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________ and respiratory movements move lymph upward through lymphatic vessels and trunks below the heart.

The pulmonary veins carry _________ blood to the _________.

Which of the following structures is NOT a part of the larynx?

Lymphocytes originate in _________ and, after maturation, move into _________ where they divide to produce large populations.

The visceral layer of serous pericardium is also known as ______.

The protein responsible for helping break down clots after they are no longer needed is __________.

A woman with Rh- blood does not have anti-Rh antibodies in her blood unless ______.

The layers of the alimentary canal, from outside to inside, are the __________.

Which of the following is NOT an accessory organ to the digestive system?

Materials moving between body cells and blood capillaries pass through the _________, which surrounds all tissue cells.