***Factors influencing Cardiac Filling

Question 1

Cardiac filling and Venous return are ____ _____.

Answer 1

• directly proportional

Question 2

What are vis-a-tergo forces?

Answer 2

• ventricular contraction in closed loop
• return blood to heart (push from behind)

Question 3

What is central venous pressure?

Answer 3

• skeletal muscle pump that compresses venous ventricle (returns blood to heart)

Question 4

What is Vis-a-fronte forces?

Answer 4

• aspiration filling, in front and PULLS

Question 5

How does Vis-a-fronte force work?

Answer 5

• fish heart is in a rigid box (like pericardial chamber)
• contraction of ventricle makes neg pressure that expands SV and A to draw blood in