★ Eye and Ear Quiz
What part of the eye controls how much light enters the black hole (pupil) in the center of the eye?
A. optic nerve
B. pupil
C. cornea
D. iris
Topics:
Circulatory and Nervous System Pulmonology Counseling: Fact or Myth? Paeds Edema Respiratory System Med Term Patho_Genetics Understanding Psychology Nervous System Skeletal System Homeostatic Imbalances Genetics and Censorship Muscular Homeostasis, Nutrition, Digestion & Absorption Chest, Back, Abs Homeostasis and Disease Immune Response The Nervous SystemOther quiz: Beneath the Skin
The main role of your blood is to
A. carry oxygen to the rest of your body
B. carry carbon dioxide back to your lungs
C. carry nutrients to the cells of your body
D. all of the above