← Heart, Fats, and Circulation

Chart 27-4 · 13 min

Lub and dub

A read of this page, with the plate.

Picture-lock · 0.9×
Banner: the heart — four chambers
Banner. CX is the cover. Ask whether you are all alone in the auric field.Illustration · site art, not a Kapel Draw.
Chart 27-4: heart internal, chambers, mitral, ventricles
Chart 27-4. Same nerves as 27-3, now the rooms. Right ventricle, left ventricle. Bicuspid mitral valve. Vena cava. Bundle of His. Baroreceptors.CGI copy of her Draw · Atlas keeps the original.

The rooms. Atria wait. Ventricles squeeze. Tricuspid on the right. Mitral on the left. Lub is the first sound: AV valves close as systole begins. Dub is the second: semilunar valves close at the end of systole. Right side to the lungs. Left side to the body. The left wall is thicker. Chest pain, a collapse: you stop.

Practice

Name waiting rooms, power rooms, lub, dub. Keep left to the body. If the chest is pressure, you stop.

Check

The thicker wall is taught as:

  1. The right — as the outline wrote
  2. The left — Ari revises; it pumps to the body ✓
  3. Both equal so a dose you write looks tidy

Keep the map.

Lub on this hour is:

  1. Ventricular filling — atria finish the last third
  2. AV valves closing as systole begins — first sound ✓
  3. Semilunar closing

S1. Filling is not this sound.

Dub on this hour is:

  1. AV valves closing
  2. Semilunar valves closing at the end of systole — second sound ✓
  3. Filling

S2. Not both closures on one board.

Tricuspid sits:

  1. Left, two flaps
  2. Right, three flaps — body-blood into the right power room ✓
  3. On the aorta

That's the work.

Mitral sits:

  1. Right, three flaps
  2. Left, two flaps — lung-blood into the left power room ✓
  3. On the cava

That's the work.

Waiting rooms are:

  1. Ventricles
  2. Atria — upper ✓
  3. Baroreceptors

Blood waits.

Power rooms are:

  1. Atria
  2. Ventricles — the squeeze ✓
  3. The intima

That's the work.

Systole is:

  1. The rest
  2. The squeeze ✓
  3. Filling

Diastole is the rest.

If the chest is pressure on lub-dub:

  1. You prescribe taurine
  2. You stop ✓
  3. You wait for the artery hour

The stop.

Right ventricle pumps:

  1. To the body
  2. To the lungs ✓
  3. To the ileum

Keep the map.