Where does nutrient absorption primarily take place?
Mouth
Small intestine
Large intestine
Stomach
The Correct Answer is B
a. Mouth: The mouth is primarily responsible for the mechanical breakdown of food and the beginning of starch digestion via salivary amylase, but it is not a major site of nutrient absorption.
b. Small intestine: The small intestine is the primary site for nutrient absorption. The majority of carbohydrates, proteins, fats, vitamins, and minerals are absorbed here through its extensive surface area provided by villi and microvilli.
c. Large intestine: The large intestine primarily absorbs water and electrolytes. It is not a major site for nutrient absorption.
d. Stomach: The stomach is mainly involved in the mechanical and chemical breakdown of food, particularly proteins, but only a small amount of nutrients (e.g., alcohol, some drugs) are absorbed here.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
a. Formation of polar bodies: Formation of polar bodies occurs only in oogenesis, not in spermatogenesis.
b. Meiosis: Correct. Both oogenesis and spermatogenesis involve meiosis, the process of cell division that reduces the chromosome number by half.
c. Development of a Graafian follicle: This is specific to oogenesis. The Graafian follicle is the mature ovarian follicle.
d. Fertilization: Fertilization is the union of sperm and egg, not a process that occurs during the development of either gamete.
Correct Answer is B
Explanation
a: Testes - The testes are located outside the body cavity within the scrotum and are responsible for producing sperm and testosterone.
b. Prostate: The prostate gland is a male reproductive organ located at the neck of the bladder and surrounds the urethra. It plays a role in the production of seminal fluid, which nourishes and transports sperm.
c: Rugae - Rugae are folds in the mucous membrane lining the urinary bladder that allow it to stretch as it fills with urine; they do not surround the urethra.
d: Bulbourethral - The bulbourethral glands (Cowper's glands) are pea-sized glands located below the prostate gland that secrete a clear fluid into the urethra during sexual arousal, but they do not surround the urethra at the neck of the bladder.
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