Free Human Body and Health MCQs with Answers

431. Which bone in human body is not directly attached to other bones?

• A. Ulna
• B. Hyoid
• C. Tibia
• D. Cranium

Explanation: The hyoid is suspended in the neck by muscles and ligaments and does not form a direct bony joint with another bone. The ulna, tibia and cranium are all attached to other bones.

432. Where is the uvula located in human body?

• A. Throat
• B. Stomach
• C. Scrotum
• D. None

Explanation: The uvula is the small, fleshy projection hanging from the soft palate at the back of the mouth, in the throat region. It helps during swallowing and speech.

433. Maxilla bones are found in___________?

• A. Jaw
• B. Toe
• C. Ear
• D. Stomach

Explanation: The maxillae are the paired upper-jaw bones; they form the upper jaw and part of the face. They are not bones of the lower jaw, which is the mandible.

434. How many blood vessels can be found in the Umbilical Cord?

• A. Two
• B. One
• C. Four
• D. Three

Explanation: A normal human umbilical cord contains three vessels: two umbilical arteries and one umbilical vein. The vein carries oxygenated blood toward the fetus, while the arteries carry deoxygenated blood away.

435. Which breed of dog has a black tongue?

• A. Chow Chow
• B. Shih Tzu
• C. Husky
• D. None

Explanation: The Chow Chow is famous for its blue-black tongue, a distinctive breed characteristic. A few other breeds may show dark pigmentation, but Chow Chow is the standard answer among these options.

436. What is amoxicillin?

• A. Type of birth control
• B. A herbal remedy
• C. An antibiotic
• D. None

Explanation: Amoxicillin is a penicillin-type antibiotic used against susceptible bacterial infections. It does not treat viral illnesses and is not a herbal remedy or contraceptive.

437. In HomoSapiens (Human) the fertilization occurs in the___________?

• A. Uterus
• B. Ovaries
• C. Oviduct
• D. Cervix

Explanation: In humans, fertilization normally occurs in the fallopian tube, also called the oviduct, usually in its ampulla. The fertilized egg then travels to the uterus for implantation.

438. Which of the following vitamin is known as Niacin?

• A. vitamin B-6
• B. vitamin B-12
• C. vitamin B-1
• D. vitamin B-3

Explanation: Niacin is vitamin B3, a water-soluble vitamin needed for energy metabolism and healthy skin and nerves. Vitamin B1 is thiamine, while B6 and B12 are different vitamins.

439. The deficiency of vitamin K causes ________ ?

• A. Loss of appetite
• B. Scurvy
• C. Sterility
• D. Blood clotting disorder

Explanation: Vitamin K is required for producing several clotting factors in the liver, so its deficiency causes prolonged bleeding or a blood-clotting disorder. Scurvy results from vitamin C deficiency.

440. The deficiency of vitamin E causes _______ ?

• A. Weak immune system
• B. Weak bones
• C. Lack of appetite
• D. Sterility

Explanation: Severe vitamin E deficiency can damage reproductive function and is classically associated in basic nutrition questions with sterility. Vitamin D deficiency is the typical cause of weak bones.