AOS1 Flashcards
define fertilisation
The process of an egg and sperm fusing together to form a zygote
define conception
The moment one becomes pregnant, and occurs as soon as an egg is fertilised by the sperm
define zygote
The fused cell that forms after the fertilisation process
define fertility
The quality of being fertile and able to conceive
define infertility
The inability to conceive despite having unprotected sex for over 12 months during a female’s fertile window
define placenta
An organ that connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination and gas exchange via mother’s blood supply
explain germinal stage
Zygote divides as it travels down fallopian tubes, when it reaches the uterus, blastocyst implants itself in the endometrium it becomes the embryo. Cells of the embryo produce HCG which interrupts menstural cycle, preventing embryo from being lost, pregnancy test identifies
explain embryonic stage
Blood vessels grow and form the placenta
Greatest structural development occurs (organs form)
Embryo is vulnerable to environmental factors (smoking, drugs)
explain foetal stage
Spinal cord and neurons form, synapses develop
Lungs filled with amniotic fluid
Hearing Is developed
Vital organs are fully developed
define primary sex characteristics
Present at birth and relate directly to an individual’s reproductive organs (eg. ovaries)
define secondary sex characteristics
Develop during puberty and do not relate directly to an individual’s reproductive organ (eg. breasts)
list the protective factors of pregnancy
maternal diet, access to healthcare, high prenatal SES
list the risk factors of pregnancy
poor maternal diet, smoking, drug and alcohol use, environmental toxins, age
explain the physical development of an infant
external growth, internal growth, motor skills development, senses continue to develop
explain the intellectual development of an infant
learning, language and speech, creativity and imagination, increased attention span