Which of the following solutions would keep the cell size the same?
An isotonic solution
hypotonic solution
hydrostatic solution
hypertonic solution
The Correct Answer is A
A. An isotonic solution: Has the same solute concentration as the cell interior, so water movement is balanced and the cell size remains unchanged.
B. Hypotonic solution: Has lower solute concentration outside the cell, so water enters the cell, causing swelling or lysis.
C. Hydrostatic solution: Refers to fluid pressure exerted by a liquid, not osmotic balance related to cell size.
D. Hypertonic solution: Has higher solute concentration outside the cell, so water leaves the cell, causing shrinkage (crenation).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Fundus: The rounded top portion of the uterus, located opposite the cervix, not the connection to the vagina.
B. Fallopian tube: Connects to the uterus at the uterine horns and transports ova; it is not the part that opens into the vagina.
C. Body: The main central portion of the uterus (corpus) situated between the fundus and cervix; it does not directly open into the vagina.
D. Cervix: The lower uterine segment that projects into the vaginal canal and forms the direct connection between the uterus and vagina.
Correct Answer is D
Explanation
A. Luteinizing Hormone (LH): LH triggers ovulation and supports the corpus luteum, but it is not the primary hormone that stimulates uterine contractions during labor.
B. Follicle Stimulating Hormone (FSH): FSH promotes follicle development in the ovary during the menstrual cycle, not uterine contractions.
C. Aldosterone: A mineralocorticoid that regulates sodium and potassium balance in the kidneys; it does not induce uterine contractions.
D. Oxytocin: Released from the posterior pituitary and from the uterus, oxytocin stimulates rhythmic uterine smooth muscle contractions during labor.
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