Medical Quiz
Nervous System Quiz

How many neurons make up the brain?

A. 1 million

B. 100 million

C. 1 billion

D. 100 billion

E. 1 trillion

Select your answer:
A  B  C  D  E 

Topics:

Genes and Cells Blood types and Blood Components Orthopedics Microbial Growth & Nutrition Endocrine System Healthy Living Vocabulary Infectious Diseases What is Psychology? Integumentary and Musculoskeletal Systems Respiration, Immune System, Blood Cells Malaria Healthcare Delivery Systems and Insurance Biocomposite Reproduction in Human Beings Genes, Genomes & Alleles

Other quiz: Homeostasis, Nutrition, Digestion & Absorption

The stomach wall produces mucus to cover its surface. Which of the following statements correctly describe(s) the function of the mucus?

(1) It kills the bacteria in the ingested food.

(2) It prevents the rubbing of food against the stomach wall.

(3) It protects the stomach wall from the action of the digestive enzymes.

A. (1) only

B. (3) only

C. (1) and (2) only

D. (2) and (3) only