The nurse is reviewing with a young couple about the divisions of a sperm cell. What is the best explanation by the nurse of the purpose of the body of the sperm?
A) Contains 23 chromosomes
B) Contains enzymes that can dissolve the tough cell wall of the ovum
C) Provides the energy necessary for locomotion
D) Propels the sperm with a lashing motion
C
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Sperm cells are highly specialized and are made up of several divisions. The body (middle piece) contains mitochondria, which provide the energy necessary for locomotion. The head contains 23 chromosomes (half of the human genetic material). The tip of the head, the acrosome, contains enzymes that can dissolve the tough cell wall of the ovum (the female sex cell). The whip-like tail is a flagellum that propels the sperm with a lashing motion.
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An adolescent complains of abdominal pain with diarrhea and bloody stools. The nurse should recognize these as symptoms of which inflammatory bowel disease?
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The nurse is preparing to irrigate a client's single-barrel colostomy after surgery. What postoperative day should the nurse irrigate the colostomy?
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A pediatric nurse is teaching nursing students to calculate medication doses for children using a formula based on body surface area. Which statement by a nursing student indicates understand-ing of the teaching?
a. "This formula helps approximate the first dose; other doses should be based on clinical observations." b. "This formula accounts for pharmacoki-netic factors that are different in children." c. "Using this formula will prevent side ef-fects of medications in children." d. "This formula can determine medication dosing for a child of any age."