circulatory system anatomy Q5

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

what r the veins that form the hepatic portal v?

the superior mesenteric v and the splenic v at the transpyloric plane (L1/L2).

how does the fetus obtain oxygen?

from the mother via (placenta circulation).

there r three shunts ( open pre-natally) in the fetal circulation, what are they?

1- foramen ovale; between atria, blood bypass pulmonary circulation.

2- ductus arteriosus: link the distal part of aorta to the pulmonary trunk, blood bypass the pulmonary circulation.

3- ductus venosus: take 30% of umbilical blood from the primitive liver to the IVC to ensure enough oxygen reaching the developing brain (foetus's brain).

how does the foramen ovale close after the baby is delivered?

<p>the baby's first breath&gt;a decrease in pulmonary vasculature resistance&gt;increases pressure in the LA&gt;RA&gt; the ovale shut closing the opening.</p> Signup and view all the answers

what hormone that decreases after birth and removal of placenta?

<p>prostaglandins.</p> Signup and view all the answers

a substance released from lungs due to increased O2 concentration and causes the wall closure of ductus venosus, arteriosus?

<p>Brdaykinin.</p> Signup and view all the answers

what hormone keep the ductus venosus and arteriosus open?

<p>prostaglandins (PGE2)</p> Signup and view all the answers

what does the ductus venosus become after birth?

<p>ligamentum venosum.</p> Signup and view all the answers

what does the the foramen ovale become after birth?

<p>fossa ovalis ( isolates deoxygenated blood from oxygenated blood)</p> Signup and view all the answers

Flashcards are hidden until you start studying

More Like This

Anatomy of Liver Circulation and Drainage
29 questions
Liver Cirrhosis: Physiology & Anatomy
29 questions

Liver Cirrhosis: Physiology & Anatomy

IngenuousSnowflakeObsidian6797 avatar
IngenuousSnowflakeObsidian6797
Amino Acid Absorption
36 questions

Amino Acid Absorption

FavoredNumber7816 avatar
FavoredNumber7816
Use Quizgecko on...
Browser
Browser