Labs 3 & 4

Heart conduction

100

There is a .1 second delay between these two nodes to prevent from contraction of the heart chambers at the same time.

Sinoatrial (SA) and atrioventricular (AV) nodes

200

An increase in cell membrane potential/charge caused by the flooding of Na⁺ ions.

Depolarization

300

Depolarization of the ventricles starts at this structure of the heart.

Apex

400

These structures allow for rapid depolarization and repolarization across myocardial cells.

Gap junctions

500

These structures conduct impulses through the interventricular septum.

Bundle branches

ECG

100

An ECG records these events in the heart.

Electrical activity

200

The P wave is the result of this event in the heart.

Atrial depolarization

300

The QRS complex is the recording of this event in the heart.

Ventricular depolarization

400

An elevated R wave is the result of what?

Enlarged ventricles

500

An elevated S-T segment may indicate this clinical condition.

Myocardial infarction (heart attack)

Blood Pressure

100

Systolic BP represents this event of the heart chambers.

Ventricular contraction

200

The SECOND heart sound is the result of this event in the heart.

Closing of the semilunar (SL) valves

300

A BP test is taken at this artey.

Brachial artery

400

The status of the ventricles during passive filling.

Systole (relaxed)

500

The first audible sounds during a BP test is known as this.

Systolic BP

Vessels

100

1

Common carotid arteries

200

2

Ciliac trunk

300

3

Popliteal vein

400

4

External jugular vein

500

5

Inferior mesenteric artery

Word List

100

hypo-

Under; below

200

auto-

Self

300

crani-

Skull

400

esthe-

Sensation

500

rigor-

Stiffness