Inferior vena cava

INFERIOR VENA CAVA

Q. 1

A Lecturer is demonstrating a fibrous band that runs on the visceral surface of the liver. It is attached on one end to the inferior vena cava and on the other end to the left branch of the portal vein. In the Adult the structure corresponds to?

 A

Ductus venosus

 B

Ligamentum teres

 C

Ligamentum venosum

 D

Umbilical arteries

Q. 1

A Lecturer is demonstrating a fibrous band that runs on the visceral surface of the liver. It is attached on one end to the inferior vena cava and on the other end to the left branch of the portal vein. In the Adult the structure corresponds to?

 A

Ductus venosus

 B

Ligamentum teres

 C

Ligamentum venosum

 D

Umbilical arteries

Ans. C

Explanation:

Ligamentum Venosum


Q. 2

The posterior relation of epiploic foramen is?

 A

Hepatic artery

 B

Inferior vena cava

 C

Common bile duct

 D

Portal vein

Q. 2

The posterior relation of epiploic foramen is?

 A

Hepatic artery

 B

Inferior vena cava

 C

Common bile duct

 D

Portal vein

Ans. B

Explanation:

Epiploic foramen or aditus to lesser sac communicates lesser sac to greater sac. It is bounded posteriorly by inferior vena cava, suprarenal gland and T12 vertebra.
 
Epiploic foramen: also known as foramen of winslow is a vertical slit like opening, through which the lesser sac communicates with the greater sac. It is situated at the upper wall of lesser sac at the level of T12.
Boundaries of the epiploic foramen:
  • Anteriorly: right free margin of lesser omentum containing portal vein, hepatic artery and bile duct
  • Posteriorly: suprarenal gland, inferior vena cava and T12 vertebra
  • Superiorly: caudate lobe of liver
  • Inferiorly: 1st part of duodenum and hepatic artery

Q. 3

The tributaries of the inferior vena cava include all of the following, EXCEPT?

 A

Left renal vein

 B

Left gonadal vein

 C

Hepatic vein

 D

Right suprarenal vein

Q. 3

The tributaries of the inferior vena cava include all of the following, EXCEPT?

 A

Left renal vein

 B

Left gonadal vein

 C

Hepatic vein

 D

Right suprarenal vein

Ans. B

Explanation:

Left adrenal vein and gonadal vein drain into left renal vein. The left renal vein is single and preaortic in 80% individuals. 

 Right adrenal vein drains into drains directly into the inferior vena cava just superior to the right vein insertion.
 
The tributaries of Inferior vena cava are:
  • Two anterior visceral tributaries: the hepatic veins
  • Three lateral visceral tributaries: Right suprarenal vein, renal veins, right testicular or ovarian vein
  • Five lateral abdominal wall tributaries: Inferior phrenic vein, four lumbar veins
  • Three tributaries of origin: two common iliac veins and median sacral vein.

Q. 4

All of the following veins are formed from vitelline vein except

 A

Hepatic vein

 B

Superior vena cava

 C

Inferior vena cava

 D

Superior mesenteric vein

Q. 4

All of the following veins are formed from vitelline vein except

 A

Hepatic vein

 B

Superior vena cava

 C

Inferior vena cava

 D

Superior mesenteric vein

Ans. B

Explanation:

B i.e. Superior Vena Cava


Q. 5

The most important structure involved in development of inferior vena cava is ‑

 A

Supracardinal vein & Subcardinal vein

 B

Umbilical vein

 C

Anterior cardinal vein

 D

Posterior cardinal vein

Q. 5

The most important structure involved in development of inferior vena cava is ‑

 A

Supracardinal vein & Subcardinal vein

 B

Umbilical vein

 C

Anterior cardinal vein

 D

Posterior cardinal vein

Ans. A

Explanation:

A i.e.

 

Supracardinal

vein & subcardinal vein


Q. 6

True about inferior vena cava:

 A

Passes through diaphragm at level of Du vertebra

 B

Rt. Suprarenal artery directly drains to it.

 C

It lies anterior to the renal vein.

 D

It forms the posterior wall of the epiploic foramen.

Q. 6

True about inferior vena cava:

 A

Passes through diaphragm at level of Du vertebra

 B

Rt. Suprarenal artery directly drains to it.

 C

It lies anterior to the renal vein.

 D

It forms the posterior wall of the epiploic foramen.

Ans. D

Explanation:

D. i.e. It forms posterior wall of epiploic foramen

Right free margin of lesser omentum containing portal vein, hepatic artery & bile duct are situated anteriorly; and Suprarenal gland (right), Inferior vena cava, & T12 vertebra (“SIT” structures) are related posteriorly to Epiploic foramen


Q. 7

‘Obstruction of Inferior vena cava’ presents :

 A

Paraumblical dilatation

 B

Thoraco-epigastric dilatation

 C

Oesophagus varies

 D

Haemorrhoides

Q. 7

‘Obstruction of Inferior vena cava’ presents :

 A

Paraumblical dilatation

 B

Thoraco-epigastric dilatation

 C

Oesophagus varies

 D

Haemorrhoides

Ans. B

Explanation:

B i.e. Thoraco-epigastric dilation


Q. 8

The right suprarenal vein drains into the

 A

Inferior vena cava

 B

Right renal vein

 C

Right Gonadal vein

 D

Left Renal vein

Q. 8

The right suprarenal vein drains into the

 A

Inferior vena cava

 B

Right renal vein

 C

Right Gonadal vein

 D

Left Renal vein

Ans. A

Explanation:

A i.e. Inferior vena cava

Left testicular, ovarian or suprarenal vein usually drains into left renal veinQ, before entering the IVC

                             Organ

Vein

Drain into

Rt. Suprarenal gland

Rt. Suprarenal vein

IVCQ

Lt. Suprarenal gland

Lt. Suprarenal vein

Left Renal VeinQ

  • Same is true for gonads (testis /ovary) i.e.

Lt. Gonad (testis or ovary)

Lt. Gonadal (testicular or ovarian) vein

Left renal veinQ

Rt. Gonad (testis or ovary)

Rt. Gonadal (testicular or ovarian)

vein

IVCQ


Q. 9

Double inferior vena cava is formed due to‑

 A

Persistence of sacrocardinal veins

 B

Persistance of supracardinal veins

 C

Persistance of subcardinal veins

 D

Persistance of both supracardinal and subcardinal veins

Q. 9

Double inferior vena cava is formed due to‑

 A

Persistence of sacrocardinal veins

 B

Persistance of supracardinal veins

 C

Persistance of subcardinal veins

 D

Persistance of both supracardinal and subcardinal veins

Ans. D

Explanation:

Ans. is ‘d’ i.e., Persistance of both supracardinal and subcardinal veins

Developmental anomalies of veins

A. Anomalies of SVC

  • Left superior vena cava is formed when left anterior cardinal and common cardinal veins persist and the right ones obliterate. Left SVC opens into right atrium through the coronary sinus.
  • Double superior vena cava occurs due to persistence of left anterior cardinal vein. The right SVC opens directly into right atrium while left one opens through coronary sinus.

B. Anomalies of IVC

  • Absence of inferior vena cava above renal veins occurs when the anastomotic channel between right subcardinal vein and right lepatocardinal channel fails to develop.
  • Double inferior vena cava is formed below renal veins due to persistence of both the subcardinal and supracardinal veins below the kidney.
  • Left inferior vena cava, i.e. infrarenal part of IVC is formed on left side instead of right.
  • Preureteric IVC is formed when infrarenal part of IVC develops from subcardinal vein (which lies anterior to ureter) instead of supracardinal vein (which lies posterior to ureter).


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