★ Human Body Quiz
Approximately there are ________ million of alveoli in the lungs.
A. 100
B. 850
C. 912
D. 750
Select your answer:

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Nutrition, Neuroscience & Mental Health Microorganism - Diseases Pediatric Musculoskeletal Disorders Skin Structure, Growth & Nutrition Physiology Pathology Disability Etiquette & Physical Activities Mechanical Digestion Epithelial Special Senses Cells, Tissues and Organs Respiration, Immune System, Blood Cells Sexual Reproduction Carbohydrates Types of Nutrients Upper LimbOther quiz:
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A. Pathogens
B. Hosts
C. Phagocytes
D. Toxins
Immune system › View
What initiates clotting?
A. clotting factors released by damaged cells
B. cytokines released by t-cells
C. the conversion of prothrombin to thrombin
D. the release of b-cells