MATCHING
Match term with correct characteristic.
-Associated with AV valves
A)gap junction
B)funny channels
C)functional syncytium
D)EDV
E)papillary muscles
F)second heart sound

Question

Quizplus · Accepted Answer

Papillary muscles are connected to the chordae tendineae which aid in the opening and closing of the AV valves.

Answer: D
 EDV stands for end-diastolic volume which is the volume of blood in the ventricles at the end of diastole (relaxation phase) just before the next contraction.

Answer: A
 Gap junctions are special intercellular connections that allow for rapid electrical signaling between cardiac muscle cells, which is important for coordinated contraction.

Answer: C
 Functional syncytium refers to the fact that cardiac muscle cells are electrically and mechanically connected, allowing for coordinated contraction of the heart.

Answer: F
 The second heart sound is associated with the closure of the aortic and pulmonary valves, which occurs at the beginning of diastole (relaxation phase) after the ventricles have emptied their contents into the respective arteries.

Answer: B
 Funny channels are ion channels found in the pacemaker cells of the sinoatrial node (SA node) that help generate the pacemaker potential, which is the spontaneous depolarization that initiates each heartbeat.

MATCHING Match Term with Correct Characteristic