ATI RN
Chapter 1 An Introduction to Anatomy and Physiology Review Questions Questions
Question 1 of 5
A group of cells with a common structure and function is an example of an?
Correct Answer: B
Rationale: A collection of cells sharing form and purpose like muscle cells contracting defines the tissue level. This tier, above organelles and below organs, organizes the body's functional units. Nurses assess tissues like epithelial damage in burns knowing their collective role drives system performance. This structural unity shapes health, bridging cellular and organ complexity for effective physiological outcomes.
Question 2 of 5
Which is positioned retroperitoneally?
Correct Answer: B
Rationale: Retroperitoneal means behind the peritoneum; kidneys are here, unlike stomach, appendix, and liver (E, intraperitoneal), or heart (C, thoracic). Anatomically, kidneys' posterior placement aids filtration, secured against the back wall, making B correct.
Question 3 of 5
Which serous membrane would be cut first as a physician removes an infected appendix?
Correct Answer: A
Rationale: The parietal peritoneum lines the abdominal wall, cut first in appendectomy, unlike dorsal mesentery (B, organ support), visceral pleura, or parietal pleura (D, thoracic). Anatomically, it's the outer layer accessed surgically, making A correct.
Question 4 of 5
In a negative feedback system:
Correct Answer: C
Rationale: Negative feedback loops output back to adjust input (e.g., thermostat), stabilizing conditions, unlike constant input, useless input, or constant output. Anatomically, this regulates temperature sweat cools maintaining homeostasis, confirming C.
Question 5 of 5
When considering the fluid replacement needs of an adult, the nurse recalls that approximately what percent of an adult's body is composed of water?
Correct Answer: D
Rationale: Adults are ~60% water , per options A9-BB, varying by age/sex (50-65%). Not B5% , CC% , or 50% too low for physiological needs. Anatomically, water fills intracellular (cells) and extracellular (blood, interstitial) spaces, supporting metabolism and homeostasis (e.g., nutrient transport). This high percentage guides fluid therapy, confirming D.