First Aid - Anatomy and Physiology, RCT trainers | Attempts: 179

2.

How many chambers does the heart have?

2
4
6
8

Correct Answer

A. 4

Explanation

The heart has four chambers, which are the left and right atria and the left and right ventricles. The atria receive blood from the veins and pump it into the ventricles. The ventricles then pump the blood out of the heart and into the arteries. This four-chambered structure allows for efficient separation of oxygenated and deoxygenated blood, ensuring that oxygen-rich blood is delivered to the body's tissues and organs.

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3.

What controls the timing of your heartbeat?

Heart pressure
Heart muscles
Heart's electrical system
Normal steady heartbeat

Correct Answer

A. Heart's electrical system

Explanation

The timing of the heartbeat is controlled by the heart's electrical system. This system includes specialized cells that generate electrical signals, which travel through the heart and regulate the contraction and relaxation of the heart muscles. These electrical signals ensure that the heart beats in a coordinated and rhythmic manner, pumping blood effectively throughout the body. Any disruption or abnormality in the heart's electrical system can lead to irregular heartbeats or arrhythmias.

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4.

What is the "heart rate"?

A test for blood pressure build up
The number of times your heart beats a minute
The synchronised pumping action of your heart chambers
A test to seeif your heart is healthy

Correct Answer

A. The number of times your heart beats a minute

Explanation

The correct answer is "the number of times your heart beats a minute." Heart rate refers to the number of times the heart contracts or beats in a span of one minute. It is commonly measured as beats per minute (BPM) and is an essential indicator of cardiovascular health and fitness level. Monitoring heart rate can provide valuable information about the efficiency of the heart's pumping action and overall cardiac function.

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5.

The eletrical signal travels through the network of conducting cell"pathways" It starts in a group of cells at the top of your heart called

Correct Answer
sinoatrial node SA

Explanation
The electrical signal that initiates the heartbeat travels through a network of conducting pathways in the heart. This signal starts in a group of cells located at the top of the heart called the sinoatrial node (SA node). The SA node acts as the natural pacemaker of the heart, generating electrical impulses that regulate the heart's rhythm. These impulses then spread through the atria, causing them to contract and pump blood into the ventricles. From there, the signal travels to the atrioventricular node (AV node) and then to the rest of the heart, coordinating the contraction of the ventricles and ensuring efficient blood circulation.

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6.

When the SA node" fires" it triggers the following process

TrueThe electrical signal travels from your SA node through muscle cells in your right and left atria
False The electrical signal travels from your SA node through muscle cells in your right and left ventricles

Correct Answer

A. TrueThe electrical signal travels from your SA node through muscle cells in your right and left atria

Explanation

The SA node, also known as the sinoatrial node, is responsible for initiating the electrical signals that regulate the heartbeat. When the SA node "fires," it triggers a series of events that cause the atria, the upper chambers of the heart, to contract. The electrical signal travels through muscle cells in the right and left atria, causing them to contract and pump blood into the ventricles. Therefore, the correct answer is that the electrical signal travels from the SA node through muscle cells in the right and left atria.

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7.

Where is the AV "Atrioventricular" node

Left ventricle
Right atrium
Right ventricle
Left atrium

Correct Answer

A. Right atrium

Explanation

The AV (Atrioventricular) node is located in the right atrium. It is a small bundle of specialized cells that acts as a bridge between the atria and ventricles in the heart. It receives electrical signals from the atria and delays them before transmitting them to the ventricles, allowing for coordinated contraction and efficient pumping of blood.

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8.

What is the "bundle of His"?

The heart's pacemaker
Conduction cells which respond to the electrical signal from the atrioventricular node
Male electrical cells that pump the heart
The cells inside the sinoatrial node that create the heartbeat

Correct Answer

A. Conduction cells which respond to the electrical signal from the atrioventricular node

Explanation

The "bundle of His" refers to conduction cells which respond to the electrical signal from the atrioventricular node. These cells play a crucial role in transmitting the electrical impulses from the atrioventricular node to the ventricles, allowing for coordinated contraction and pumping of blood throughout the heart.

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1

9.

What is "sinus rhythm"?

Orderly contraction of your atria and ventricles
Normal breathing through the nasal passage airways.
Abnormal heart rate
Your atria and ventricules contracting all at the same time

Correct Answer

A. Orderly contraction of your atria and ventricles

Explanation

Sinus rhythm refers to the normal electrical activity of the heart, where the atria and ventricles contract in a coordinated and organized manner. This rhythm is responsible for maintaining a regular heartbeat and efficient blood circulation throughout the body. It is considered the standard rhythm of a healthy heart.

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1

10.

What does the normal heart rate at rest range between per minute?

40 - 70
60 - 70
80 - 100
60 - 100

Correct Answer

A. 60 - 100

Explanation

The normal heart rate at rest can vary between 60 and 100 beats per minute. This range is considered to be within the normal range for a healthy individual at rest. Heart rate can be influenced by factors such as age, fitness level, and overall health. It is important to note that individual variations may exist, and it is always best to consult with a healthcare professional for personalized advice.

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First Aid - Anatomy And Physiology, Rct Trainers

What is the name of the machine that can be used to reset the heart's natural beat?

Quiz Preview

How many chambers does the heart have?

What controls the timing of your heartbeat?

What is the "heart rate"?

The eletrical signal travels through the network of conducting cell"pathways" It starts in a group of cells at the top of your heart called

When the SA node" fires" it triggers the following process

Where is the AV "Atrioventricular" node

What is the "bundle of His"?

What is "sinus rhythm"?

What does the normal heart rate at rest range between per minute?