Embryonic Development - Up To Month 3 Flashcards
What happens from the eight week onwards to the foetus?
2
It grows and refines the structures it has already formed
It does not produce any more organs
What has happened to the foetus (structurally) by the end of the third month?
(4)
The eyes are low in the face and are widely spaced
Bones grow to replace cartilage (ossification)
The nerves and muscles become coordinated - allows for movement
Milk teeth are formed beneath the gums
By the end of the third month, what movement does the foetus have?
(3)
It can move its arms and legs
It can suck its thumb
It can kick
What can the foetus be seen doing with it’s mouth by the end of month three?
It can be seen taking amniotic fluid in and out of its mouth
What bodily functions can the foetus di by month three?
It can urinate and release faeces into the amniotic fluid
By the end of the third month, what particular organs have formed?
The external sex organs have formed which always the gender of the foetus to be seen in scans
Define gestation.
Gestation is the length of time spent in the uterus from fertilisation to birth
How long does gestation last in humans?
9 months
