Mapping the Locations of North American Native Tribes Is Difficult

question 6

Multiple Choice

Mapping the locations of North American native tribes is difficult for all of the following reasons, EXCEPT

• A) Tribes such as the Navajo and Apache migrated considerable distances both before and after their encounter with Europeans.
• B) Maps mark tribal locations at the time of their first encounter with Europeans only.
• C) First contacts with Europeans took place over the stretch of several centuries, which leads to a chronological skewing of maps.
• D) Native tribes rarely knew their geographical locations.
• E) In the mid-Atlantic and southeastern regions pre-Columbian conflicts had scrambled tribes into a various groups that are virtually impossible to trace.

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Definitions:

Precapillary Sphincter

A ring-like muscle at the entrance of capillaries that regulates blood flow into the capillary.

Atrial Natriuretic Hormone

A hormone, secreted by heart's atria, that regulates blood pressure by reducing sodium ion concentration in the blood, thus decreasing blood volume.

Vasopressin

A hormone produced by the pituitary gland that helps regulate water balance in the body and constriction of blood vessels.

Angiotensin II

A peptide hormone that causes blood vessels to constrict, increasing blood pressure.