Question

using the word bank provided, label the heart’s conduction system. note: to complete this question without using the drag-and-drop feature, first click on a single answer choice from the answer choice list, then click on the response container you wish to answer. (using a screen reader? use the tab key to navigate to an answer choice. answer choices can be selected and unselected using the enter key. to deselect the selected answer, press the enter key again. to complete this question while using a screen reader, use the tab key to navigate to the response container you wish to place the selected answer into. press the enter key to place the selected answer into the response container. the word bank includes: sa node, av node, purkinje fibers)

Explanation:

The heart's conduction system components are SA Node (sinoatrial node, the natural pacemaker), AV Node (atrioventricular node, delays impulse), and Purkinje Fibers (spread impulse to ventricles). To label, identify the positions: the top yellow dot is SA Node (initiates rhythm), the middle yellow dot is AV Node (transmits from atria to ventricles), and the networked fibers are Purkinje Fibers (ventricular conduction).

Answer:

From left to right (or as per the diagram's labels):

1. (First blank, likely Purkinje Fibers) - Purkinje Fibers (conducts impulses to ventricular muscle)
2. (Middle blank, likely AV Node) - AV Node (delays and relays impulse from atria to ventricles)
3. (Top blank, likely SA Node) - SA Node (sinoatrial node, initiates electrical impulses)