Spermatogesesis Flashcards
How many sperm are produced per day in the human body?
A) 12 million
B) 50 million
C) 120 million
D) 500 million
C) 120 million
Which cells give rise to spermatogonia in the seminiferous tubules?
A) Sertoli cells
B) Germinal epithelial cells
C) Primary spermatocytes
D) Secondary spermatocytes
B) Germinal epithelial cells
What is the final product after two meiotic divisions of primary spermatocytes?
A) Spermatogonia
B) Spermatids
C) Secondary spermatocytes
D) Spermatozoa
B) Spermatids
Where do spermatids mature before being released into the lumen of the seminiferous tubules?
A) In the epididymis
B) In the Sertoli cells’ infoldings
C) In the Leydig cells
D) In the germinal epithelium
B) In the Sertoli cells’ infoldings
What is the total time it takes for the development of sperm from spermatogonia to mature sperm?
A) 24 days
B) 72 days
C) 120 days
D) 90 days
B) 72 days
Sertoli cells stretch from the outer layer of the seminiferous tubule to the lumen and help support developing sperm.
True
False
Answer: True
The seminiferous tubules contain _____ layers of cells, each representing a different stage of sperm development.
6
Sertoli cells play a role in molding the developing sperm into ________.
spermatids
The outer layer of cells in the seminiferous tubule is called the ________ cells.
Germinal epithelial (testes/ ovary)
The two meiotic divisions of primary spermatocytes produce ________ and then spermatids.
Secondary spermatocytes
Spermatids mature inside the ________ cells before being released into the lumen.
Sertoli
List the 3 stages of spermatogenesis
multiplication
growth (size & prepare for 1st meiotic division)
maturation
the cells which undergo mitosis are called ___________
sperm=
egg=
mother cells
spermatocytes
oocytes
