Q 01/05

How many bones are typically found in the adult human body?

A) 26

B) 86

C) 206

D) 506

Answer · why

C) 206

206 is the usual adult count, but none of it is inert: bone is living tissue that the body keeps breaking down and rebuilding throughout life.

Q 02/05

What is the folded outer layer of grey matter covering the brain called?

A) Cerebellum

B) Cerebral cortex

C) Hypothalamus

D) Basal ganglia

Answer · why

B) Cerebral cortex

The cerebral cortex is only 2 to 4 mm thick, so its folds are what let such a large sheet of it fit inside the skull.

Q 03/05

Which is the thickest and strongest tendon in the human body?

A) Patellar tendon

B) Achilles tendon

C) Hamstring tendon

D) Rotator cuff tendon

Answer · why

B) Achilles tendon

The Achilles tendon ties the calf muscles to the heel bone and is named after the Greek hero Achilles, who in legend could be wounded only in the heel...

Q 04/05

Which organ in the throat is commonly known as the voice box?

A) The pharynx

B) The larynx

C) The trachea

D) The uvula

Answer · why

B) The larynx

The larynx houses the vocal cords; at puberty its front wall grows more prominent in boys, forming the bump known as the Adam's apple.

Q 05/05

Which blood type is the 'universal recipient', able to receive red cells from every ABO and Rh group?

A) AB positive

B) A positive

C) B negative

D) A negative

Answer · why

A) AB positive

AB positive red cells already carry the A, B and Rh antigens, so nothing in a donor's red cells looks foreign to the immune system; O negative is the ...