ATI RN
Introduction to Anatomy and Physiology Lesson 6.1 Study Questions Questions
Question 1 of 5
A positive feedback process occurs during childbirth. During this process, cervical stretch causes release of the hormone oxytocin to which caused the degree of cervical stretch to
Correct Answer: D
Rationale: In childbirth, cervical stretching triggers oxytocin release, intensifying contractions and further stretching the cervix. This escalating cycle accelerates delivery, a classic amplification process. Nurses monitor this to ensure progression, intervening if it stalls, as it contrasts with stabilizing mechanisms. The hormone surge and stretch reinforce each other, driving labor to completion, highlighting a rare but critical physiological escalation essential for birth.
Question 2 of 5
The ventral cavity comprises all of the following body cavities except the:
Correct Answer: A
Rationale: The ventral cavity (front) includes pleural (B, lungs), thoracic, pelvic, and abdominal , but not spinal (A, dorsal, with cranial). Anatomically, ventral splits into thoracic and abdominopelvic; spinal lies posterior, protecting the cord, making A the exception.
Question 3 of 5
The thoracic cavity is separated from the abdominopelvic cavity by the:
Correct Answer: B
Rationale: The diaphragm separates thoracic (chest) from abdominopelvic cavities, a muscular dome, unlike mediastinum (A, chest divider), abdominal wall, sternum, or nonexistent septum. Anatomically, it regulates breathing, marking cavity boundaries, making E correct.
Question 4 of 5
A lung is located within the:
Correct Answer: B
Rationale: Lungs are in thoracic (chest), pleural (lung-specific), and ventral (anterior) cavities, not mediastinal (A, central), peritoneal (C, abdominal), or pericardial (D, heart). Anatomically, pleural cavities within thoracic (ventral subdivision) encase lungs, aligning with respiratory structure, confirming B.
Question 5 of 5
The nurse is to position a client in standard anatomical position. What is the best description of the standard anatomical position?
Correct Answer: A
Rationale: Standard anatomical position is standing, arms at sides, palms forward (supinated), per option AA. Lying , sitting (C, D) deviate prone or seated alters orientation. Anatomically, this posture standardizes directional terms (e.g., anterior), ensuring consistency in medical descriptions like the heart anterior to the spine making A the best description.