Fetal Circulation

Question 1

Placenta

Answer 1

Provides the Fetus with oxygen and nutrients by the Umbilical vein and deals with waste products (CO2) from the umbilical arteries

Question 2

Umbilical Vein

Answer 2

Single Vein

OXYGENATED BLOOD

Question 3

Umbilical Arteries

Answer 3

Two arteries

DEOXYGENATED BLOOD

Question 4

Five Specilizations of the circulatory system on the unborn child

Answer 4

1. Umbilical vein
2. Ductus Venosus
3. Foramen Ovale
4. Ductus Arteriosus
5. Umbilical arteries

Question 5

Ductus Venosus

Answer 5

Special channel that bypasses the liver and connect the solitary umbilical vein directly to the inferior vena cava

Question 6

Fetal blood flow

Answer 6

Deoxygenated venous blood is retured from the head, neck and upper extremities by the superior vena cava entering the right atrium
Along with blood from inferior vena cava (Oxygenated blood)

Question 7

Foramen Ovale

Answer 7

Oval opening in the fetal heart that allows for blood to pass from right atrium to the left atrium
AVOIDING the immature lungs

Question 8

Ductus Arteriosus

Answer 8

Connects the pulmonary trunk to the arch of the aorta
Helps to move blood away from the non-functional fetal lungs
Allowing the thoracic and Abdominal Aorta to have oxygen and nutrients

Question 9

Two common iliac arteries

Answer 9

Form the external and internal iliac arteries

Pass on either side of the urinary bladder and penetrate the umbilicus

Question 10

Umbilicus

Answer 10

Belly Button

Question 11

Ligamentum Vensosum

Answer 11

Formed by blood clotting in the ductus venosus after birth

Question 12

Ligamentum Arteriosum

Answer 12

Formed by blood clotting in the ductus arteriosus after birth

Question 13

Fossa Ovalis

Answer 13

The closed foramen ovale after about one year in the heart

Question 14

Round Ligament of the liver (Ligamentum Teres) and medial umbilical ligaments

Answer 14

Portions of the umbilical vein and umbilical arteries form scar tissue after birth