Psychobiology exam #4

SRY

Sex determining Region of Y chromosome. Between 6-7 weeks after conception, this gene codes for testis-determining factor.

SOX9

Regulates activity of various genes important for skeletal development and sex determination, testes formation. Activates genes required for testicular Sertoli cells. T

Sertoli cells

These cells of the testes are essential for testis formation and spermatogensis.

How does an embryo develop into a phenotypic male or female.

During an early stage of prenatal development, both male and female embryos have a set of Müllerian ducts and a set of Wolffian ducts, as well as undifferentiated gonads

Testes

Produce sperm and testosterone.

Leydig cells

Make testosterone (located between seminiferous tubules).

Epididymis

Stores and matures sperm.

Vas deferens

Transports sperm from epidiymis toward the prostate

Seminal vesicles

Produce nutrient-rich fluid (semen) (fructose) for sperm

Prostate gland

Adds fluid that helps sperm mobility and survival.

Urethra

Final tube that carries semen to the outside of the body.

Scrotum

Regulates temperature for healthy sperm production.

Penis (structural)

External structure through which urethra passes