Free Human Body and Health MCQs with Answers

211. Anti Diuretic hormone (ADH) is secreted by?

• A. Pituitary gland
• B. Pancreas
• C. Thyroid
• D. Parathyroid

Explanation: ADH is produced in the hypothalamus and released into the blood by the posterior pituitary, so the pituitary gland is the expected answer. It helps the kidneys conserve water by increasing water reabsorption.

212. Zika virus was named after the Zika forest of which country?

• A. Nigeria
• B. Angola
• C. Uganda
• D. Zimbabwe

Explanation: The virus was identified in Uganda's Zika Forest, near Entebbe, in 1947. Its name therefore comes from Uganda, not the other African countries listed.

213. Cancer can be treated by ___________?

• A. Antibiotics & vaccines
• B. Radiotherapy & antibiotics
• C. Chemotherapy & radiotherapy
• D. Antibiotics & Chemotherapy

Explanation: Chemotherapy uses anti-cancer drugs, while radiotherapy uses ionising radiation to destroy or control cancer cells. Both are established cancer treatments, although surgery and other therapies may also be used.

214. Which one of the following is called the Blood Bank?

• A. Kidneys
• B. Liver
• C. Spleen
• D. Heart

Explanation: The spleen stores and filters blood and can act as a reservoir for blood cells, which is why it is traditionally called the blood bank. The liver has major blood-processing functions but is not given this standard name.

215. Which one of the following is known as graveyard of RBCs?

• A. Liver
• B. Spleen
• C. Pancreas
• D. None of these

Explanation: The spleen removes old or damaged red blood cells from circulation, so it is commonly called their graveyard. The liver also helps break down blood-cell products but is not the standard answer here.

216. What is the chemical name of vitamin E?

• A. Calciferol
• B. Tocopherol
• C. Riboflavin
• D. Phylloquinone

Explanation: Vitamin E is a group of compounds known as tocopherols and tocotrienols, with alpha-tocopherol being the main biologically active form. Calciferol is vitamin D, riboflavin is vitamin B2, and phylloquinone is vitamin K1.

217. Which of following is not a digestive enzyme in human body?

• A. Pepsin
• B. Trypsin
• C. Gastrin
• D. Ptyalin

Explanation: Gastrin is a hormone that stimulates gastric acid secretion, not a digestive enzyme. Pepsin, trypsin, and ptyalin are enzymes that digest proteins or starch.

218. Which body part in Human never grow?

• A. Pupil of eye
• B. Kidney
• C. Liver
• D. None of these

Explanation: The pupil is an opening in the iris, not a growing organ, and its diameter changes mainly with light intensity. The kidney and liver grow as the body develops.

219. Clotting of blood vessels is called?

• A. Thrombosis
• B. Fibrosis
• C. Agglutination
• D. None

Explanation: Thrombosis is the formation of a blood clot inside a blood vessel, which may obstruct blood flow. Fibrosis means scar-tissue formation, while agglutination means clumping of cells or particles.

220. The weight of an average human male brain is about?

• A. 1 gr
• B. 1200 gr
• C. 1350 gr
• D. 1500 gr

Explanation: An average adult male brain weighs approximately 1,350 grams, although normal individual variation is considerable. The commonly quoted average for females is slightly lower.