Circulatory System (Vascular)

Question 1

The Heart

Answer 1

Transport system pump, and the blood vessels are the delivery routes. (two pumps- left and right side)

Question 2

Left Ventricle pump of the heart

Answer 2

Receives the oxygenated blood returning from the lungs and pumps this blood throughout the whole body to supply oxygen and nutrients to body tissues. “Systemic circuit”

Question 3

Systemic pump

Answer 3

The blood vessels that carry blood to and from all body tissues form the Systemic pump.

Question 4

Right Ventricle pump of heart

Answer 4

Receives oxygen-poor blood from body tissues and then pumps this blood to the lings to pick up oxygen and dispel carbon dioxide. “Pulmonary circuit”

Question 5

Pulmonary circuit

Answer 5

The blood vessels that carry blood to and from the lungs form the “Pulmonary circuit”

Question 6

Four Valves of the heart

Answer 6

Mitral valve, Tricuspid valve, Pulmonary valve, Aortic valve

Question 7

Endocardium

Answer 7

Thin, smooth membrane which lines the inside of the chambers of the heart and forms the surface of the valves.

Question 8

Left Atrium of the heart

Answer 8

The left atrium receives blood from the pulmonary (lung) circulation.

Question 9

Right Atrium of the heart

Answer 9

The right atrium receives blood from the venae cavae (venous circulation). The atria receive blood while relaxed (diastole), then contract (systole) to move blood to the ventricles.

Question 10

The Atria of the heart

Answer 10

The left atrium receives oxygenated blood from the lungs. The right atrium receives deoxygenated blood returning from other parts of the body. Valves connect the atria to the ventricles, the lower chambers.

Question 11

Blood Circulation of the heart

Answer 11

Both venae cavae empty the blood into the right atrium of the heart. From here the blood begins its journey through the pulmonary cycle. From the right atrium the blood descends into the right ventricle through the tricuspid valve.

Question 12

Crista Terminalas

Answer 12

The crista terminalis is generally a smooth-surfaced, thick portion of heart muscle in a crescent shape at the opening into the right atrial appendage. On the external aspect of the right atrium, corresponding to the crista terminalis is a groove, the terminal sulcus.

Question 13

Fossa Ovalis

Answer 13

During fetal development, the foramen ovale allows blood to pass from the right atrium to the left atrium, bypassing the nonfunctional fetal lungs while the fetus obtains its oxygen from the placenta. A flap of tissue called the septum primum acts as a valve over the foramen ovale during that time.

Question 14

Atrial-ventricular Bundle

Answer 14

The atrioventricular bundle is the extension of the atrioventricular node from the atrium across the fibrous skeleton of the heart to the ventricles. It passes from the anterior and inferior part of the AVN as a group of specialized myocytes within an insulating sheath of connective tissue.

Question 15

Tricuspid Valve

Answer 15

The tricuspid valve is one of the two main valves on the right side of your heart. Normally, the tricuspid valve has three flaps (leaflets) that open and close, allowing blood to flow from the right atrium to the right ventricle in your heart and preventing blood from flowing backward.

Question 16

Bicuspid Valve

Answer 16

The mitral valve is also known as the bicuspid valve. This is one of the heart’s four valves that help prevent blood from flowing backward as it moves through the heart.

Question 17

Blood Circulation through the body

Answer 17

Blood comes into the right atrium from the body, moves into the right ventricle and is pushed into the pulmonary arteries in the lungs. After picking up oxygen, the blood travels back to the heart through the pulmonary veins into the left atrium, to the left ventricle and out to the body’s tissues through the aorta.

Question 18

The closing of the heart valves

Answer 18

Lub: closing of the AV valves
Dub: closing of SL valves

Question 19

(4) Layers of the heart (outside in)

Answer 19

Pericardium, epicardium, myocardium, endocardium

Question 20

Artioventricular valve

Answer 20

The atrioventricular valves are thin structures that are composed of endocardium and connective tissue. They are located between the atria and the ventricles. … It also prevents the back flow of blood as it is pumped from the right atrium to the right ventricle.

Question 21

Semilunar valve

Answer 21

The valve between the left ventricle and the aorta is the aortic semilunar valve. When the ventricles contract, atrioventricular valves close to prevent blood from flowing back into the atria. When the ventricles relax, semilunar valves close to prevent blood from flowing back into the ventricles.