21. Electrical impulses from the brain stimulate each heartbeat a. True or b. False

22. An (arrhythmia/erythema) is an abnormal heart rhythm

23. The two major body cavities are
a. Dorsal and ventral
b. Cranial and abdominopelvic
c. Thoracic and vertebral

24. The part of the blood that causes clotting when an injury occurs is
a. Leukocytes
b. Eosinophils
c. Thrombocytes

25. Blood cells that transport oxygen and carbon dioxide are
a. Leukocytes
b. Basophils
c. Erythrocytes

Will Give quick answer thats corrcet