The T wave of an ECG is produced by the ______.

Which of the following would be least helpful if you needed to quickly escape from an angry alligator?

Each lung has only one ______.

The pulmonary arteries carry _________ blood to the _________.

In a blood transfusion, one must consider the ________ of the donor and the _______ of the recipient.

The pulmonary veins carry _________ blood to the _________.

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

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 ______.