Term
| some unique features of the avian male reproductive system |
|
Definition
| Paired testes, Poorly developed epididymis, Ductus deferens, Rudimentary phallus |
|
|
Term
| the accessory glands in humans that are absent in the bird |
|
Definition
| seminal vesicles, prostate and Cowper’s gland |
|
|
Term
| the purpose of the accessory glands? |
|
Definition
| add fluids to sperm to form semen |
|
|
Term
| The testes has a mass of ____% if of the chicken’s body mass. Is this more or less than man? |
|
Definition
|
|
Term
|
Definition
| they produce testosterone and sperm |
|
|
Term
| the role of the vas deferens (ductus deferens) in birds |
|
Definition
| store sperm and transport sperm to cloaca for ejaculation |
|
|
Term
| depiction of the hypothalamus-pitutiary-testicular axis and the different hormones that are released |
|
Definition
|
|
Term
| the role of the epididymis in humans |
|
Definition
|
|
Term
| how the role of the epididymis is different in birds |
|
Definition
| the epididymis in humans stores sperm, but birds have a poorly developed epididymis, so they use the vas deferens to store sperm |
|
|
Term
|
Definition
| when the vas deferens is snipped |
|
|
Term
| the two different cells in the testes |
|
Definition
-Leydig cells
-Sertoli cells (nurse cells) |
|
|
Term
| the receptors on Leydig cells |
|
Definition
|
|
Term
| the receptors on Sertoli (nurse) cells |
|
Definition
| FSH and testosterone receptors |
|
|
Term
| the function of Leydig cells |
|
Definition
| Responsible for testicular androgen production |
|
|
Term
| the function of Sertoli (nurse) cells |
|
Definition
-Sperm maturation – crypts
-Provide nutrients and the optimal environmental, consume damaged sperm
-Produce “Inhibin” that block the release of FSH when enough sperm is produced |
|
|
Term
|
Definition
| Maturation to functional sperm |
|
|
Term
| What is significant about the presence of spermatogonia in males? |
|
Definition
| this is the male stem cell, enabling a man to produce sperm the rest of his life |
|
|
Term
| how long is spermatogenesis in birds? |
|
Definition
|
|
Term
| how long is spermatogenesis in humans? |
|
Definition
|
|
Term
| How many chromosomes are in a chicken spermatogonia? |
|
Definition
|
|
Term
| How many chromosomes are in a chicken spermatozoa? |
|
Definition
|
|
Term
| How many spermatozoa come from one spermatogonia? |
|
Definition
|
|
Term
|
Definition
Morphological changes, such as...
-Spermatid to spermatozoa
-Formation of the acrosome cap and tail |
|
|
Term
| depiction of a chicken sperm |
|
Definition
[image]
where it says nucleus, it should say pronucleus |
|
|
Term
which part of the chicken sperm is number 1?
[image] |
|
Definition
|
|
Term
which part of the chicken sperm is number 2?
[image] |
|
Definition
|
|
Term
which part of the chicken sperm is number 3?
[image] |
|
Definition
|
|
Term
which part of the chicken sperm is number 4?
[image] |
|
Definition
|
|
Term
which part of the chicken sperm is number 5?
[image] |
|
Definition
|
|
Term
which part of the chicken sperm is number 6?
[image] |
|
Definition
|
|
Term
| why the nucleus in sperm is instead a pronucleus |
|
Definition
| because it doesn’t have a full set of chromosomes |
|
|
Term
| the purpose of the acrosome |
|
Definition
| enzyme to break down the innerperivitteline layer (IPVL) or the the zona pollusa, which is the coat around the ovulated egg that the sperm has to get thru to fertilize the egg |
|
|
Term
| some characteristics of sperm storage in rooster |
|
Definition
-Ductus deferens
+20-30 days in not actively mating
+1-3 days in sexually
-Sperm Storage Tubules (female)
+average of 10-14 days
-Not androgen dependent in male tract or testes |
|
|
Term
| some characteristics of sperm storage in mammal |
|
Definition
-Testes and epididymis
-Duration - 60 days (bull)
-Storage is androgen dependent |
|
|
Term
| some characteristics of sperm maturation in rooster |
|
Definition
-Fully mature when leave testis
+Can fertilize eggs
+Not motile
-Motility gained in ductus deferens
+Androgen dependent |
|
|
Term
| some characteristics of sperm maturation in mammal |
|
Definition
-Immature when leave testis
-Mature in epididymis
+Can fertilize eggs
+Motile
-Storage and motility are androgen dependent
-Require capacitation |
|
|
Term
|
Definition
| Capacitation is a functional maturation of the spermatozoon. The changes take place via the sperm cell membrane in which it may be that receptors are made available through the removal of a glycoprotein layer. The area of the acrosomal cap is also so altered thereby that the acrosome reaction becomes possible. |
|
|
Term
| When do rooster sperm gain motility? |
|
Definition
| when they're in the ductus deferens |
|
|
Term
| Is mammalian or avian sperm more concentrated? |
|
Definition
|
|
Term
| Why do you think avian sperm is more concentrated than mammalian? |
|
Definition
| such a rudimentary phallus that it makes sense that the sperm be concentrated when they do the cloacal kiss so that hopefully some of the sperm reach the egg |
|
|
Term
|
Definition
| male’s abdomen palpated to release semen thru cloaca and the semen gets inserted into the female’s vagina |
|
|
Term
| Where in poultry production is AI used? |
|
Definition
|
|
Term
|
Definition
| better control of the population genetics |
|
|
Term
|
Definition
|
|
