lab 19

secondary oocyte.

The larger cell, which contains nearly all the cytoplasm of the primary oocyte, is the

spermatogonia

The outermost tubule cells are stem cells called

spermatids.

The secondary spermatocytes continue on rapidly into meiosis II, and their daughter cells are called

primary spermatocyte

The type B cell gets pushed toward the lumen of the tubule, where it becomes a primary --- destined to produce 4 sperm.

2n

primary oocyte primary spermatocyte

secondary oocyte

product of oogenesis released in ovulation

n

secondary oocyte secondary spermatocyte spermatid spermatozoa polar bodies ovum

secondary spermatocytes.

Each primary spermatocyte generated during the first phase undergoes meiosis I, forming two smaller haploid cells called

oogenesis.

Meiosis, the specialized nuclear division that occurs in the testes to produce sperm, also occurs in the ovaries. 2. In this case, female sex cells are produced, and the process is called

primary oocytes

are activated each month in response to the LH surge midcycle.

Spermatogenesis

begins during puberty, and from then on, each mitotic division of a spermatogonium results in two distinctive daughter cells - types A and B.

spermiogenesis,

during which it elongates, sheds its excess cytoplasmic baggage, and forms a tail.

sperm

necessary for completion of oogenesis

fetal period

oogenesis begins

oogonia

the diploid stem cells of the ovaries