Explain why empty veins collapse while empty arteries do not.

Q: Explain how blood pressure and resistance to flowchange as blood flows through the blood vessels.

A: Blood flow through a vessel, tissue, or organ is initiated by the contraction of the ventricles of…

Q: Explain how blood in the veins is returned to the heart

A: The vessels present in the circulatory system and help in the blood transport in the heart are…

Q: Explain how the histological structure of large arteries relates to their ability to stretch during…

A: The cells of the biological unit of life. the cells comprise tissues which collectively forms an…

Q: Explain the factors that regulate the volume of blood flow.

A: Blood is the significant fluid circulating in our body. It has numerous functions inside the body as…

Q: Explain the major function of the veins?

A: Heart pumps blood through a system of blood vessels, called the circulatory system. The heart is a…

Q: Explain why valves are needed in the veins.

A: Veins are the vessels of the human circulatory system that helps to transport the deoxygenated blood…

Q: Explain why the structure of the veins is different from that of the arteries.

A: CRITERIA                                   ARTERY                           VEIN…

Q: Explain why arterial blood flow is pulsatile and venous flow is not.

A: The cardiovascular system is also called the blood vascular or circulatory system, consists of a…

Q: Explain the relationship between cross-sectional areaof blood vessels and the rate of blood flow.

A: The circulatory system, also known as the cardiovascular or vascular system, is an organ system that…

Q: Explain why the narrow diameter of capillaries is critical to their function.

A: Ans: Capillaries: The small or tiny blood containing structures that joins the arterioles to venules…

Q: Describe the relationship between blood pressure and the total cross-sectional area of arteries,…

A: Human heart is the Center for regulating blood across the body. It is made up of cardiac Muscles…

Q: Describe the influence of gravity on blood flow

A: The major part of the human circulatory system, that is, heart is responsible for the pumping of…

Q: Explain why are capillaries thin walled?

A: Capillaries are small blood vessels found throughout the entire body. They play an important role in…

Q: Explain why a blood vessel with a large internal diameter has more difficulty contracting than a…

A: Blood vessels are components of the circulatory system that transport blood throughout the human…

Q: blood

A: In blood vessels, there is a fundamental relationship between pressure, resistance, and flow,…

Q: Blood flow within the capillaries is slower than within arterial or venousvessels. Explain why this…

A: The cardiovascular system provides blood supply throughout the body. The cardiovascular system…

Q: Describe how blood is carried towards the veins. What keeps blood moving in a forward direction in…

A: Veins are thin walled blood vessels that carry deoxygenated blood to the heart for oxygenation.…

Q: Explain how veins serve as a blood reservoir for the cardiovascular system.

A: The blood is a vital connective tissue with cells suspended in a liquid matrix called the plasma.…

Q: Explain why blood flows in arteries in spurts and is under pressure.

A: The circulatory system is one of the most essential systems in the body. The function of the…

Q: Explain the process of ion, blood and fluid exchange in the capillaries

A: Capillary is a tiny blood vessel with a diameter of 5 to 10 micrometres. They transport blood…