Medical Quiz
Circulation and Excretion Quiz

What regulates human respiration rate?

A. oxygen levels

B. carbon monoxide levels

C. carbon dioxide levels

Select your answer:
A  B  C  D  E 


Kidney - Loop of Henl Skeletal System Fad Diets Healthcare Delivery Systems and Insurance Histology - Tissues Physical Education Stroke Microbial Growth Joints Brain Integumentary and Musculoskeletal Systems Reproduction PHE Healthy Lifestyle Regulation of Urine Formation Metabolic Sauver

Other quiz: The Musculoskeletal and Integumentary Systems

The biggest muscle

A. gluteus maximus

B. stapedius muscle

C. sartorius