All of the following factors normally increase the length of the ventricular cardiac muscle fibers except:

Increased negative intrathoracic pressure.

Lying-to-standing change in posture.

All of the following factors normally increase the length of the ventr

1.	All of the following factors normally increase the length of the ventricular cardiac muscle fibers except:
A.	Increased negative intrathoracic pressure.
B.	Lying-to-standing change in posture.
C.	Increased venous tone.
D.	Increased total blood volume.
Answer» C. Increased venous tone.