Question

Which of the following carries blood from the hypothalamus of the brain to the anterior lobe of pituitary?

• A. Hepatic portal system
• B. Hypophyseal portal system
• C. Renal portal system
• D. None of these

Answer 1

The correct option is B Hypophyseal portal system

Hypophyseal portal system carries blood from the hypothalamus of the brain to the anterior lobe of the pituitary.
Flow of deoxygenated blood from the digestive organs to the liver before returning to the heart is carried out by the hepatic portal system.
Flow of deoxygenated blood from the body to the kidney before returning to the heart is carried out by the renal portal system.
It is absent in mammals, very well developed in fishes and amphibians, fairly developed in reptiles and vestigial in birds.