Which statement accurately characterizes the primary role of the human reproductive system?
It coordinates sensory perception and integration.
It synthesizes hormones for energy metabolism.
It ensures the continuation of the species.
It regulates fluid balance within the body.
The Correct Answer is C
A. It coordinates sensory perception and integration: That is the primary role of the nervous system (sensory integration, not reproduction).
B. It synthesizes hormones for energy metabolism: Endocrine organs (e.g., thyroid, pancreas) are chiefly responsible for metabolic hormone synthesis; while reproductive organs produce sex hormones, their primary system role is reproduction.
C. It ensures the continuation of the species: The main biological function of the reproductive system is to produce gametes and enable fertilization and development, ensuring species propagation.
D. It regulates fluid balance within the body: Fluid/electrolyte balance is primarily regulated by the renal and endocrine systems (kidneys, ADH, aldosterone).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Pancreas:Most of the pancreas (head, neck, body) lies retroperitoneal (except the tail which may be intraperitoneal).
B. Stomach:The stomach is intraperitoneal (suspended by mesenteries).
C. Liver:The liver is intraperitoneal (covered by visceral peritoneum except at bare area).
D. Spleen:The spleen is intraperitoneal and suspended by ligaments (not retroperitoneal).
Correct Answer is B
Explanation
A. CCK is released from the duodenum to promote liver and pancreatic secretion.:CCK (cholecystokinin) is released by duodenal/jejunal enteroendocrine cells and stimulates pancreatic enzyme secretion and gallbladder contraction -this supports digestion but describes a hormonal control mechanism rather than a structural adaptation of the small intestine itself.
B. Large surface area due to the presence of the plicae circulares, villi, and microvilli.:The small intestine’s mucosal folds (plicae circulares), finger-like villi, and microscopic microvilli (brush border) massively increase surface area for absorption.
C. Acid secretions from the stomach are neutralized in the duodenum.:The duodenum receives bicarbonate-rich pancreatic secretions and bile which neutralize gastric acid to create an optimal pH for intestinal enzymes -this is an important functional adaptation that facilitates digestion/absorption but is secondary to the structural surface-area adaptations.
D. The small intestine has haustra and rugae both help in nutrient absorption.:Haustra are sacculations of the large intestine (colon) and rugae are folds in the stomach -neither are features of the small intestine, so this statement is incorrect.
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