The respiratory system in the human body is shown in the diagram below. What is the main relationship between the trachea, bronchioles, and alveoli?
A. They work together to transport nutrients.
B. They work together to regulate body temperature.
C. They work together to store fluids to prevent dehydration.
D. They work together to maintain the oxygen level in the blood.
Select your answer:
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Homeostasis, Nutrition, Digestion & Absorption › ViewWhen glucose levels in the blood rise, your brain sends a signal to your pancreas. The pancreas releases insulin, which opens channels in cell membranes to allow glucose to enter the cell, lowering blood sugar levels.
A. Positive Feedback Response
B. Negative Feedback Loop
Circulatory System › View
These are flap like structures that prevent blood from flowing back to the body parts.
A. Veins
B. Cappilaries
C. Valves
D. None of the above