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In the vascular system, an alternate pathway for blood flow is provided by vessels called a(n) ____________________.
Q4: In veins,the outer layer is thinner than
Q5: Which of the following statements are true
Q7: In fetal circulation,the _ permits blood to
Q11: Which of the following statements are true
Q26: The percent of the blood in a
Q50: Which statement is NOT true of the
Q65: For breaks or ruptures in large arteries,the
Q73: A vaccine works because it takes the
Q76: The lymph in the system of lymph
Q89: The tricuspid valve prevents backflow of blood