Pathophysiology of the heart II

This/these are located in the ventricles of the heart.  They attach to the cusps of the atrioventricular valves via the chordae tendineae and contract to prevent inversion or prolapse of these valves on systole.

• Interventricular septum
• Papillary muscles
• Chordae tendineae
• Atrioventricular groove/sulcus

This structure is on the outside of the heart and supplies blood to the myocardium.  

• Auricles
• Left and right coronary arteries
• Pericardium
• Interventricular groove or sulcas

The term that means heart contraction is ________.

• diastole
• systole
• tachycardia
• fibrillation

During artrial systole, the ventricles are

• in systole

• in diastole

• contracting

• not filling

Which component of ECG cycle shows ventricular depolarisation?

• P

• QRS

• T

• U

This wave indicates repolarisation of ventricles

• T waves

• U waves

• P waves

• Q waves

Roy has a strong family history of heart disease, what can Roy do to decrease his risk of developing heart disease?

• weight control
• diet low in fat
• exercise
• all of the choices

Which of the following factors cannot be controlled but do influence the risk of developing atherosclerosis and heart disease?

• Diabetes
• family history
• weight
• smoking

What fibres allow the ventricles to contract?

• SA
• AV
• Purkinje
• Bundle of His

What is the definition of the Cardiac Cycle?

• the contraction of the atria
• the sequence of events that occur during one complete heartbeat
• the contraction and relaxation of the ventricles
• the circulation of blood in the heart