HESI A2
HESI A2 Anatomy and Physiology Quizlet 2024
1. What is the meaning of endocytosis?
- A. The cell engulfs solid particles.
- B. The cell engulfs liquid material.
- C. The cell expels solid particles.
- D. The cell releases liquid material.
Correct answer: A
Rationale: Endocytosis is a cellular process where the cell engulfs and internalizes solid particles by forming vesicles. It is a mechanism used for nutrient uptake, cell signaling, and maintaining cellular homeostasis. Options B, C, and D describe processes that are opposite to endocytosis. Choice B is incorrect because it describes pinocytosis, which is the process of engulfing liquid material. Choice C is incorrect as it describes exocytosis, the process of expelling material from the cell. Choice D is incorrect as it describes the process of releasing liquid material from the cell. Therefore, the correct answer is A.
2. Which lobe of the brain is primarily responsible for processing sensory information related to touch, temperature, and body position?
- A. Frontal lobe
- B. Parietal lobe
- C. Occipital lobe
- D. Temporal lobe
Correct answer: B
Rationale: The parietal lobe is primarily responsible for processing sensory information related to touch, temperature, and body position. It plays a crucial role in interpreting sensations from different parts of the body, including proprioception, which is the awareness of body position. The frontal lobe is more associated with functions like decision-making and personality, the occipital lobe is primarily involved in visual processing, and the temporal lobe is responsible for auditory processing and memory. Therefore, the parietal lobe is the correct answer for this question.
3. In the human body, the ribs are ___________ to the lungs.
- A. medial
- B. superior
- C. anterior
- D. deep
Correct answer: C
Rationale: The correct answer is 'C: anterior.' The term 'anterior' refers to a position in front of or toward the front of the body. In this case, the ribs are positioned in front of the lungs when considering the anatomical position. The term 'medial' means toward the midline of the body, 'superior' means above or higher in position, and 'deep' refers to a position farther from the surface or external part. Therefore, the most appropriate choice is 'anterior' when describing the relationship between the ribs and the lungs.
4. What structures are likely torn in a rotator cuff tear?
- A. Tendon and possibly ligament
- B. Muscle and possibly tendon
- C. Ligament and possibly muscle
- D. Tendon only
Correct answer: A
Rationale: In a rotator cuff tear, the most common structures torn are the tendons of the rotator cuff muscles. In severe cases, the tear may also extend to involve the surrounding ligaments. Therefore, the correct answer is A, as it accurately represents the structures that are likely to be affected in a rotator cuff tear. Choice B is incorrect as muscles are not typically torn in a rotator cuff tear. Choice C is also incorrect as ligaments are not the primary structures involved in a rotator cuff tear. Choice D is incorrect because a rotator cuff tear typically involves more than just the tendons.
5. Which part of the nervous system includes the femoral, radial, and ulnar nerves?
- A. Somatic
- B. Autonomic
- C. Sympathetic
- D. Parasympathetic
Correct answer: A
Rationale: The correct answer is A: Somatic. The femoral, radial, and ulnar nerves are all part of the somatic nervous system, responsible for controlling voluntary movements and sensory input. These nerves innervate muscles and skin throughout the body, allowing conscious control of movements and sensations. The somatic nervous system is distinct from the autonomic nervous system, which regulates involuntary bodily functions. Choices B, C, and D are incorrect because the autonomic nervous system (B) is responsible for involuntary functions, while the sympathetic (C) and parasympathetic (D) divisions are subdivisions of the autonomic nervous system, not the somatic nervous system.
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