AP11.3 Heart Physiology Heart

Cardiovascular System: Heart Physiology

Multiple Choice

Blood pressure is recorded as

• Systolic/diastolic

• Diastolic/systolic

Multiple Choice

Normal blood pressure is...

• 120/80 mmHg

• 80/120 mmHg

• 140/90 mmHg

• 80/140 mmHg

Multiple Choice

The number on the bottom of a BP reading measures...

• Pressure during a heart contraction

• Pressure between heart beats when the heart is relaxed

Multiple Choice

Hypertension is anything above...

• 120/80 mmHg

• 90/120 mmHg

• 140/90 mmHg

• 80/140 mmHg

Open Ended

Surf the link or scan QR code:

https://qrgo.page.link/Sn1vs

Follow the instruction & write the correct

(i) systolic (start hear pulse) =

(ii) diastolic (stop hear pulse) =

(you must use earphone/headphone/increase volume).

Multiple Choice

What creates systolic pressure when the heart contracts?

• Blood refilling the heart as the heart relaxes

• Blood being pumped out of the heart as the ventricles contract

Multiple Choice

A flap of tissue that prevents blood from flowing backward

• Aorta
• Atrium
• Septum
• Valve

Multiple Choice

Which of the following statements is correct?

• The lub sound from a heartbeat comes from semilunar valves closing and the dub sound comes from AV valves closing.

• The lub sound from a heartbeat comes from AV valves closing and the dub sound comes from semilunar valves closing.

Multiple Choice

The 'Dub' sound of the heart's LUB DUB? are the....

• Atrioventricular valves closing
• Semilunar Valves closing
• Blood flowing through the Pulmonary Trunk and Aorta
• Blood Flowing down into the venticles

Multiple Choice

The 'Lub' sound of the heart's LUB DUB? are the....

• Atrioventricular valves closing
• Semilunar Valves closing
• Blood flowing through the Pulmonary Trunk and Aorta
• Blood Flowing down into the venticles

Poll

The aorta carries ____________ blood from the left ventricle to upper & lower body

• oxygenated

• deoxygenated

Poll

Pulmonary arteries (L & R): carry _________________ blood from the right ventricle to the lungs.

• oxygenated

• deoxygenated

Poll

The Vena cava (superior & inferior): carries _________________ blood from the upper & lower body into the right atrium.

• oxygenated

• deoxygenated

Poll

Pulmonary veins (2 pairs, L & R): carry _________________ blood from lungs into the left atrium.

• oxygenated

• deoxygenated

What Happens During a Heart Attack?

https://www.youtube.com/watch?v=3_PYnWVoUzM

You must copy/paste the link into a separate window to play.

Can you spot the blockage?

Multiple Choice

Which coronary artery exhibits a blockage in the top photo of this arteriogram?

• Right Coronary Artery

• Left Coronary Artery

• Great Coronary Vein

• There is no blockage - this is a trick question.

Multiple Choice

Which of the following is NOT a direct indicator of a person's cardiac health?

• Heart Rate
• Blood Pressure
• EKG
• Temperature 

What is the Heart Conduction System & How Does it Work?

https://www.youtube.com/watch?v=fZT9vlbL2uA

You must copy & paste the link in a separate window to view.

Multiple Choice

Which part of the Heart Conduction System is considered "the pacemaker?"

• Purkinje Fibers

• Bundle of His (AV Bundle)

• Sinoatrial (SA) Node

• Atrioventricular (AV) Node

• Left & Right Bundle Branches

Multiple Choice

Which part of the Heart Conduction System delays contraction of the ventricles until they fill up fully with blood?

• Purkinje Fibers

• Bundle of His (AV Bundle)

• Sinoatrial (SA) Node

• Atrioventricular (AV) Node

• Left & Right Bundle Branches

Multiple Choice

Which part of the Heart Conduction System carries the electrical impulse from the AV node into the septum of the heart where it splits?

• Purkinje Fibers

• Bundle of His (AV Bundle)

• Sinoatrial (SA) Node

• Atrioventricular (AV) Node

• Left & Right Bundle Branches

Multiple Choice

Which part of the Heart Conduction System carries the electrical impulse down the septum and into the left and right ventricles?

• Purkinje Fibers

• Bundle of His (AV Bundle)

• Sinoatrial (SA) Node

• Atrioventricular (AV) Node

• Left & Right Bundle Branches

Multiple Choice

Which part of the Heart Conduction System carries the electrical impulse back up toward the atria?

• Purkinje Fibers

• Bundle of His (AV Bundle)

• Sinoatrial (SA) Node

• Atrioventricular (AV) Node

• Left & Right Bundle Branches

Open Ended

Cardiac Output varies with the demands of the body.

Provide at least 3 examples of reasons cardiac output may vary (increase or decrease).

Multiple Choice

How long does it take a red-blood-cell to travel round-trip through the body by systemic circulation?

(This is called Cardiac Output)

• 1 hour

• 1 second

• 1 minute

• 10 minutes

• 10 seconds

Calculating Cardiac Output & Stroke Volume

Yay...math.

Open Ended

Determine your "at rest" heart rate, and then extrapolate to beats per hour and beyond.

Your age: _________________

Number of beats in 15 seconds: _____________

Multiply by 4 to get number of beats per minute: _____________

Multiply your answer for per minute by 60 to get per hour: ________

How many beats would there be per year? ___________________

If your heart beat stayed constant how many beats would there be at 85 years old?

_________________________________________________________

Open Ended

To calculate cardiac output, you need to know your body surface area in square meters and your cardiac index (how much blood is pumped per minute for every square meter of body surface area).

To find your body's surface area, first use a conversion tool (Google) to determine your weight in kilograms and your height in centimeters.

1. Weight =___________ (kilos) Height = ______________ (cm)

On a nomogram, find your weight in the right column and your height in the left column.

Place a straight-edge on the nomogram so the weight and height are connected. The point where the straight-edge crosses the center column denotes your body's surface area in square meters.

2. What does the nomogram denote your body’s surface is? _______

Open Ended

How much blood the heart pumps for every square meter of surface area (cardiac index) varies with the age of the individual. For teens and adults, the average cardiac index is 2.5 - 4.0 liters/m2/minute.

We will use 2.75 liters/m2/minute for our measurement.

Multiply your body surface area by the cardiac index (2.75 l/m2/minute) to determine the liters of blood pumped by your heart in one minute (cardiac output).

1. Body surface area _____________ x 2.751/m²/minute = ___________liters per minute.

2. How does your volume per minute compare to a 2 liter beverage bottle? Is it more, less, about the same?

________________________________________________________

3. How much blood is pumped in an hour? In one day? ____________

Multiple Choice

Term used to discuss any change or deviation from the normal rate or rhythm of the heart

• Arrhythmia

• Aneurysm

• Hematoma

• Sickle cell anemia

Multiple Choice

Term used for rapid heart rate (more than 100 beats per minute)

• Bradycardia

• Tachycardia

Multiple Choice

term for slow heart rate (less than 60 beats per minute)

• Bradycardia

• Tachycardia

Multiple Choice

Indicate some defects in the valves of the heart

• Murmurs

• Claudication

• Varicose Veins

• Atherosclerosis

Multiple Choice

The ballooning out of an artery, accompanied by the thinning arterial wall, caused by weakening of the blood vessel

• Aneurysm

• Hematoma

• Sickle cell anemia

• Coronary Artery Disease