The Heart and Circulation

The outermost layer of the heart is the...?

• Epicardium

• Ectocardium

• Myocardium

• Endocardium

The pulmonary and aortic valves are collectively known as the.....?

• AV valves

• Pacemaker

• Mitral valves

• Semilunar valves

The heart can be found in which mammalian body cavity?

• Thorax

• Mediastinum

• Abdomen

• Coelem

A pulse deficit is when....?

• More femoral pulses can be felt than heart beats

• The number of pulses felt is less than the number of heart beats

• An animal has no pulse

• A pulse is weak

The pacemaker of the heart is the.....?

• Atrioventricular node

• Interventricular septum

• Aorta

• Sinoatrial node

The mitral valve is an alternate name for the....?

• Right AV valve

• Left AV valve

• Tricuspid valve

• Pulmonary valve

Systolic pressure is ....?

• The pressure when the heart contracts

• The pressure when the heart relaxes

• The average pressure of contraction and relaxation

• Difficult to measure

The receptors found in the aortic arch which detect blood pressure are known as....?

• Chemoreceptors

• Thermoreceptors

• Baroreceptors

• Pressure receptors