Final answer:
Dense regular connective tissue has closely packed, parallel collagen fibers and is found in tendons and ligaments.
Step-by-step explanation:
The connective tissue that contains closely packed bundles of collagen fibers running in the same direction is known as Dense regular connective tissue. This type of tissue has collagen fibers parallel to each other, which enhances tensile strength and resistance to stretching in the direction of the fiber orientations. It is found in structures such as tendons, which connect muscles to bones, and ligaments, which connect bones to each other.