★ Circulatory System Quiz
What is the main organ in the circulatory system?
A. vein
B. lung
C. heart
D. aorta
Select your answer:
Topics:
Blood/Lymphatic/Immune HFT Vitamins Skeletal Pathology Asexual Reproduction Eye Histology Cosmetology The Inflammatory Response Excretion-Dialysis Healthy Foundations Nutrient Cycling Orthopedic Surgeon Type 1 Diabetes Stimuli and Responses in Humans Abnormal Psychology; Assessment and Diagnosis Body FluidsOther quiz:
Biology › ViewGreen & purple bacteria belong to the ……………. bacteria
A. saprophytic
B. parasitic
C. autotrophic
D. holozoic
Biology › View
What is an organism that consists of one cell?
A. unicellular
B. multicellular
C. nucleus
D. organelle