Spermatogenesis Flashcards
The tunica vaginalis is __________ to the tunica albuginea.
superficial
The ____________ is divided into the parietal, cavity, and visceral sections.
tunica vaginalis
The ____________ have tight junctions.
Sertoli
_____________ cells secrete anti-Müllerian hormone.
Sertoli
Going from the outside to the inside of a seminiferous tubule, what will you pass through?
Basement membrane Spermatogonia Sertoli cell Spermatocyte Spermatid Sperm
Spermatogenesis can be divided into three stages: ________________.
- proliferative
- meiotic (producing spermatids)
- spermiogenesis (producing sperm)
Which type of spermatogonia is self-regenerating?
Type Ad (on the periphery of the tubule, near the basement membrane)
Trace the number of chromosome sets in developing sperm.
Spermatogonium: one cell; 2n (Mitosis) Primary spermatocyte: one cell; 4n (Meiosis I) Secondary spermatocyte: two cells; 2n (Meiosis II) Spermatid: four cells; 1n (Spermiogenesis) Sperm: four cells; 1n
Meiosis I goes from ______________ to _____________.
primary spermatocytes; secondary spermatocytes
The tip of sperm is called ______________.
the acrosome
The acrosome develops toward the _______________.
Golgi apparatus
The mitochondria in sperm are located in _______________.
the midpiece
Anatomists divide the epididymis into three sections. What function does each serve?
Head: sperm concentration
Body: sperm maturation
Tail: sperm storage
How long does the entire process of sperm maturation take place?
From spermatogonia to mature sperm is 64 days.
Testosterone is concentrated within ____________.
Sertoli cells
What is the average volume of an adult testis?
20 mL
What are the two kinds of spermatogonia?
Type Ad, which are proliferative cells, and type Ap, which can progress to spermatocytes
What organelle gives rise to the acrosome?
The Golgi body
The neckpiece of the mature sperm is made of _____________.
centriole
