Nursing practice questions with comprehensive rationales
NurseDive Free Nursing Practice Question
Where does an embryo usually attach to its mother?
A. To the lining of the uterine tube
To the lining of the uterine tube: If an embryo attaches to the uterine tube, it results in an ectopic pregnancy, which is not typical or safe.
B. To the myometrium
To the myometrium: The myometrium is the muscular layer of the uterus and is not the usual site of embryo attachment.
C. To the perimetrium
To the perimetrium: The perimetrium is the outermost layer of the uterus and is not involved in embryo implantation. This is incorrect.
D. To the endometrium
To the endometrium: The endometrium is the inner lining of the uterus, where the embryo typically implants and attaches. This is the correct answer.
This question is an excerpt from Nurse Dive's nursing test bank - Anatomy and physiology proctored exam ( hellen fluid college). Take the full exam now
Full Explanation
A. To the lining of the uterine tube: If an embryo attaches to the uterine tube, it results in an ectopic pregnancy, which is not typical or safe.
B. To the myometrium: The myometrium is the muscular layer of the uterus and is not the usual site of embryo attachment.
C. To the perimetrium: The perimetrium is the outermost layer of the uterus and is not involved in embryo implantation. This is incorrect.
D. To the endometrium: The endometrium is the inner lining of the uterus, where the embryo typically implants and attaches. This is the correct answer.
Similar Questions
Out of the 200 million ejaculated sperm, only about _________ reach the vicinity of the egg.
A. 20,000 to 30,000
20,000 to 30,000: This number is too high for the typical number of sperm that reach the vicinity of the egg.
B. 20 to 200
20 to 200: This number is within the range of the actual number of sperm that typically reach the vicinity of the egg.
C. half
Half: This is an exaggerated number, as far fewer than half of the ejaculated sperm reach the vicinity of the egg.
D. 2000 to 3000
2000 to 3000: This number is too high for the typical number of sperm that reach the vicinity of the egg.
Full Explanation
A. 20,000 to 30,000: This number is too high for the typical number of sperm that reach the vicinity of the egg.
B. 20 to 200: This number is within the range of the actual number of sperm that typically reach the vicinity of the egg.
C. Half: This is an exaggerated number, as far fewer than half of the ejaculated sperm reach the vicinity of the egg.
D. 2000 to 3000: This number is too high for the typical number of sperm that reach the vicinity of the egg.
In sexually reproducing species, males produce sperm and females produce eggs.
A. false
B. true
Full Explanation
In sexually reproducing species, the male typically produces sperm (male gametes), and the female produces eggs (female gametes).
At the end of meiosis I there are ___________ whereas at the end of meiosis II there is/are__________
A. two haploid (n) cells; four haploid (n) cells
Two haploid (n) cells; four haploid (n) cells: At the end of meiosis I, the result is two haploid cells, each with half the number of chromosomes of the original cell. At the end of meiosis II, these two haploid cells divide again to form a total of four haploid cells.
B. two diploid (2n) cells; one haploid (n) cell
Two diploid (2n) cells; one haploid (n) cell: This option is incorrect because meiosis I produces two haploid cells, not diploid cells, and meiosis II produces four haploid cells, not one.
C. two diploid (2n) cells; four haploid (n) cells
Two diploid (2n) cells; four haploid (n) cells: This option is incorrect because meiosis I does not produce diploid cells; it produces two haploid cells. At the end of meiosis II, the result is four haploid cells, which is correct, but the description of meiosis I is incorrect.
D. two haploid (n) cells; one diploid (2n) cell
Two haploid (n) cells; one diploid (2n) cell: This is incorrect because meiosis I results in two haploid cells, and meiosis II results in four haploid cells, not one diploid cell.
Full Explanation
A. Two haploid (n) cells; four haploid (n) cells: At the end of meiosis I, the result is two haploid cells, each with half the number of chromosomes of the original cell. At the end of meiosis II, these two haploid cells divide again to form a total of four haploid cells.
B. Two diploid (2n) cells; one haploid (n) cell: This option is incorrect because meiosis I produces two haploid cells, not diploid cells, and meiosis II produces four haploid cells, not one.
C. Two diploid (2n) cells; four haploid (n) cells: This option is incorrect because meiosis I does not produce diploid cells; it produces two haploid cells. At the end of meiosis II, the result is four haploid cells, which is correct, but the description of meiosis I is incorrect.
D. Two haploid (n) cells; one diploid (2n) cell: This is incorrect because meiosis I results in two haploid cells, and meiosis II results in four haploid cells, not one diploid cell.