Refer to Map (In the Textbook) 21

question 43

Essay

Refer to Map (in the textbook) 21.1 and trace the expeditions of the Manchurians into neighboring areas. What political and military advances did they make, and what was accomplished?

---

Definitions:

Interstitial Fluid

The fluid that surrounds the cells in tissues and is exchanged with the blood, providing nutrients and removing waste materials.

Pacemaker

A device implanted in the chest to regulate the heartbeat.

Atrioventricular Node

A part of the cardiac conduction system that coordinates the top heart chambers (atria) contraction with the bottom chambers (ventricles) ensuring a synchronized heartbeat.

Lymph Tissue

Specialized connective tissue that contains large numbers of lymphocytes and is involved in the immune response and the maintenance of bodily fluids levels.