Copy of Electrical Act of Heart Ques 1 (5/28/2026)

Last updated about 3 hours ago

14 questions

Note from the author:

Instructions

9

1

5

Library

Copy of Electrical Act of Heart Ques 1 (5/28/2026)

Last updated about 3 hours ago

14 questions

Note from the author:

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.

Instructions

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.

9

1

The electrical impulse pauses just prior to the _______  to allow for proper blood filling

1

_______ , released by parasympathetic nerves, serves to decrease heart rate.

1

_______  make up 99% of all myocardial tissue.

1

Normal rhythmic beating of the heart is referred to as _______ 

1

Other than hormones and physiological conditions, the _______ and _______ of the autonomic nervous system contribute to influence the heart rate.

1

The _______  is located in the inferior area of the right atrium

1

Which ions lead to the formation of electrical signals in the heart? _______ 

1

What input prevents our resting heart rate from being extremely high? _______ 

5

Draggable item		Corresponding Item

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.

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.

Conducting Cells of Atria
AV Node
Internodal Pathways of the Atria
Left and Right Bundle Branches
Bundle Branches Move Through the Interventricular Septum to a 180-Degree Turn
SA Node
Purkinje Fibers
Atrioventricular Septum (signal pause)
Bundle of His

What factors can increase the sinus rhythm of the heart?

Decreased body temperature

Sympathetic nervous system stimulation

High levels of carbon dioxide

Adrenaline release

Which hormones can elevate the heart's sinus rhythm?

Insulin

Adrenaline

Thyroid hormones

Cortisol

Which conditions are associated with a faster sinus rhythm?

Hypoglycemia

Fever

Severe dehydration

Chronically not having proper water intake

The electrical impulse pauses just prior to the _______  to allow for proper blood filling

_______ , released by parasympathetic nerves, serves to decrease heart rate.

_______  make up 99% of all myocardial tissue.

Normal rhythmic beating of the heart is referred to as _______ 

Other than hormones and physiological conditions, the _______ and _______ of the autonomic nervous system contribute to influence the heart rate.

The _______  is located in the inferior area of the right atrium

Which ions lead to the formation of electrical signals in the heart? _______ 

What input prevents our resting heart rate from being extremely high? _______ 

Increases Heart Rate
Decreases Heart Rate
Neither Increases and Decreases Heart Rate

Draggable item		Corresponding Item
Electrical Impulses		Pacemaker of the heart
Autonomic Nervous System (ANS)		Non-conductive tissue preventing disorganized impulses
Atrioventricular Septum		Hormone that increases heart rate
Myocardial Conducting Cells		Fibers that supply the ventricles with electrical impulses
Acetylcholine		Makes up 1% of myocardial tissue
Sinoatrial (SA) Node		Receives the impulse from the AV node
Purkinje Fibers		Part of the nervous system regulating heart rate
Bundle Branches		Hormone that decreases heart rate
Epinephrine		Signals generated by ion movement
Bundle of His		Divides into two

Sequence the steps of electrical signal initiation and conduction.

Conducting Cells of Atria

AV Node

Internodal Pathways of the Atria

Left and Right Bundle Branches

Bundle Branches Move Through the Interventricular Septum to a 180-Degree Turn

SA Node

Purkinje Fibers

Atrioventricular Septum (signal pause)

Bundle of His

What factors can increase the sinus rhythm of the heart?

Decreased body temperature

Sympathetic nervous system stimulation

High levels of carbon dioxide

Adrenaline release

Which hormones can elevate the heart's sinus rhythm?

Insulin

Adrenaline

Thyroid hormones

Cortisol

Which conditions are associated with a faster sinus rhythm?

Hypoglycemia

Fever

Severe dehydration

Chronically not having proper water intake

Organize each of these in the following three categories

Adrenaline

Hypothermia

Dehydration

Purkinje Fibers

Thyroxine

Hyperthermia

Parasympathetic Nerves

Epinephrine

Sympathetic Nerves

Acetylcholine

SA Node

ANP

Norepinephrine

Increases Heart Rate

Decreases Heart Rate

Neither Increases and Decreases Heart Rate

Electrical Impulses

Pacemaker of the heart

Autonomic Nervous System (ANS)

Non-conductive tissue preventing disorganized impulses

Atrioventricular Septum

Hormone that increases heart rate

Myocardial Conducting Cells

Fibers that supply the ventricles with electrical impulses

Acetylcholine

Makes up 1% of myocardial tissue

Sinoatrial (SA) Node

Receives the impulse from the AV node

Purkinje Fibers

Part of the nervous system regulating heart rate

Bundle Branches

Hormone that decreases heart rate

Epinephrine

Signals generated by ion movement

Bundle of His

Divides into two