Reproductive System - Fertilisation

Question 1

What are some anatomical changes during pregnancy

Answer 1

• breast enlargement
• increased pigment of skin
• uterine enlargment
• weight gain
• relaxation of pelvic ligaments
• increased pressure on abdominal & pelvic organs
• changed centre of gravity

Question 2

Explain how the breasts prepare for lactation

Answer 2

• 2-3 days after birth milk production begin

- suckling stimulates mechanoreceptors in nipple & triggers release of prolactin

Question 3

what are the 3 stages of labour

Answer 3

1. dialation stage
2. expulsion stage
3. placental stage

Question 4

what is the process of the dilation stage?

Answer 4

• 6-10 hours
• fall in progesterone concentration
• cervical dilation
• fetal head pushes against cervix stimulating sensory endings
• reflex release of oxytocin from posterior pituitary

Question 5

What is the process of expulsion stage?

Answer 5

• 1 hour
• more cervical dilation
• vaginal stretch stimulates contractions of abdominal walls
• periodic contractions increase in frequency 1 every 1-3 minutes

Question 6

What is the process of placental stage?

Answer 6

• 30 minutes
• expulsion of placenta
• myometrical contraction limits bleeding

Question 7

What can cause post partum bleeding

Answer 7

Remaining placenta in the uterus.