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Hemoglobin has five iron atoms that combine with oxygen gas in the lungs.
Q2: Within the medulla of the kidney are
Q9: The urinary system helps to keep the
Q13: The _ gland produces tears.<br>A) trigeminal<br>B) choroid<br>C)
Q20: Neurons that have several dendrites and one
Q20: Blood poisoning is also known as _.<br>A)
Q24: The _ ducts empty urine into the
Q25: The anterior pituitary secretes _, which stimulates
Q30: The sense of smell detects _ stimuli.<br>A)
Q34: Why do we say that the U.S.
Q48: outer area of the kidney