Panama is considered isthmus or a narrow strip of land that connects two larger landforms.
Step-by-step explanation:
Isthmus is a narrow strip or neck of land, joined on both sides by water, uniting two more extensive land areas, as a peninsula and the continent (e.g., Isthmus of Suez) or two continents (e.g., Isthmus of Panama). Isthmus of Panama, one can understand whereby that neck-like bit of land divides the Caribbean Sea from the North Pacific Ocean as it connects North and South America. The Greek isthmus implies "neck," so one can see whereby isthmus came to indicate the joining strip between landmasses.