FETAL CIRCULATION

PRESENTED BYMs. RIYA JOY

MEANING OF FETAL CIRCULATION

The blood circulation in the fetus before birth

NORMAL ADULT CIRCULATION

FETAL CIRCULATION

DUCTUS VENOSUS DUCTUS ARTERIOSUS FORAMEN OVALE UMBILICAL ARTERIES AND

UMBILICAL VEIN

FETAL CIRCULATION

CHANGES AFTER BIRTH

Closure of the umbilical arteriesClosure of the umbilical veinDuctus venosus collapses Closure of ductus arteriosusClosure of the foramen ovale

Fetal Structure Adult StructureForamen Ovale Fossa Ovalis

Umbilical Vein(intra-abdominal part)

Ligamentum teres

Ductus Venosus Ligamentum venosum

Umbilical Arteries and abdominal ligaments

medial umbilical ligaments,superior vesicular artery (supplies bladder)

Ductus Arteriosum Ligamentum arteriosum

CONGENITAL ANOMALIES

PATENT DUCTUS ARTERIOSUS

PATENT FORAMEN OVALE

QUESTION PAPERTOTAL MARKS:15marks

TOTAL TIME:30mts

I. MULTIPLE CHOICE QUESTIONS 5*1= 5marks

1. Ductus venosus is the connection between

a)umbilical vein and inferior venacava b)right atrium and left atrium c)pulmonary artery and descending aorta

2. Fossa ovalis is the remnant of

a)ductus arteriosus b)ductus venosus c)foramen ovale

3. Ductus arteriosus is the connection between

a)umbilical vein and inferior venacava

b)right atrium and left atrium

c)pulmonary artery and descending aorta

4. In fetus the umbilical vein carry

a) oxygenated blood b)deoxygenated blood

5. Foramen ovale is the opening between

a)umbilical vein and inferior venacava

b)right atrium and left atrium

c)pulmonary artery and descending aorta

II. Explain the fetal circulation

1*10= 10marks