HESI A2
HESI A2 Anatomy and Physiology Quizlet 2024 Questions
Question 1 of 5
Which mineral is important for the formation of red blood cells?
Correct Answer: D
Rationale: Copper is crucial for the formation of red blood cells as it is a component of enzymes involved in the production of hemoglobin. Hemoglobin, the protein in red blood cells responsible for transporting oxygen throughout the body, requires copper for its synthesis. A deficiency in copper can result in anemia due to insufficient production of red blood cells. Selenium, calcium, and magnesium do not play a direct role in red blood cell formation, making them incorrect choices for this question.
Question 2 of 5
A tissue examined under the microscope exhibits the following characteristics: cells found on the internal surface of the stomach, no extracellular matrix, cells tall and thin, no blood vessels in the tissue. What type of tissue is this?
Correct Answer: A
Rationale: The correct answer is 'Epithelial.' Epithelial tissue is characterized by cells lining surfaces and cavities, such as the stomach. It does not contain blood vessels, and the cells are tall and thin. The absence of an extracellular matrix is typical of epithelial tissue, making it the most suitable choice in this scenario. Connective tissue, like cartilage and nervous tissue, have different characteristics that do not align with the description provided in the question.
Question 3 of 5
How do the intercostal muscles between the ribs assist with respiration?
Correct Answer: C
Rationale: The intercostal muscles located between the ribs play a crucial role in respiration by aiding in the enlargement and reduction of the space in the thorax. During inspiration, these muscles contract, lifting the rib cage, which increases the volume of the thoracic cavity and allows the lungs to expand and fill with air. This process directly relates to the expansion of the thorax rather than protecting bronchioles and alveoli (
Choice
A), signaling intra-alveolar pressure changes (
Choice
B), or maintaining the separation between pleurae (
Choice
D).
Therefore, the correct answer is C.
Question 4 of 5
How does the integumentary system interact with the nervous system?
Correct Answer: C
Rationale:
Touch input via the integumentary system sends messages to the nervous system. The integumentary system, comprising the skin, hair, and nails, functions as a sensory organ and a protective barrier against external threats. Specialized receptors in the skin detect stimuli like pressure, temperature, and pain, transmitting signals to the nervous system for interpretation. This communication enables the perception of touch and is vital for sensory processes, showcasing the interconnectedness between the integumentary and nervous systems.
Choices A, B, and D are incorrect because the integumentary system primarily interacts with the nervous system through sensory input and communication of stimuli, rather than heat removal, nutrient circulation, or affecting skin color and texture based on nervous system messages.
Question 5 of 5
When the pulmonary valve and aortic valves are open, where can blood flow?
Correct Answer: C
Rationale: When the pulmonary valve and aortic valves are open, blood can flow between the heart and the rest of the body. The pulmonary valve allows blood to flow from the right ventricle to the lungs for oxygenation, while the aortic valve permits blood to flow from the left ventricle to the rest of the body for distribution of oxygen and nutrients. This circulation pathway ensures that oxygen-rich blood is pumped to the body tissues.
Choices A, B, and D are incorrect because when the pulmonary valve and aortic valves are open, blood is not flowing between the ventricles, from atrium to ventricle, or between the atria; instead, it is being pumped out of the heart to the lungs and the rest of the body.