Question

Trace blood flow from the Inferior Mesenteric Vein to the Brain.

Answer 1

Answer) Tracing of blood from inferior mesenteric vein to brain-

Inferior mesenteric vein

Splenic vein

Portal vein

Hepatic vein

Inferior vena cava

Right atrium

Right atrioventricular valve (tricuspid valve)

Right ventricle

Pulmonary trunk

Pulmonary artery

Lungs

Pulmonary vein

Left atrium

Left atrioventricular valve (bicuspid valve)

Left ventricle

Ascending aorta

Arch of aorta

Common carotid artery and Subclavian artery

Internal carotid artery (a branch of common carotid artery) and vertebral artery (a branch of subclavian artery)

Internal carotid artery divides into large middle cerebral artery and smaller anterior cerebral artery, which supplies the brain.

Vertebral arteries (left and right) unites to form basilar artery.

Basilar artery divides into the right and left posterior cerebral arteries, which also supplies the brain.

Explanation -

Inferior mesenteric vein drains into splenic vein and then to portal vein.

Portal vein drains blood into hepatic veins and then to the inferior vena cava.

This deoxygenated blood travels to right atrium and ventricle, then to the lungs and oxygenation takes place in it.

The oxygenated blood travels to left atrium and ventricle, then to arch of aorta.

Arch of aorta gives 3 branches - branchiocephalic artery, left common carotid artery and left subclavian artery.

Then, brachiocephalic artery gives 2 branches right common carotid artery and right subclavian artery.

Common carotid artery gives a branch called internal carotid artery.

Subclavian artery gives a branch called vertebral artery.

Internal carotid arteries and vertebral arteries supplies the brain through their branches.