VEIN is a post-apocalyptic survival multiplayer sandbox game. Gather supplies to survive, explore abandoned buildings, defend your home, and rebuild society, whether alone or with friends.

Structure of a vein, which consists of three main layers: an outer layer of connective tissue, a middle layer of smooth muscle, and an inner layer lined with endothelium. A vein (/ veɪn /) is a blood vessel …

What are veins made of? Each vein is made of three layers of tissues and fibers: The tunica adventitia (outer layer) gives structure and shape to your vein. The tunica media (middle layer) contains smooth …

The meaning of VEIN is blood vessel; especially : any of the tubular branching vessels that carry blood from the capillaries toward the heart. How to use vein in a sentence.

Sep 13, 2024 · Veins are divided into four types: pulmonary, systemic, superficial, and deep veins. Veins have three layers: an outer, middle, and inner layer that help them transport blood efficiently. Veins …

Jan 21, 2026 · ‌Arteries and veins (also called blood vessels) are tubes of muscle that your blood flows through. Arteries carry blood away from the heart to the rest of the body. Veins push blood back to...

Vein, in human physiology, any of the vessels that, with four exceptions, carry oxygen-depleted blood to the right upper chamber (atrium) of the heart. The four exceptions—the pulmonary veins—transport …

Veins have one-way valves inside that allow for blood flow to move toward the heart. Veins contain only smooth muscle cells. These muscle cells reside within the tunica media along with elastic fibers and …

Veins are blood vessels that transport deoxygenated blood to the heart from various parts of the body. Explore how different veins look and work.

Aug 3, 2023 · Veins are the blood vessels that collect the deoxygenated blood from the various tissues and organs of the body and transport it back to the heart. The blood vessels that carry blood toward …