Lecture test H1: Multiple dhoice questions 1)The heart lies within the B cavity.
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Lecture test H1: Multiple dhoice questions 1)The heart lies within the B cavity. peritoneal pleural orbital D) dorsal The inferior point of the heart is called the apex. B) hilum. C) base. D) septum. receives blood from the superior vena cava and the inferior venacava. 3) The A) right ventricle B) left ventricle C) left atrium D) right atrium E) aorta 4) Muscular ridges on the inner surface of the ventricles are called A) coronary sinuses. B) trabeculae carneae. C) intercalated discs. D) papillary muscles. E) chordate tendinae. 5) The carry blood toward the heart. A) arterioles B) arteries D) lacteals capillaries lines the chambers of the heart, covers the heart valves, and is continuous with 6) The the endothelium. A) epicardium B) myocardium endocardium D) visceral pericardium E)Explanation / Answer
The heart lies within the pericardial cavity.
The pericardial cavity is a double layered sac that contains the pericardial fluid and one of the layer is called serous layer and fibrous layer.
The inferior point of the heart is called APEX.
It is formed by the left ventricle and directed downward , forward and the left.
The right atrium receives the blood from superior vena cava and inferior vena cava.
After that it transmits the blood to right ventricle and pump blood to the lungs for oxygenation process.
Muscular ridges on the inner surface of the ventricles are called trabeculae carneae.
Irregular muscular columns that are projected inner surface of the right and left ventricles of the heart.
The veins carry blood towards the heart.
Pulmonary veins deliver oxygen rich blood from lung to left atrium of the heart.
The endocardium lines the chambers of the heart, covers the heart valves and is continuous with the endothelium.
It is the innermost layer and connects to the myocardium through the connective tissue.
A procedure in which a length of veins or artery is used to create around detour around and obstruction in the coronary artey is called coronary arterial bypass graft.
CABG is used to treat the patients who are suffering with coronary artery disease.
It is caused by the waxy substance that builds up in the coronary arteries.
This treatment helpful in the easy flow of the blood .
The coronary sinus drains the cardiac veins into the right atrium.
Coronary sinus is formed of many veins they receive blood from the different cardiac veins and the blood get drained into the right atrium.
A slower-than- normal heart rate is called bradycardia.
It is the condition having the slow heart rate and that is under 60 beats per minute .
The events occur during the ventricular systole is expansion of ventricles.
During ventricular systole, the pressure rises in the left ventricle and when the pressure is greater than in the aorta.
11. Answer is D.
The end systolic volume is the amount of blood in a ventricle after it has contracted and before it begins to refill.
It is the lowest volume of blood in the ventricle at any point of the cardiac cycle.
12. Answer is C.
The extrinsic pathway of the coagulation is initiated by release of tissue factor ( factor III) by damaged endothelium.
The extrinsic pathway is a tissue factor pathway and it is to generate a thrombin burst.
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