Which of the following options correctly describes the features of arteries?

Question

Question

This question was previously asked in

RRB Group D 8 Sept 2022 Shift 3 Official Paper

Thick walls, blood flows under low pressure, collect blood from different parts of the body
Thick walls, no valves, blood flows under high pressure, carry blood to different parts of the body
Thin walls with valves, blood flows under low pressure, collect blood from different parts of the body
Thin walls with valves, blood flows under high pressure, carry blood to different parts of the body

Answer 1

The correct answer is Thick walls, no valves, blood flows under high pressure, carry blood to different parts of the body.

Key Points:

Blood flows through the arteries.
Most transport oxygen-rich blood away from the heart while delivering it to various organs and tissues.
Arteries are a part of circulatory system, along with heart and the other blood vessels.
The blood in arteries is typically oxygenated.
As opposed to the pulmonary artery, which transports deoxygenated blood to the lungs for oxygenation, the pulmonary vein transports oxygenated blood back to the heart, where it is subsequently dispersed to rest of body through other arteries.
Unlike arteries, which direct blood away from the heart, veins direct blood toward the heart.
Because the arteries experience higher pressures than other blood vessels, they are often thicker and more elastic.

Additional Information:

Normally, an artery has three layers:
Tunica intima:
- The innermost layer of this layer is made up of elastic membranes and tissues that support healthy blood flow.
Tunica media:
- This layer is the middle and thickest.
- There is elastin and smooth muscle.
Tunica adventitia:
- Elastin and collagen fibres make up the tunica adventitia, which adds strength.
- This layer also enables the dilation and widening of arteries, which is essential for controlling blood pressure.