Flashcards in Reproduction Deck (38)
Freshly ejaculated sperm needs to go through a process of change in order to fertilise the ovum. This process is called:
What is the name of the temporary endocrine gland that secretes progesterone?
What best describes the order of cell division of the zygote ?
Zygote - blastomeres - morula- blastocyts
When does ovulation occur?
Just after the LH peak
Monozygotic (identical) twins are caused by two sperm fertilising a single egg. True or False
State five specific functions of the peak in oestrogen concentration during the cycle of the female mammal?
Causes behavioural oestrus 'heat'
Increases and thickens cervical mucus
Stimulates pituitary release of LH
Stimulates retrograde uterine contractions
inhibits follicle growth - promotes follicle atresia
State five specific functions of progesterone during the cycle and during pregnancy of the female mammal
Sensitise the brain to E2
Inhibits the immune activity of the uterus
Suppresses behavioural oestrus
Inhibits follicle growth
Where is the site of spermatogenesis?
What produces androgens?
What does NOT stimulate uterine contractions in a pregnant mother
What duct is not part of the male reproductive system?
Name a gland that is not part of the female reproductive system:
The corpus luteum will develop to form the placenta. True or False
Name the hormone that stimulates the cycling female mammal to be in 'heat'?
During fertilisation the successful sperm penetrates the outer membrane of the ova. This is known as...
What is blastocyst is comprised of..
Trophoblast and the inner cell mass
What is not a mammalian placental type
State two specific functions of FSH during the oestrus cycle
Stimulates growth of ovarian follicles
Stimulates secretion of E2 from Graafian follicles
State two specific functions of LH during the oestrus cycle
Stimulates formation of the CL
State one specific function of PGF during oestrus cycle
What is the name of the temporary endocrine gland that secretes
A cycle is approximately 28 days in duration in regards to the estrous cycle: True or False
Oestrogen inhibits parturition in regards to parturition: True or False
What are the two roles Luteinising hormone
Stimulates the remnants of the burst follicle to form a corpus luteum
What is the role of oxytocin
Stimulate uterine contractions at birth
What is the role of Prostaglandin
What is the role gonadotrophin releasing hormone
Stimulates gonadotrophin release from pituitary
State five roles of Howlers
Stimulate follicle growth in the uterus
Stimulate cervical mucus which increase ovulation
Contraction in urine during childbirth
Leutenise sperm cells
Ejaculation of milk
Whats the function of the zona reaction?