Fetal Circulation Flashcards Preview

Anatomy Exam 1 > Fetal Circulation > Flashcards

Flashcards in Fetal Circulation Deck (14):
1

Placenta

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

2

Umbilical Vein

Single Vein
OXYGENATED BLOOD

3

Umbilical Arteries

Two arteries
DEOXYGENATED BLOOD

4

Five Specilizations of the circulatory system on the unborn child

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

5

Ductus Venosus

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

6

Fetal blood flow

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)

7

Foramen Ovale

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

8

Ductus Arteriosus

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

9

Two common iliac arteries

Form the external and internal iliac arteries
Pass on either side of the urinary bladder and penetrate the umbilicus

10

Umbilicus

Belly Button

11

Ligamentum Vensosum

Formed by blood clotting in the ductus venosus after birth

12

Ligamentum Arteriosum

Formed by blood clotting in the ductus arteriosus after birth

13

Fossa Ovalis

The closed foramen ovale after about one year in the heart

14

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

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