Cardiovascular Physiology Flashcards Preview

A&P2 Lab Quizes > Cardiovascular Physiology > Flashcards

Flashcards in Cardiovascular Physiology Deck (19):
1

The "lub" sound indicates what? 

The closing of the VA valves.

2

The "Dub" sound indicates what?

The closing of the semilunar valves.

3

The __________ contracts independently of the nervous system?

Myocardium

4

______________ are gap junctions that connect cardiac muscle cells and allow it to beat and contract as one unit?

Intercalated discs

5

Name 5 non-contractile cells within the heart that stimulate a synchronized heart rythum:

  1. SA (Sinoatrial node)
  2. AV (Atrioventricular node)
  3. AV Bundle
  4. Bundle branches
  5. Purkinje Fibers

6

Know as the "pacemaker of the heart.

SA (Sinoatrial) node

7

Functions as a relay point that delays the contraction of the ventrical.

AV (atrioventicular) node

8

Only place within the heart where there is a connection between atria and ventricles.

AV Bundle

9

Extends through the interventricular septum.

Bundle branches

10

Travel through the ventricular wall.

Purkinje Fibers

11

Name 7 controls on heart rate:

  1. Autonomic Nervous System (parasympathetic and sympathetic)
  2. Hormones (epinephrine, thyroid hormone)
  3. Electrolytes (Ca, Na, K)
  4. Age
  5. Gender
  6. Fitness level
  7. Body Temperature

 

 

12

Records the electrical activity of the heart.

Electrocardiogram (ECG)

13

ECG stands for what recording of electrical heart activity?

 SPELL IT!

Electrocardiogram

14

Ventricular contraction is known as __________?

Systole

15

Ventricular relaxation is known as _________?

diastole

16

Name the three wave of the cardiac cycle:

  1. P wave
  2. QRS complex
  3. T wave

17

What event occures during the P wave?

Atrial depolarization (contraction)

18

What event occures during the QRS complex?

Ventricular depolarization (contraction)

19

What event occurs during the T wave?

  1. Ventricular repolarization (relaxation)