Ch.18- The Blood

• What carries oxygenated blood?


  an artery moving blood from the heart to a muscle

  
• What is the function of lymph node?

  filter debris from intracellular spaces
• What is the function of the spleen?


  filter blood and help fight infections
• What is the most abundant cells?

  red blood cells
• What is the pacemaker of the heart?


  sinoatrial node (SA node)

  
• What is the function of the circulatory system?

  transport hormones