Question

1. In an external feature called the interventricular groove lies an artery that sends off several branches on the surface of the heart. What is this artery called, and what can happen if it gets blocked?

2. When looking at an internal view of the bisected heart, you can distinguish the left ventricle from the right ventricle by the thick ____________ that surrounds the left ventricle.

3. Valves always lie between an atrium and a ventricle.  Both the right and left side of the heart have valves in this position.  What are two names for the valves on the right side of the heart?  What are three names for the valves on the left side of the heart?

4. The chordae tendineae are attached to which two valves?

5. List the four chambers of the heart in proper sequence beginning with the chamber where deoxygenated blood first enters and ending with the chamber where oxygenated blood is expelled from the heart.

6. What is the name of the artery that carries blood to both the head and the arms?

7. At the base (i.e. starting point) of the aorta lies the _______________ valve.

8. Name the veins that feed blood into the left atrium.  Do these carry oxygenated or deoxygenated blood?

Answer 1

ANS1) CORONARY ARTERY , the anterior interventricular branch of the left coronary artery runs in the sulcus along with the great cardiac vein.

HEART ATTACK , may occur if coronary artery is blocked.

Ans2) VENTRICULAR SEPTUM, it seperates left ventricle and right ventricles in such a way it forms a barrier between heart chambers this prevents mixing of oxygenated blood and deoxygenated blood.

Ans3) Tricuspid valve and pulmonary valve are on right side of the heart.

mitral valve , aortic valve and pulmonary valve are on left side of heart

Ans4) tricuspid and mitral valve , the chordae tendineae also known as heart strings are tendon resembling fibrous cords of connective tissue that connect papillary muscle to the tricuspid and mitral valve in the heart.

Ans5) 1 right atrium , where deoxygenated blood enter from inferior and superior vena cava.

2 right ventricles , the deoxygenated blood is filled by right atrium through tricuspid valve.and expelled to lungs through (pulmonary artery).

3 left atrium , where oxygenated blood is enter from pulmonary vein (lungs).

4 right atrium , oxygenated blood is filled from left atrium through mitral valve .and expelled to aorta .

Ans6) brachiocephalic artery , which itself is divided into carotid artery and subclavian artery these arteries provide blood to both head and arms.

Ans7) SEMILUNAR VALVE , lies at the base of the aorta.

Ans8) PULMONARY VEIN , it carry oxygenated blood .it is the only vein that carry pure blood .