Use your notes over the Electrical Activity of the Heart to help you with these questions.
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Use your notes over the Electrical Activity of the Heart to help you with these questions.
Questions will not automatically regrade.
Once you submit your first attempt, check your score.
If below an 80%, reattempt them.
All correct answers are saved from the first attempt.
Up to 4 total attempts - 85% is highest score possible on attempts 2-4.
Don't have your notes? Go here.
Sequence the steps of electrical signal initiation and conduction.
AV Node
Conducting Cells of Atria
Internodal Pathways of the Atria
Bundle Branches Move Through the Interventricular Septum to a 180-Degree Turn
SA Node
Left and Right Bundle Branches
Bundle of His
Atrioventricular Septum (signal pause)
Purkinje Fibers
What factors can increase the sinus rhythm of the heart?
Which hormones can elevate the heart's sinus rhythm?
Which conditions are associated with a faster sinus rhythm?
The electrical impulse pauses just prior to the
Normal rhythmic beating of the heart is referred to as
Other than hormones and physiological conditions, the
The
Which ions lead to the formation of electrical signals in the heart?
What input prevents our resting heart rate from being extremely high?
Organize each of these in the following three categories
Thyroxine
Parasympathetic Nerves
Purkinje Fibers
SA Node
Hypothermia
Sympathetic Nerves
Adrenaline
Norepinephrine
Hyperthermia
Epinephrine
ANP
Acetylcholine
Dehydration
Increases Heart Rate
Decreases Heart Rate
Neither Increases and Decreases Heart Rate
| Přetahovatelná položka | arrow_right_alt | Odpovídající položka |
|---|---|---|
Electrical Impulses | arrow_right_alt | Pacemaker of the heart |
Autonomic Nervous System (ANS) | arrow_right_alt | Non-conductive tissue preventing disorganized impulses |
Atrioventricular Septum | arrow_right_alt | Hormone that increases heart rate |
Myocardial Conducting Cells | arrow_right_alt | Fibers that supply the ventricles with electrical impulses |
Acetylcholine | arrow_right_alt | Makes up 1% of myocardial tissue |
Sinoatrial (SA) Node | arrow_right_alt | Receives the impulse from the AV node |
Purkinje Fibers | arrow_right_alt | Part of the nervous system regulating heart rate |
Bundle Branches | arrow_right_alt | Hormone that decreases heart rate |
Epinephrine | arrow_right_alt | Signals generated by ion movement |
Bundle of His | arrow_right_alt | Divides into two |