Hormone Control
What is LH in terms of the male?
What is the hormone that acts on Leydig cells to stimulate testosterone production.
What is the proliferation phase?
What is the phase consists of all mitotic divisions of spermatogonia.
The sperm head contains these three major structures.
What are the nucleus, acrosome, and postnuclear cap?
This phase forms the acrosomic vesicle.
What is the Golgi phase?
What is the wave?
What is the term describes the sequential ordering of stages along the seminiferous tubule.
What are Sertoli cells?
What is the cells are considered the male equivalent of granulosa cells and depend on FSH.
What are spermatids?
What is the meiotic phase produces these haploid cells.
This structure covers the anterior two-thirds of the nucleus.
What is the acrosome?
During this phase, the spermatid elongates and the acrosome covers most of the anterior nucleus.
What is the acrosomal phase?
Because each tubule is in a different stage, this event occurs at different locations along the tubule.
What is spermiation?
Testosterone concentrations inside the testes are approximately this many times higher than in blood.
What is 100-500 times higher?
What is meiosis?
What is the process creates genetic diversity through crossing over and random assortment.
This part of the sperm contains the mitochondrial helix.
What is the middle piece?
During this phase, the acrosomic vesicle spreads over the nucleus.
What is the cap phase?
The wave ensures this outcome for the epididymis.
What is a fairly constant supply of spermatozoa?
This Sertoli cell hormone suppresses FSH secretion.
What is inhibin?
No further cell divisions occur during this phase of spermatogenesis.
What is the differentiation phase?
The axoneme forms the core of this sperm structure.
What is the flagellum/tail?
What is the maturation phase?
What is the mitochondria migrate and form a spiral around the middle piece.
These structures connect developing germ cells and allow synchronized development of a cohort.
What are cytoplasmic bridges?
What is refractory/desensitized?
What is the continuous administration of LH would impair testicular function because Leydig cells become this.
How long does the complete process of spermatogenesis typically take in the bull?
What is 60-61 days?
This centriole gives rise to the axoneme during differentiation.
What is the distal centriole?
This event is the release of spermatids from the wall of the seminiferous tubules into the lumen.
What is spermiation?
After fertilization, reversal of this process allows the sperm nucleus to decondense within the oocyte.
What is chromatin condensation/keratinization stabilized by disulfide bonds?