N
O
TI
LU
SO
ST
TE
, N
O
TI
LU
SO
ST
TE
, N
O
TI
LU
SO
ST
TE
, TREW
14) Which of the following best explains the mechanism called irritability?
A) The ventricles repolarize before they are ready.
B) The normal pacemaker slows down and gives up control.
C) A lower pacemaker site speeds up to take control of the heart.
D) The normal pacemaker changes its inherent rate.
Answer: C
Page Ref: 7
Learning Obj.: 1.4
TE
15) Which of the following does NOT happen when the sympathetic branch is stimulated?
A) Heart rate increases.
B) The heart becomes more irritable.
C) Impulses go faster through the AV node.
D) Ventricular conduction slows down.
ST
Answer: D
Page Ref: 8
Learning Obj.: 1.4
SO
LU
TI
O
N
TREWQ
O
TI
LU
SO
ST
TE
, N
O
TI
LU
SO
ST
TE
, N
O
TI
LU
SO
ST
TE
, TREW
14) Which of the following best explains the mechanism called irritability?
A) The ventricles repolarize before they are ready.
B) The normal pacemaker slows down and gives up control.
C) A lower pacemaker site speeds up to take control of the heart.
D) The normal pacemaker changes its inherent rate.
Answer: C
Page Ref: 7
Learning Obj.: 1.4
TE
15) Which of the following does NOT happen when the sympathetic branch is stimulated?
A) Heart rate increases.
B) The heart becomes more irritable.
C) Impulses go faster through the AV node.
D) Ventricular conduction slows down.
ST
Answer: D
Page Ref: 8
Learning Obj.: 1.4
SO
LU
TI
O
N
TREWQ
