male reproductive Flashcards
testes produce what(2 answers)
sperm and androgens(male hormones)
gamete
sex cell containing 23 chromosomes(half)
scrotum
a skin-covered, highly pigmented, muscular sack called the scrotum that extends from the body
behind the penis
dartos muscle
makes up the subcutaneous muscle layer of the scrotum. . It continues internally to make up the scrotal septum, a wall that divides the scrotum into two compartments,
two cremaster muscles, where are they and what do they do.
. Descending from the internal oblique muscle of the abdominal wall are the two cremaster muscles, which cover each testis like a muscular net.
they move the testes depending on external temperature to promote heat loss or keep warm.
what are the two out coverings of the testes called, describe them
The tunica vaginalis, derived from peritoneum.
The tunica albuginea, the fibrous capsule of the testis. invaginates to form septa
seminiferous tubules
the site of sperm production.
seminiferous tubules
the site of sperm production.
what is the path of sperm cells
Seminiferous tubules >> Tubulus rectus >> Rete testis >> Efferent ductules >> Epididymis
what is spermatogenesis
The process that begins with spermatogonia and concludes with the production of sperm
describe step of spermatogenisis
spermatogonium divides through mitosis into primary spermatocyte, this divide through meiosis into secondary speratocyte, then divide again into spermatid,
What is the epididymis
coiled tube attached to the testis where newly formed sperm continue to mature as they move through the tubes
for sperm to move through the coils of the epididymis it takes
12 days
ductusdeferens(also called the vas deferens)
Link the testis to the rest of the male reproductive organs
Describe the path of sperm from the testes until it leave the penis
Seminiferous tubules > Epididymis> Vas deferens > ampula > Prostate Gland > Urethra
Seminal vesicle
adds secretions to sperm as it passes through the ampula
Prostate Gland
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 benign prostatic hyperplasia (BPH) and what are it’s effects
abnormal growth of the prostate, it causes contradiction of the urethra. leading to a number of lower urinary tract symptoms, such as a frequent and intense urge to urinate, a weak stream, and a sensation that the bladder has not emptied completely.
Describe the corpus cavernosum
The shaft is composed of three column-like chambers of erectiletissue that span the length of the shaft. Each of the two larger lateral chambers is called acorpus cavernosum(plural =corpora cavernosa). Together, these make up the bulk of the penis.
Describe the corpus spongiosum
can be felt as a raised ridge on the erect penis, is a smaller chamber that surrounds the spongy, or penile, urethra.
describe the glans penis
the end of the penis as a high concentration of nerve endings, resulting in very sensitive skin that influences the likelihood of ejaculation
describe the prepuce(or foreskin).
The skin from the shaft extends down over the glans and forms a collar called the prepuce(or foreskin). The foreskin also contains a dense concentration of nerve endings, and both lubricate and protect the sensitive skin of the glans penis.