____________________ Are Structures in Veins That Prevent the Blood from Flowing

question 135

Short Answer

____________________ are structures in veins that prevent the blood from flowing backwards.

---

Definitions:

Native Tribes

Indigenous peoples with distinct cultures, languages, and traditions, often associated with a specific territory or geographic area.

Great Plains

A broad, flat region in the United States characterized by its extensive grasslands, stretching from the Mississippi River to the Rocky Mountains.

Reservation Policy

A policy regarding the designation of specific territories exclusively for Native American tribes, often associated with forced relocations and cultural disruption.

Assimilation

The process by which individuals or groups of differing ethnic heritage are absorbed into the dominant culture of a society.