Free Human Body and Health MCQs with Answers

• A. Elastic cartilage
• B. Fibrocartilage
• C. Articular cartilage
• D. none

Explanation: The external ear, or pinna, is shaped and supported mainly by elastic cartilage, which bends and returns to its original form.

• A. Super infection
• B. Drug resistance
• C. Allergy
• D. none

Explanation: An immune reaction to a drug is a drug allergy, an adverse response involving the immune system.

• A. Thoracic
• B. Pelvic
• C. Lumbar
• D. none

Explanation: The spinal cord is divided into cervical, thoracic, lumbar, sacral, and coccygeal regions; pelvic is not one of them.

• A. Cardiac muscles
• B. Skeletal muscles
• C. Smooth muscles
• D. none

Explanation: The autonomic nervous system controls involuntary cardiac and smooth muscles, along with glands and internal organs.

• A. Optic
• B. Trigeminal
• C. Abducens
• D. none

Explanation: The abducens nerve controls the lateral rectus muscle, which moves the eye outward.

• A. Calcium ions
• B. Clotting proteins
• C. Globulins
• D. none

Explanation: Serum is the liquid left after blood has clotted, so it is plasma without most clotting proteins, especially fibrinogen.

• A. Chemotrypsin
• B. Secretin
• C. Pepsin
• D. none

Explanation: Secretin is a digestive hormone released by the small intestine, not an enzyme. Chymotrypsin and pepsin are protein-digesting enzymes.

• A. AB-
• B. O-
• C. O+
• D. none

Explanation: An O blood-group child must inherit an O allele from each parent, but an AB mother has only A and B alleles.

• A. Immunology
• B. Paracitology
• C. Epidemiology
• D. none

Explanation: Epidemiology studies the distribution, causes and control of diseases in human populations.

• A. Pituitary
• B. Pancreas
• C. Thyroid
• D. None

Explanation: ADH is made in the hypothalamus but stored and released by the posterior pituitary, so standard MCQs credit the pituitary gland.

• A. Vitamin A
• B. Vitamin D
• C. Vitamin K
• D. None

Explanation: Vitamins B and C are water-soluble, whereas vitamins A, D, E and K are fat-soluble.

• A. Mosses
• B. Bacteria
• C. Protozoa
• D. None

Explanation: In mosses, the conspicuous and nutritionally independent plant is the haploid gametophyte, while the diploid sporophyte remains attached…

• A. Tiger
• B. Lion
• C. Leopard
• D. None

Explanation: The tiger is the largest living member of the cat family, although individual lions can sometimes be very large.

• A. Botany
• B. Zoology
• C. Astronomy
• D. None

Explanation: Abu Usman Al-Jahiz is remembered for zoological writing, especially his work on animals and their behaviour.

• A. 140-150
• B. 115-125
• C. 72-80
• D. 60

Explanation: A normal resting adult pulse is commonly about 60 to 100 beats per minute, with 72 to 80 often used as the average range.

• A. Eye is unable to adjust itself immediately
• B. Retina becomes insensitive momentarily
• C. Iris is unable to dilate the pupil immediately
• D. Distance between the lens and retina take time to adjust

Explanation: In bright light, the iris keeps the pupil constricted; entering darkness requires time for the pupil to dilate and for the retina to…

• A. Lens
• B. Film
• C. Aperture
• D. Shutter

Explanation: The retina receives the focused image and converts light into nerve signals, just as photographic film records the image in a camera.

• A. First cloned sheep
• B. First cloned monkey
• C. First test-tube baby
• D. First human fossil

Explanation: Dolly was the first mammal cloned from an adult body cell, making her the first cloned sheep.

• A. Kidney failure
• B. Heart weakness
• C. Brain diseases
• D. None of these

Explanation: Dialysis filters wastes and excess fluid from the blood when the kidneys can no longer perform this function adequately.

• A. Brain
• B. Heart
• C. Kidneys
• D. Lungs

Explanation: An ECG records the heart’s electrical activity through electrodes placed on the skin.