Select your answer:
Topics:
Health and Nutrition Cell Cycle; Cancer Science Reproduction Respiratory System Hematology in Veterinary Medicine Gestalt Therapy Essential Nutrients The Cardiovascular System: Blood Vessels and Hemodynamics Salmonella vs E.coli Abnormal Psychology; Assessment and Diagnosis Heart Structure and Double Circulation Discovery of DNA Pain Management PHE Healthy Lifestyle Disease, Illness and SicknessOther quiz:
Name that Pathogen › ViewI am caused by the human immunodeficiency virus
A. TB
B. HIV/AIDS
C. Cholera
D. Malaria
Sense of Sight › View
The small opening in the middle of the iris is called the _.
A. pupil
B. choroid layer
C. retina
D. cones