5 Written questions
5 Matching questions
- Pericardium/ Pericardial sac
- Voltage-gated Na+ channels
- Artificial Pacemaker
- relative refractory period
- a is an instrument, placed beneath the skin, equipped with an electrode that extends to the heart and provides an electrical stimulus at a set frequency.
- b membrane channels open, bringing about the depolarization phase of the action potential.
- c is a double-layered, closed sac that surrounds the heart. It consists of the fibrous pericardium and the serous pericardium.
- d is an inflammation of the serous pericardium.
- e The cell is sensitive to stimulation, but a greater stimulation than normal is required to cause an action potential. Portion of the action potential following the absolute refraction period during which another action potential can be produced with a greater-than-threshold stimulus strength.
5 Multiple choice questions
- is the total resistance against which blood must be pumped.
- or minute volume, is the amount of blood pumped by the heart per minute.
- helps reduce friction as the heart moves within the pericardial sac.
- Separates the 2 atria
- a tough, fibrous connective tissue outer layer.
5 True/False questions
Aortic Semilunar Valve → is located in the aorta.
Atria → thin- walled, form the superior and posterior parts of the heart.
Foramen ovale → The extent to which the ventricular walls are stretched.
Transverse (T) tubules → are cone-shaped, muscular pillars within each ventricle. These muscles are attached to chordae tendineae.
Epicardium → (visceral Pericardium), is a thin serous membrane that constitutes the smooth, outer surface of the heart. Also called the serous pericardium.