Consider the following statements about arteries A. Arteries are the blood vessels which carry oxygen rich blood from the heart to all parts of the body at a high pressure B. To ensure that the blood flows only from the heart to other body parts, the arteries have valves C. The walls of the arteries are comparatively thin The correct statement is/are?

Option 1 : Only A

Concept;

• The organ system of human beings or other organisms which is responsible for the transport of materials inside the body is called the circulatory system.
• Our circulatory system consists of a muscular pumping organ called the heart, arteries, veins, capillaries, and blood.
• The heart has two atria and two ventricles.
• The heart acts as a pump to push out blood. 
• The arteries, veins, and capillaries act as tubes or pipes through which blood flows. These tubes which carry blood are called blood vessels.
• Arteries carry oxygenated blood away from the heart except the pulmonary artery carries deoxygenated blood.
• Veins carry deoxygenated blood away from the heart except the pulmonary veins carry oxygenated blood.

Explanation:

• Arteries are blood vessels that carry oxygen-rich blood from the heart to all parts of the body.
• Blood flows with high pressure.
• Arteries have thick walls and a narrow lumen.
• Arteries do not have valves.
• Arteries are found deeper in the tissues.

Thus, from the above discussion, it is clear that only statement A is correct.

Open circulatory system:

• In an open circulatory system, the blood is not enclosed in the blood vessels and bathes the organs and tissues directly
• there is no distinction between blood and interstitial fluid
• Ex. Spiders, cockroaches, and prawns

Closed circulatory system:

• the heart pumps blood through vessels that are separate from the interstitial fluid of the body
• The blood vessels are found throughout the body and form the plumbing circuit of the body.
• Ex. Rabbit, Lion, Whale