Spermatogenesis Flashcards
STAGES OF SPERMATOGENESIS:
- SPERMATOCYTOGENESIS
- SPERMATIDOGENESIS
- SPERMIOGENESIS
consists of a series of mitotic division of spermatogonia ending in production of primary spermatocytes
spermatogcytogenesis
The creation of spermatids from a
primary spermatocytes and eventually secondary spermatocytes after they undergo a series of meiosis
SPERMATIDOGENESIS
It is the differentiation or metamorphosis
stage of spermatids into mature
spermatozoa.
SPERMIOGENESIS
During SPERMIOGENESIS phase, the round spermatids undergo dramatic changes which includes?
formation of acrosomes, condensation and elongation of the nucleus, development of the flagellum or tail and the loss of redundant substances of the cytoplasm and its organelles
SPERMATOGENIC CELLS STAGES:
- SPERMATOGONIUM
- PRIMARY SPERMATOCYTES
- SECONDARY SPERMATOCYTES
- SPERMATIDS
- SPERMATOZOA
The primordial male germ cells that are the precursors of spermatozoa multiply by mitosis to become spermatocytes throughout adult life
SPERMATOGONIUM
The primordial male germ cells that are the precursors of spermatozoa multiply by mitosis to become?
Primary spermatocytes
are what arise after immature germ cells, spermatogonia, go through mitosis.
Primary spermatocytes
They are diploid cells which means that they have two sets of
chromosomes.
Primary spermatocytes
are haploid cells, Smaller than primary spermatocytes, and show coarse chromatin granules and abundant rough endoplasmic reticulum cisternae.
Secondary spermatocytes
Secondary spermatocytes rapidly undergo the
second?
meiotic division.
Is the haploid male sex cell formed after the completion of meiotic divisions, they give rise to the mature spermatozoa after undergoing differentiation
SPERMATIDS
the mature male sex cell capable of fertilizing the ovum characterized by having a compact head a long flagella for swimming
SPERMATOZOA
Becomes replacement cells that provides continuous
production of sperm cells
Spermatogonium
THE SEMINIFEROUS TUBULES located within the?
testis
it is the site the spermatozoa production
SEMINIFEROUS TUBULES
The seminiferous tubules are lined by?
Sertoli and spermatogenic cells arranged in layers
The seminiferous tubules are surrounded by a?
basement membrane consisting of an outer thin parietal epithelium overlying peritubular myoid cells, collagen, and an inner layer of extracellular matrix.
Includes the spermatogonia, primary and secondary spermatocytes, spermatids and spermatozoa.
GERM CELLS or SPERMATOGENIC CELLS
are larger and less numerous that nourishes the developing spermatozoa.
It produces both androgen binding protein and inhibin.
SERTOLI (NURSE) CELLS
are found in the parenchyma of the testes between the seminiferous tubules.
LEYDIG (INTERSTITIAL) CELLS
stimulates Leydig cells to produce testosterone and small quantities of other androgens
Luteinizing hormone
This space contains small blood vessels and interstitial cells or Leydig cells.
interstitial spaces