Fetal Circulation Flashcards

1
Q

Placenta

A

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

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2
Q

Umbilical Vein

A

Single Vein

OXYGENATED BLOOD

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3
Q

Umbilical Arteries

A

Two arteries

DEOXYGENATED BLOOD

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4
Q

Five Specilizations of the circulatory system on the unborn child

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

Ductus Venosus

A

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

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6
Q

Fetal blood flow

A

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)

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7
Q

Foramen Ovale

A

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

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8
Q

Ductus Arteriosus

A

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

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9
Q

Two common iliac arteries

A

Form the external and internal iliac arteries

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

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10
Q

Umbilicus

A

Belly Button

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11
Q

Ligamentum Vensosum

A

Formed by blood clotting in the ductus venosus after birth

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12
Q

Ligamentum Arteriosum

A

Formed by blood clotting in the ductus arteriosus after birth

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13
Q

Fossa Ovalis

A

The closed foramen ovale after about one year in the heart

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14
Q

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

A

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

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