Human Circulatory System

The ovaries are supplied by the ovarian arteries which branch directly off of the aorta just below the renal arteries.

Transfusion tissue serves the function of veins in cycas.

It is a conical extension of right ventricle in the heart of mammals from which pulmonary artery originates.

Absence of muscular coat

Causes oedema

One quarter of the total blood output from the heart comes to the kidneys along the renal artery. Two renal arteries arise from the abdominal section of the aorta, each artery supplies a lobe of the kidney. The incoming artery divides into four or five branches, eventually forming arterioles, each of which leads to the compact ball of capillaries called the glomerulus.

This answer is correct. Angina is caused by reduced blood flow to the heart muscle. The blood carries oxygen which is needed by the heart muscle in order to survive.

This answer is correct. The heart is the central pumping organ of the blood vascular system. The pure blood is pumped from here and impure blood is pumped back, i.e. the control of blood circulation is carried out from the heart. Hence, it works like a central power station of the body.

This is the correct answer. The right ventricle pumps blood into the pulmonary trunk, which divides into the pulmonary arteries going to the lungs; then blood is returned to the left atrium from the lungs through the pulmonary veins. This is called the pulmonary circulation. Hence, this part is not involved.

This answer is correct. The left ventricle ejects blood into the aorta, which further supplies the blood via arteries to tissues and organs(except the lungs).

This answer is correct. The blood does not remain confined to blood vessels, but it flows freely through the body cavity and channels called lacunae and sinuses in the tissues.

This answer is the correct path. Tissue fluid enters tiny channels called lymph vessels, which ultimately drain into two large lymph vessels called thoracic duct and the right lymphatic duct. These open into veins returning the lymph finally into venous blood and thus, in the general circulatory system.

This is the correct answer. The blood pressure is low in veins because the blood flows through narrow arterioles and capillaries to enter wider veins. There are many valves inside the veins. These valves permit the flow of blood in the veins towards the heart and prevent blood flow in the reverse direction.

Transplantation refers to the surgical procedure of transferring organs, tissues, or cells from one body to another or within the same body. Common examples include kidney, liver, and heart transplants. While blood transfusions and cell transplants exist, the term typically refers to whole organs.