UNIT 12 MALE REPRODUCTIVE Flashcards
(23 cards)
What is the general function of the reproductive systems?
The general function of the reproductive system is to maintain population size and production of sex cell (eggs and sperm).
What are the three regions of the male urethra?
1) prostatic urethra 2) membranous urethra 3) spongy urethra.
Why are the regions of the male urethra named as they are?
They are named because of the type of tissue that surrounds those regions of the male urethra.
What type of general cell division occurs to make sperm cells?
Meiosis.
What is the specific name of the general cell division called when the end result is primary spermatocytes?
Mitosis.
Are spermatocytes mobile?
NO.
Are spermatids mobile?
NO.
Are spermatozoa mobile?
YES, but they achieve full motility after seminal fluid activates them.
What developing sperm cells are haploid?
Secondary spermatocytes, spermatids, spermatozoa, and sperm.
What developing sperm cells are diploid?
Spermatogonia and primary spermatocytes.
What is the pathway of sperm cells from the seminiferous tubules to the male body’s exterior?
Seminiferous tubules -> straight tubules -> rete testis -> efferent ductules -> epididymis -> vas deferens -> ampulla of vas deferens -> ejaculatory duct -> prostatic urethra -> membranous urethra -> spongy urethra -> male body’s exterior.
What is the endocrine pathway that results in the production of sperm cells?
Anterior pituitary secretes follicle stimulating hormone that stimulates sustentacular cells to secrete androgen binding protein. The anterior pituitary also secretes luteinizing hormone that triggers interstitial cells to secrete testosterone.
What is the name of the erectile tissue that makes up the glans penis?
Corpus spongiosum.
What is the function of the secretion from the seminal vesicle?
Seminal vesicle fluid activates sperm motility and sperm’s ability to fertilize female eggs. It also provides nutrients to sperm cells.
What is the function of the secretion from the prostate gland?
Prostatic fluid activates sperm’s ability to fertilize female eggs and provides nutrients to sperm cells.
What is the function of the secretion of the bulbourethral glands?
Bulbourethral fluid neutralizes the spongy urethra that contains the remnants of acidic urine and provides lubrication.
What is contained in semen?
Sperm, seminal fluid, and prostatic fluid.
If a male has a vasectomy, does he still produce sperm cells?
Yes, a male still produces sperm after a vasectomy.
What happens to the sperm cells after a vasectomy?
Sperm is blocked from moving out of the epididymis and is phagocytized by epithelial cells of the epididymis.
What structure of the male reproductive system is modified during a vasectomy?
The vas deferens.
Fill in the blank: The structure that connects the epididymis to the ejaculatory duct is the _______.
vas deferens.
True or False: The seminal vesicle fluid provides nutrients to sperm cells.
True.
Label the part of the male reproductive system: _______.
Corpus cavernosum.
