Shared Flashcard Set

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Heart
Power Point 5
23
Anatomy
Undergraduate 2
03/24/2015

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Cards

Term
What are the 2 special vessels through umbilical cord?
Definition
Umbilical Vein
Umbilical Arteries (2)
Term
What direction does the blood flow through the Umbilical Vein?
Definition
From placenta to fetus
(Relatively oxygen and nutrient rich blood)
Term
What direction does the blood flow through the Umbilical Arteries?
Definition
From fetus to placenta
(Relatively oxygen and nutrient poor blood)
Term
What does the Umbilical Vein become after birth?
Definition
Falciform Ligament
Term
What three shunts are in fetal circulation?
Definition
Ductus Venosus
Foramen Ovale
Ductus Arteriosus
Term
Where is the Ductus Venosus located?
Definition
Umbilical vein to caudal vena cava
Term
What is the purpose of the Ductus Venosus?
Definition
Bypasses liver since fetus is not eating
Term
Where is the Foramen Ovale located?
Definition
Right to left atrium
Term
What is the purpose of the Foramen Ovale?
Definition
Bypasses the lungs since fetus is not breathing
Term
Where is the Ductus Arteriosus located?
Definition
Pulmonary artery to aorta
Term
What is the purpose of the Ductus Arteriosus?
Definition
Bypasses the lungs since fetus is not breathing
Term
After it closes, what is the remnant of the Ductus Venosus known as?
Definition
Ligamentum Venosum
Term
After it closes, what is the remnant of the Foramen Ovale known as?
Definition
Fossa Ovalis
Term
After it closes, what is the remnant of the Ductus Arteriosus known as?
Definition
Ligamentum arteriosum
Term
Definition of Portal Systems
Definition
Blood system from one area (organ) of body to another before general circulation
Term
What does the Hepatic portal vein do?
Definition
Collects blood from GIT to liver
Nutrients processed
“Filters” blood – wastes, drugs, part of MPS
Term
Where does the Renal portal vein go?
Definition
Hind limbs to renal portal system to kidneys
Lower vertebrates
Term
Do fish have lungs?
Definition
No, only gills
Term
How many chambers do fish hearts have?
Definition
2
Term
How many chambers do amphibian hearts have?
Definition
3- 2 atrium, 1 ventricle
Term
How many chambers do most reptile hearts have?
Definition
3
Term
What special thing do reptiles have in their ventricles?
Definition
Trabeculae
Term
What special circuit do amphibians have?
Definition
Pulmocutaneous because they also breathe through their skin
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