https://padlet.com/martange/9dc5wr9fkk9me957 en-us 2020-08-05 01:13:32 UTC 2026-02-15 03:33:04 UTC hello@padlet.com martange https://padlet.com/martange/9dc5wr9fkk9me957/wish/669664452 Characteristics of the germinal stage:
-First and shortest stage of the human lifespan
-Starts with fertilisation and ends with implantation in the endometrium of the uterus]]> 2020-08-05 01:19:28 UTC https://padlet.com/martange/9dc5wr9fkk9me957/wish/669664452 martange https://padlet.com/martange/9dc5wr9fkk9me957/wish/669676339 -Fertilisation occurs when a sperm cell combines with an egg cell to form a zygote  
-30 hrs after, the cell divides for the first time 
-after 3 days, the zygote consists of 16 cells and takes on a spherical shape. Now known as the morula
-then the zygote travels down the fallopian tube and into the uterus]]> 2020-08-05 01:33:28 UTC https://padlet.com/martange/9dc5wr9fkk9me957/wish/669676339 martange https://padlet.com/martange/9dc5wr9fkk9me957/wish/670759828 -The ball of cells is now known as a blastocyst. This begins to implant in the endometrium
-the inner cell mass with become the embryo and the outer cell mass with eventually become the placenta
-the formation of the placenta begins ]]> 2020-08-06 00:02:14 UTC https://padlet.com/martange/9dc5wr9fkk9me957/wish/670759828 martange https://padlet.com/martange/9dc5wr9fkk9me957/wish/673762625 Characteristics of the embryonic stage:
-most critical stage of development
-starts with implantation and ends at the eighth week
-characterised by call differentiation (when cells start taking on specialised roles such as heart cells, skin cells and bone cells 

]]> 2020-08-10 01:58:28 UTC https://padlet.com/martange/9dc5wr9fkk9me957/wish/673762625 martange https://padlet.com/martange/9dc5wr9fkk9me957/wish/673771036 -developing baby is referred to as an embryo 
-cells continue to divide rapidly and take on specialised roles ]]> 2020-08-10 02:09:57 UTC https://padlet.com/martange/9dc5wr9fkk9me957/wish/673771036 martange https://padlet.com/martange/9dc5wr9fkk9me957/wish/673771869 -Tissues that will become the brain and spine begin to develop
-Around 3 mm in length, the embryo secretes hormones to maintain the endometrium and to prevent the mother from having a menstrual period ]]> 2020-08-10 02:11:09 UTC https://padlet.com/martange/9dc5wr9fkk9me957/wish/673771869 martange https://padlet.com/martange/9dc5wr9fkk9me957/wish/673773008 -Buds appear on each side of the embryo that become the limbs
-Heart begins to beat
-It will be several weeks until the placenta is fully functional to access oxygen and nutrients from the mother's bloodstream
-Brain cells are being generated at a rate of 100 per minute ]]> 2020-08-10 02:12:52 UTC https://padlet.com/martange/9dc5wr9fkk9me957/wish/673773008 martange https://padlet.com/martange/9dc5wr9fkk9me957/wish/673774599 -Spinal Cord looks like a tail and the head is large in relation to the rest of the body
-Embryo is approximately 1.3cm in length ]]> 2020-08-10 02:15:10 UTC https://padlet.com/martange/9dc5wr9fkk9me957/wish/673774599 martange https://padlet.com/martange/9dc5wr9fkk9me957/wish/673775539 -Blood cells are being made in the liver 
-Facial features such as the eyes and mouth are forming 
-Tiny muscles have formed which allow the embryo to move ]]> 2020-08-10 02:16:18 UTC https://padlet.com/martange/9dc5wr9fkk9me957/wish/673775539 martange https://padlet.com/martange/9dc5wr9fkk9me957/wish/673776521 -Embryo is around 2.5 cm in length 
-Fingers and toes are starting to form
-Brain is now active ]]> 2020-08-10 02:17:30 UTC https://padlet.com/martange/9dc5wr9fkk9me957/wish/673776521 martange https://padlet.com/martange/9dc5wr9fkk9me957/wish/673777141 Characteristics of the foetal stage:
-starts at the ninth week and continues until birth
-unborn baby is known as a 'foetus'
- all organs formed in embryonic stage mature and function in the early stages of the foetal stage
-by 14th week, the placenta is fully formed and functioning ]]> 2020-08-10 02:18:24 UTC https://padlet.com/martange/9dc5wr9fkk9me957/wish/673777141 martange https://padlet.com/martange/9dc5wr9fkk9me957/wish/673800208 -all organs are formed but not functioning yet 
-in week 11, foetus is 7cm 
-teeth begin to form in gums 
-eyelids are fused over the eyes ]]> 2020-08-10 02:48:55 UTC https://padlet.com/martange/9dc5wr9fkk9me957/wish/673800208 martange https://padlet.com/martange/9dc5wr9fkk9me957/wish/673801504 -in week 14, foetus is 14cm
-tongue develops taste buds
-ears are fully functioning and foetus can hear muffled sounds from the outside world 
-the sex can be distinguished via ultrasound ]]> 2020-08-10 02:50:33 UTC https://padlet.com/martange/9dc5wr9fkk9me957/wish/673801504 martange https://padlet.com/martange/9dc5wr9fkk9me957/wish/673802606 -in week 22 foetus is 33cm 
-foetus will swallow regularly but only amniotic fluid 
-eyelids separate into upper and lower lids and the foetus can open and shut its eyes ]]> 2020-08-10 02:52:12 UTC https://padlet.com/martange/9dc5wr9fkk9me957/wish/673802606 martange https://padlet.com/martange/9dc5wr9fkk9me957/wish/673814119 -foetus is around 37 cm and weighs approx. 1 kg 
-fingers and toes grow nails 
-body has grown and its now more in proportion with head size. (will take until childhood to completely catch up)
-in preparation for breathing, production of surfactant begins ]]> 2020-08-10 03:09:06 UTC https://padlet.com/martange/9dc5wr9fkk9me957/wish/673814119 martange https://padlet.com/martange/9dc5wr9fkk9me957/wish/673815790 -foetus spends most of its time asleep
-Eyebrows and eyelashes grow
-fat is laid down under the skin to assist with adjusting to life outside the uterus 
-foetus moves in a strong and coordinated way ]]> 2020-08-10 03:11:24 UTC https://padlet.com/martange/9dc5wr9fkk9me957/wish/673815790 martange https://padlet.com/martange/9dc5wr9fkk9me957/wish/673817886 -Foetus assumes the 'head down' position in preparation for birth
-Lungs develop at a rapid rate during this time
-Foetus is around 50 cm ]]> 2020-08-10 03:14:11 UTC https://padlet.com/martange/9dc5wr9fkk9me957/wish/673817886