding. Without sufficient Vitamin K, the blood may not clot properly, leading to an increased risk of bleeding and other related complications. Vitamin C is essential for collagen synthesis and the immune system, not specifically for blood clotting. Vitamin A is important for vision and immune function. Vitamin D plays a role in calcium absorption and bone health, but it is not directly linked to blood clotting.
3. Which of the following statements is anatomically correct?
- A. The knee is distal to the ankle.
- B. The heart is inferior to the diaphragm.
- C. The hip is proximal to the knee.
- D. The wrist is proximal to the elbow.
Correct answer: C
Rationale: The term 'proximal' refers to a body part being closer to the center of the body or a point of reference. In this case, the hip is closer to the center of the body compared to the knee, which makes the statement anatomically correct. Choice A is incorrect as the knee is proximal to the ankle. Choice B is incorrect as the heart is superior to the diaphragm. Choice D is incorrect as the elbow is proximal to the wrist.
4. How does the circulatory system work with the digestive system?
- A. The circulatory system removes undigested solids from the body.
- B. The circulatory system filters and collects digested materials.
- C. The circulatory system moves absorbed nutrients through the body.
- D. The circulatory system releases enzymes that control digestion.
Correct answer: C
Rationale: The circulatory system works with the digestive system by transporting absorbed nutrients through the body. After digestion occurs in the digestive system, nutrients are absorbed into the bloodstream. The circulatory system then carries these nutrients to cells throughout the body where they are used for energy, growth, and repair. This process ensures that the necessary nutrients are delivered to where they are needed in the body. Choices A, B, and D are incorrect because the circulatory system is not responsible for removing undigested solids, filtering and collecting digested materials, or releasing enzymes that control digestion. These functions are primarily carried out by the digestive system.
5. A person who has damage to their ulnar nerve will have decreased sensation in which part of the body?
- A. Hand
- B. Arm
- C. Leg
- D. Foot
Correct answer: A
Rationale: Corrected Rationale: Damage to the ulnar nerve typically results in decreased sensation in the hand, particularly affecting the little finger and half of the ring finger. The ulnar nerve innervates the hand and is responsible for providing sensation to these areas. This nerve does not extend to the leg or foot, so choices C and D are incorrect. While the ulnar nerve travels through the arm, its primary sensory impact is felt in the hand, making choice B less specific and therefore not the best answer.
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