Chapter 28: The Reproductive System Flashcards
FUNCTIONS OF MALE REPRODUCTIVE SYSTEM
- The testes produce sperm and the male sex
hormone testosterone.. - The ducts transport, store, and assist in maturation
of sperm. - The accessory sex glands secrete most of the liquid
portion of semen. - The penis contains the urethra, a passageway for
ejaculation of semen and excretion of urine.
The supporting structure for the testes
SCROTUM
Scrotum: Externally: separated by
median range, raphe
Scrotum: Internally: separated by,
scrotal septum.
– contraction of
cremaster muscle; ipsilateral contraction.
Cremaster Reflex
– testis towards the body (cold)
(move upward)
Contract –
move away from the body (hot)
Relax
testicles
are paired oval glands in the scrotum
TESTES
how sperms are made.
SPERMATOGENESIS
(stem cells)
Spermatogonium
– diploid (2n)
Primary Spermatocyte
formed by
meiosis I. No replication of DNA.
Secondary Spermatocyte
four haploid from meiosis II
Spermatids
acrosome and tail
appears, become sperm
Spermiogenesis
1 spermatocyte = __ spermatids
4
The male reproductive cell, or gamete
SPERM -
ducts store and transport
most of the sperm cell.
Ducts of the Testis
provide fructose
for ATP production by sperm, contribute to sperm
motility and viability, help semen coagulate after
ejaculation.
SEMINAL VESICLES –
– secrete milky fluid that
contains enzymes, breaks down clotting proteins
PROSTATE
secrete alkaline
substance that lubricates the lining of urethra and
tip of the penis during sexual intercourse.
BULBOURETHRAL GLANDS
(COWPER’S GLAND) –
– (seed) mixture of sperm and seminal
fluid
SEMEN
- transport medium, protects
semen from acidic environment in the male urethra
and female vagina.
SEMINAL FLUID
Contains urethra
Passageway of semen and urine
Cylindrical in shape
PENIS
– fibrous tissue
. Tunica Albuginea
– “main bodies” “hollow”
Corpora cavernosa Penis –