Define the Following Male Reproductive System Anatomy Flashcards

Ch 27 saladin text male anatomy zoology 142

43 cards   |   Total Attempts: 188
  

Cards In This Set

Front Back
Gonads begin to develop
5 to 6 weeks after fertilization.
The gene that codes for the testis-determining factor (TDF) is found in or on
The Y chromosome.
The penis is homologous to
The clitoris
The _____________ is the gonad and the ___________ is the gamete.
Testis; sperm
________________ stimulates the descent of the testes.
Testosterone
What structure located near the bulb of the inner end of the penis of the male reproductive tract, produces a clear lubricating fluid that also neutralizes the pH of the urine in the urethra?
Bulbourethral gland
What structure surrounds the urethra and ejaculatory duct of the male reproductive tract, is about 3 cm in diameter, contains 30-50 tubuloacinar glands, and is enclosed in a single fibrous capsule?
Prostate gland
What structure of the male reproductive tract consists of a muscular tube, about 2.5 mm in diameter, that extends from the testes up through the spermatic cord, and eventually merges with the duct of the seminal vesicles?
Ductus (vas) deferens
What single erectile body passes along the ventral side of the penis, surrounds the urethra, and expands at the distal end to fill the glans of the penis?
Corpus spongiosum
From their formation to ejaculation, sperm cells take the following pathway:
Seminiferous tubule, rete testis, epididymis, ductus deferens, ejaculatory duct, urethra.
When it is cold, the _____________ contracts and draws the testes closer to the body to keep them warm.
Cremaster muscle
The countercurrent heat exchanger that prevents arterial blood from overheating the testes is
The pampiniform plexus.
The blood-testis barrier
Prevents antibodies in the blood from getting to the germ cells
By volume, most of the semen is produced in the
Seminal vesicles.
_____________ are found in the seminiferous tubules.
Interstitial (Leydig) Cells, Germ Cells, Sustentacular (Sertoli) Cells, Spermatids