Shared Flashcard Set

Details

Biology 124 Workshop
Hormones and Pregnancy
21
Biology
Undergraduate 1
03/06/2013

Additional Biology Flashcards

 


 

Cards

Term

True or False?

Approximately 3 days after fertilisation, the fertilised egg divides for the first time

Definition

False

 

the first division takes place approximately 1 day after fertilisation

Term

True or False?

the inner cells (mass cells) of the developing blastocyst are stem cells and can grown inot any part of the human body

Definition
True they can
Term

True or False?

15 days after fertilisation, the blastocyst arrives in the uterus

Definition

False

this occurs about 7 days after fertilisation

Term

True or False?

In the 3rd week, the neural tube develops

Definition
True it does develop
Term

True or False?

The nerve cells start to form at 8 weeks?

Definition

False

they start to form 15 days after fertilisation

Term

True or False?

After 15 weeks, the placenta takes over from the yolk sac for supplying the developing baby with food, oxygen and water?

Definition

False

this occurs after 8 weeks

Term

True or False?

Alcohol and nicotine can pass via the placenta to the developing baby

Definition
True they can pass. smoking is bad
Term

True or False?

Ultrasound waves are very low frequency waves which pass from the probe through the body

Definition

False

they are very HIGH frequency sound waves

Term

True or False?

The stepping reflex first appears at 16weeks

Definition

False

it appears at 11 weeks

Term

True or False?

The second trimester refers to the middle three months of pregnancy?

Definition

True

 

this does refer to the middle 3 months

Term

 True or False?

At 16 weeks old, the nervous system is working and bones are hardening

Definition

True

 

yup and yup bones are also hardening

Term

True or False?

Feet develop before hands

Definition

False

Hands before feet baby!

Term

True or False?

At 16 weeks old, the heart contractions are under control from the brain and the heart beats at 140-150 beats per minute

Definition
this is astoundingly True!
Term

True or False?

Non identical twins can play with one another in the womb

Definition

False

this only occurs with identical twins. Non identical twins are seperated by a membrane

Term

True or False?

At 18 weeks, the baby starts to urinate into the amniotic fluid

Definition
True gross!
Term

True or False?

24 weeks of development is the earliest that a baby can be born with good chances of survival

Definition

True

babies of 22 weeks gestation can survive but the risks are great

Term

True or False?

At 26 weeks, babies sleeo 90% of the time?

Definition
True sleepy babies
Term

True or False?

 

At 35 weeks memory starts to develop

Definition

False

this occurs sooner at 28 weeks

Term

True or False?

Eyelashes do not grown until the baby is born

Definition

False

they have grown by 25 weeks

Term

True or False?

One of the factors in deciding when labour begins is the maturity of the lungs

Definition

True

mature lungs secrete a protein into the amniotic fluid which inhibits progesterone and stimulates oxytonin release which starts uterine contractions

Term

True or False?

When the cervix has dilated 20cm, it is wide enough for the baby's head to pass through

Definition

False

full dilation of the cervix is at 10cm

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