★ Sense of Sight Quiz
The small opening in the middle of the iris is called the _.
A. pupil
B. choroid layer
C. retina
D. cones
Select your answer:

Topics:
Transport System DNA and Genetic Manipulation Protozoan Diseases Hele Skeletal System Respiration, Immune System, Blood Cells Pharmacology Vitamins CABG Surgery Hematologic System Child Growth and Development Skeletal System Bacteria, Viruses, Protozoa Fungi Contemporary Nutrition Issues Hearing Impairment Muscular System Movements Transportation in OrganismsOther quiz:
Limitation of Senses › View Name the optical device
A. telescope
B. microscope
C. binocular
Tissues Vocabulary › View
cube shaped cells
A. Neuron
B. columnar epithelial cells
C. cuboidal epithelial cells
D. squamous epithelial cells