1) The hypohyseal portal veins drain the A) Anterior pituitary.............is th
ID: 9371 • Letter: 1
Question
1) The hypohyseal portal veins drain the
A) Anterior pituitary.............is this the correct answer?
B) Posterior pituitary
C) Hypothalamus
D) Thalamus
2) The interstitial cells of the testes are an important target for
A) FSH
B) LH.............is this the correct answer?
C) GnRH
D) Oxytocin
E) Both A and B
3) During spermatogenesis, which of the following undergoes a meiotic division to produce haploid cells?
A) Spermatids
B) Secondary spermatocytes
C) Pimary spermatocytes.............is this the correct answer?
D) Spermatogonia
E) Spermatozoa
4) The normal number of spermatozoa per milliliter of semen is:
A) 50-100
B) Fewer than 20,000,000
C) More than 200,000,000
D) 50,000,000 – 150,000,000.............is this the correct answer?
E) About 5 million
5) A normal mature human spermatozoa contains:
A) 23 chromosomes.............is this the correct answer?
B) 23 pairs of chromosomes
C) 46 chromosomes
D) 46 pairs of chromosomes
6) During the menstrual cycle, LH is at its highest levels
A) During the menstrual phase
B) Just prior to ovulation.............is this the correct answer?
C) Just after ovulation
D) Just before menstruation begins
E) Levels of LH never change
Thank you in advance!
Explanation / Answer
Hello! 1. Anterior Pituitary is correct. The Hypophyseal portal system links the hypothalamus to the anterior pituitary. 2. LH is correct. Also known as Leydig Cells, these are the primary target for LH. When stimulated by LH, they secrete testosterne. 3. Primary Spermatocytes is correct. Primary spermatocytes undergo MEIOSIS to form haploid cells called Secondary Spermatocytes. 4. 50,000,000 – 150,000,000 is correct. 5. 23 chromosomes. This is correct, the mature sperm contains 23 chromosomes (gamete) so that when it meets the egg (also 23 chromosomes) they will make a normal human (46 chromosomes) 6. Just prior to ovulation. Yes, the "Luteal Surge" occurs just preceding ovulation. Well Done! All correct! : )
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