Week 1 Male Reproductive System Flashcards
The Darots and Cremaster muscles contract or relax in an effort to?
Maintain proper temperature for sperm storage and development
Which cells or structures of the testes produce testosterone?
Leydig (Interstitial) cells surround the Seminiferous tubules which secrete testosterone and other androgen hormones.
Which of the following accessory glands do sperm cells pass through while traveling through the male’s system?
Prostate
Seminal Vesicle
Bulbourethral
Prostate
Which of the following accessory glands provides nutrients for the sperm cells as they travel through the male’s reproductive system?
Prostate, Seminal Vesicle or Bulbourethral
Seminal Vesicle - provides fructose for energy
The penis consists of three parallel erectile tissues. Which of the following occurs as a pair of cylindrical, erectile tissue?
corpus cavernosum, corpus spongiosum or Glans Penis
Answer = Corpus Cavernosum
Activation of the sympathetic nerves results in
Ejaculation or Erection?
Ejaculation
What is the responsibility of Sertoli Cells in Spermatogenesis
Sertoli cells secrete signalling molecules that promote sperm production and can control whether sperm cells live or die.
What are Germ cells?
The least of the mature cells.
The spermatogonia line the basement membrane inside the tubule. Spermatagonia are the stem cells of the testis – they can differentiate into a variety of different cell types throughout adulthood.
What is the correct process of Spermatogenesis?
Aka Spermatogonium to Spermatozoa
Spermatogonium -> Mitosis = Spermatagonia A & B
A stays to creates more, B becomes a Primary Spermatocyte -> Meiosis -> creates 2 secondary spermatocytes -> Meiosis 2 -> creates 4 Spermatids which become Spermatoza
Which of the following is the correct sequence regarding the flow of sperm cells in the testes?
a. epididymis, seminiferous tubules, ductus deferens, Prostate, Urethra
b. ductus deferens, urethra, ejaculatory duct epididymis, seminiferous tubules
c. seminiferous tubules, epididymis, ductus deferens, ampulla, ejaculatory duct, urethra
C. Seminiferous Tubules (Spermatogenisis) Epididymis for maturation Ductus Deferens (Vas Deferens) for Ejaculation Ampulla Ejaculatory Duct Urethra
As sperm pass through the Ampulla, they mix with fluid from the Seminal Vessicle.
What does this mix contain?
Fructose for energy
What is purpose of the prostate?
About the size of a walnut, the prostate is formed of both muscular and glandular tissues.
It excretes an alkaline, milky fluid to the passing seminal fluid—now called semen—that is critical to first coagulate and then decoagulate the semen following ejaculation
What is the role of the Bulbourethral Glands?
Secrete a thick, salty fluid that lubricates the Urethra and Vagina, as well as cleaning the urine residue.
Which hypothalamic hormone contributes to the regulation of the male reproductive system?
a. luteinizing hormone
b. gonadotropin-releasing hormone
c. follicle-stimulating hormone
d. androgens
b. gonadotropin-releasing hormone
GnRH tells the Anterior Pituitary to release LH and FSH
LH stimulates Leydig cells = Testosterone production
FSH stimulates Sertoli cells = Androgen-binding protein (keeping testosterone high at the Spermatogonia)
FSH also stimulates Inhibin release –> negatively feedbacks to Hypothalamus to inhibit release of FSH
High testosterone levels also negatively feedback to the Hypothalamus and Pituitary gland to seize GnRH, FHS and LH
What are the 3 phases of male sexual response?
List also if it is a sympathetic or parasympathetic innervation
Erection - PsNS
Emission - SNS (Sperm moves from epi to ejaculatory duct)
Ejaculation - SNS
