Reproductive anatomy Flashcards
Smooth muscle fibers in the subcutaneous tissue, the _______ contract to give the scrotum its wrinkled appearance.
dartos muscle
the _______ controls the position of the scrotum and testes. When it is cold or a man is sexually aroused, this muscle contracts to pull the testes closer to the
cremaster muscle
Mature sperm are stored in the ______
lower portion, or tail, of the epididymis
Spermatic cord contains
Proximal ductus deferens testicular artery and veins lymph vessels testicular nerve cremaster muscle connective tissue covering
a fibromuscular tube that is continuous with the epididymis.
Vas / Ductus Deferens
Vas Deferens enters the abdominopelvic cavity through the ______ and passes along the lateral pelvic wall, behind _____ & toward the ______
inguinal canal
bladder
prostate gland.
glands posterior to the urinary bladder.
Seminal vesicle
seminal fluid
viscous, contains fructose prostaglandins (mobility, viability) and proteins (slight coagulation rxn in semen)
Sperm counts _____ can present fertility problems.
< 10 to 20 million/ ml
There are between ______ of semen.
50 to 150 million sperm per milliliter
two dorsal columns = _______
single, ventral column surrounding the urethra = ______
corpora cavernosa
corpus spongiosum
Hormone that stimulates spermatogenesis
FSH
Hormone that stimulates production of testosterone
LH
stimulates the development of male secondary sex characteristics & spermatogenesis.
Testosterone
Interspersed within the tubules are large cells which are the ________ which support and nourish the other cells.
sustentacular cells (Sertoli’s cells),
Each primary spermatocyte goes through meiosis I to produce _____
two secondary spermatocytes, each with 23 chromosomes (haploid).
In the second meiotic division, meiosis II, each secondary spermatocyte divides to produce______
two spermatids.
As a result of the two meiotic divisions, each primary spermatocyte produces ______
four spermatids, each with 23 chromosomes (haploid)– one from each pair in the original primary spermatocyte.
how long after the time of a vasectomy does a man become officially “infertile”?
at least 30 days, maybe more
The entire process, beginning with a primary spermatocyte, takes about _____ After ejaculation, the sperm can live for about ______ in the female reproductive tract.
74 days.
48+ hours
Onset of female breast development
Thelarche
Growth spurt / change in height. onset of androgen-dependent body changes such as growth of axillary and pubic hair, body odor, and acne - begins up to 6 years before puberty
Adrenarche
Appearance of pubic hair
Pubarche
Puberty is essentially related to changes in what hormone
GnRH (hypothalamus)
The hallmark of adrenarche is the
“growth spurt”– increased height.
Hormone which regulates appetite and metabolism through the hypothalmus. It has a permissive role in regulating the timing of puberty.
Leptin
Order of the “-arches’s”
Adrenarche
Thelarche
Pubarche
Menarche
Early development of subareolar breast bud
small amounts of pubic and axillary hair
Tanner 2
Increase in size of palpable breast tissue and areolae
Increased dark curled pubic/axillary hair
Tanner 3
Breast tissue and areolae protrude above breast level.
Adult pubic hair but no spread to medial thighs.
Tanner 4
Mature adult breast
Pubic hair extends to upper thigh
Tanner 5
First ovulation usually occurs ____ months after menarche
6 – 9
Bladder is ______ to the uterus
anterior
Order of fallopian tubes, from opening at ovary to uterus
Fimbriae Infundibulum Ampulla Isthmus Pars Uterina
