The Placenta - anatomy and functions

Question 1

Maternal blood pools via open ended arterioles into ___________________ within the placenta called lacunae

Answer 1

Intervillous spaces

Question 2

What is the function of the placenta? 4)

Answer 2

Nutrition, respiration, protection, excretion

Question 3

How is the placenta formed in terms of embryology? 2)

Answer 3

The blastocyst penetrates the endometrium causing a trophoblastic invasion.

Question 4

How many veins and arteries make up the placenta? 1)

Answer 4

2 arteries and 1 vein

Question 5

What do we check when the placenta is delivered? 6)

Answer 5

Shape, size, texture, cord, membranes, completion

Question 6

What is the percentage of placental abruption occurrences? 1)

Answer 6

1%

Question 7

What are the signs of a placental abruption? 3)

Answer 7

Bleeding, hard abdomen, backache, low fetal heart rate, discomfort

Question 8

What is a concealed abruption? 2)

Answer 8

This is when the blood collects between the uterus and placenta, it doesn’t come away, it just gathers.

Question 9

At what gestation is the placenta fully formed? 1)
A) 20 weeks
B) 5 weeks
C) 10 weeks
D) 16 weeks

Answer 9

C- 10 weeks

Question 10

What is the difference between the chorion and the amnion?

Answer 10

Chorian is the outer membrane, and amnion is the inner membrane

Question 11

Name one risk factor of placental abruption

Answer 11

Smoking

Question 12

Deoxygenated blood is taken from the fetus to the mother by the…

Answer 12

Arteries

Question 13

….. Jelly is the outer layer covering the cord.

Answer 13

Whartens.