What is the mechanism called which brings about an increasing change in the same direction?

Correct Answer: B

Rationale: Positive feedback amplifies change (e.g., childbirth contractions), unlike homeostasis (A, stability), negative feedback (C, reversal), or homeothermic (D, temperature). Anatomy highlights this in rare escalating processes, confirming B.

Correct Answer: D

Rationale: The stomach, initiates food breakdown via mechanical churning and secretes gastric juice (acid, enzymes) that kills bacteria. The liver produces bile, heart pumps blood, colon absorbs water, and skin protects. Anatomically, the stomach's acidic environment (pH A.5-C.5) digests and sterilizes, aligning with digestion's start, confirming D.

Correct Answer: A

Rationale: Negative feedback, restores homeostasis by countering deviations e.g., cooling when overheated. Stimulus triggers, sensor detects, positive feedback amplifies (e.g., childbirth), and disease disrupts. Anatomically, negative feedback (thermoregulation) stabilizes variables like temperature, making A the self-correcting mechanism.

Correct Answer: A

Rationale: Superior denotes a position closer to the head, aligning with the cephalic direction in anatomical terms. It's used to compare structures like the eyes being superior to the mouth offering a vertical hierarchy. In clinical practice, nurses apply this to locate issues, such as superior lung infections, ensuring precise communication. It contrasts with tailward or front-back terms, anchoring orientation in the body's upright framework for effective care and study.

Correct Answer: A

Rationale: The heart lies below the clavicle, a correct inferior relationship in anatomical terms. This positioning aids clinicians in chest assessments like heart sounds relative to the collarbone. Other pairings misalign: shoulders are proximal to wrist bones, fingers extend beyond hand bones, and eyes sit between eyebrows. Nurses use such relationships to pinpoint locations, ensuring accurate diagnostics and interventions.