Multiple Choice
A dual-chamber pacemaker is surgically placed in a patient's chest.Wires then carry pulses to the right atrium and the right ventricle.Why would the pulses be carried to the right chambers of the heart and not the left chambers?
A) The left chambers are reduced or absent in many subadults.
B) The right chambers of the heart are weaker and need more stimulation.
C) Only the right chambers of the heart need to contract to move blood to the lungs.
D) It is easier to run the wires from the pacemaker through the vena cava.
E) Once the right chambers are activated the pulse will be carried to the left chambers.
Correct Answer:
Verified
Correct Answer:
Verified
Q57: If blood pressure is too high,the brain
Q58: You are a medical student on rounds
Q59: A dual-chamber pacemaker is surgically placed in
Q60: At the capillaries,_ leaves red blood cells
Q61: How do ice fish transport oxygen in
Q63: Ice fish would have which kind of
Q64: What mutations occurred in most ice fish
Q65: Which is a trend observed in the
Q66: A whole blood cell transfusion would be
Q67: A cut is made into the tissue