_______ glands secrete mucus, which combines with water for form a thick and sticky product; whereas,_________ glands produce a relatively watery fluid.
Merocrine; holocrine
Endocrine; exocrine
Serous; mucous
Apocrine; mixed
Mucous; serous
The Correct Answer is E
A. Merocrine; holocrine: Merocrine glands secrete their products via exocytosis, and holocrine glands release entire cells, but this distinction does not directly describe mucus versus watery secretions.
B. Endocrine; exocrine: Endocrine glands release hormones into the bloodstream, and exocrine glands secrete onto surfaces or into ducts. This classification does not specify the type of fluid produced, such as mucus or watery secretions.
C. Serous; mucous: Serous glands produce a watery, protein-rich secretion, while mucous glands produce thick, sticky mucus. This reverses the secretion types described.
D. Apocrine; mixed: Apocrine glands release portions of cells along with secretions, and mixed glands can produce both mucus and serous products. While related, this does not Correct answer the distinction between mucus and watery fluids.
E. Mucous; serous: Mucous glands secrete mucus, which combines with water to form a thick, sticky product, whereas serous glands produce a relatively watery, enzyme-rich fluid. This accurately distinguishes the two secretion types.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Merocrine:Merocrine glands secrete their products by exocytosis, where vesicles release substances such as sweat or enzymes without damaging the gland cell. This is the most common method of glandular secretion.
B. Mucous:Mucous glands produce thick, viscous secretions rich in glycoproteins, but the term describes the type of secretion rather than the mechanism. They can still use merocrine exocytosis to release their products.
C. Holocrine:Holocrine glands release their secretion when the entire gland cell ruptures and disintegrates, releasing cell contents along with the secretion. This process is not exocytosis.
D. Endocrine:Endocrine glands release hormones directly into the bloodstream rather than through ducts. They do not use exocytosis of vesicles into ducts, making them different from merocrine glands.
Correct Answer is B
Explanation
A. skeletal MT:Skeletal muscle tissue is striated and voluntary, with long multinucleated fibers. The nuclei are located at the periphery of the cells, making it different from the muscle type described.
B. cardiac MT:Cardiac muscle tissue is striated and involuntary, with cells that usually contain one centrally located nucleus. It also features intercalated discs that allow synchronized contraction, matching the characteristics given.
C. smooth MT:Smooth muscle tissue is involuntary but non-striated. The cells are spindle-shaped with a single central nucleus, so it does not meet the description that includes striations.
D. All types of muscle tissue have these characteristics:Not all muscle types share striations, involuntary control, and a single central nucleus. This description specifically fits cardiac muscle tissue rather than all types.
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