CONCEPTION Flashcards
Erection is primarily under _______ control
parasympathetic
Male reproduction organs receive dual ANS innervation - ___________ and sympathetic
parasympathetic
__________ activity leads to relaxation of smooth muscle allowing an increase of blood into the organ
parasympathetic
Sympathetic activity leads to normal f_______ state
flaccid
E________ is the emptying of components that make up the semen from the various glands into the repro tract. Emission is a _________process with an increase in activity causing smooth muscle contraction.
Emission
Sympathetic reflex
Emission fills the urethra and provides sensory signal leading to ________
Ejaculation
_______ is the forceful release of semen from the male tact to the exterior environment
Ejaculation
Males contract off the bladder opening to prevent ______ from entering it during ejaculation
sperm
Sperm motility is aided by smooth muscle contraction of m___________ (uterus) and oviduct (Fallopian tube)
myometrium
The oocyte releases ________ to help the sperm identify it
chemicals
Fertilisation require the sperm to breach c__________ radiate and then use ________ enzymes to get across ______ pellucida
Corona
Acrosomal
Zona
The first sperm across the cell membrane causes the membrane _________ and. Changes to __________making it impenetrable (prevents polyspermy)
Polarisation.
zona pellucida
Fertilisation normally occurs in __________
The top third of the Oviduct
How long odes it take from ovulation for fertilised oocyte to enter the uterus
3-4 days
A fertilised egg is called a ?
Zygote
The ________ is the aminotic sac within the blastocyst
blastocoele
In the blastocyst the tropoblastic cells are the ________ part of the _________
Foetal part of the placenta
E_______ pregnancy is when the blastocyst implants in the wrong area
Ectopic
Ovulation > fertilisation > c_______ > morula > blastocyst > implantation
cleavage
The _______ performs function of respiratory, digestive, renal systems and protects the fetus from the mothers immune system
placenta
The human chorionic g__________ (peptide) hormone is produced early and is a hormone of the placenta
gonadotropin
Hormones of. The placenta include
gonadotropin (peptide)
Estrogen and progresterone (steroids)
In later pregnancy the foetus is releasing lots of a______________ hormones
adrenalcortical
High estrogen levels because of adrenalcortical hormones causes an increase in _______ receptors in ________ and stop progesterones ability to stop prostaglandin action
oxytocin
myometrium
Two hormones o___________ (from the foetus itself) makes the placenta produce p________ leads to increase uterine contractions also accentuated by mothers own o_______ from posterior p___________
Oxytocin
Prostaglandins
Oxytocin