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Structure and Function of the Heart

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Total cards: 20•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (20)

#1
Front (Question)

Atrioventricular Valve

Back (Answer)

Name of valve between atrium and ventricle and stops back flow of blood from Ventricles to Atriums (be specific to which side in exam)

#2
Front (Question)

Semilunar valve

Back (Answer)

Valve that stops back flow of blood from arteries (Aorta and pulmonary Artety) into ventricles (Left Ventricle and Right Ventricle)

#3
Front (Question)

Cardiac Output

Back (Answer)

The blood pushed through each ventricle in a minute CO=HRxSV

#4
Front (Question)

Stroke Volume

Back (Answer)

volume of blood expelled by each ventricle on contraction. Stronger the contraction the greater the stroke volume

#5
Front (Question)

RV and Lv volume of blood pumped

Back (Answer)

The left and right ventricles pump the same volume of blood through the aorta and pulmonary artery.

#6
Front (Question)

Atrial Systole

Back (Answer)

Atria contract, Blood pushed through to ventricles, AV Valves Open (SL valves closed)

#7
Front (Question)

Ventricular Systole

Back (Answer)

Ventricles contract, Blood pushed out of arteries, AV valves closed, SL valves open

#8
Front (Question)

Diastole

Back (Answer)

Heart relaxes and fills with blood from the veins. SL valves closed, AV Valves open.

#9
Front (Question)

How are SL valves closed in diastole

Back (Answer)

the higher pressure in the arteries closes the SL Valves

#10
Front (Question)

Stethoscope

Back (Answer)

The opening and closing of SL and AV valves are responsible for the heart sounds heard with a stethoscope

#11
Front (Question)

Sino-atrial node (SAN/SA)

Back (Answer)

Contains autorthymic cells that send waves of electrical signals across atria. Located in wall of right atrium and also known as pacemaker. Sets the rate at which the heart contracts.

#12
Front (Question)

Atrioventricular Node (AVN)

Back (Answer)

Receives signals from atria and sends signals down fibres in the walls of ventricles. Located in centre of heart (A=centre of attention)

#13
Front (Question)

Fibre in Ventricular Walls

Back (Answer)

Receive signals from AV Node, cause ventricles to contract. Located in central walls of heart.

#14
Front (Question)

Noradrenaline

Back (Answer)

Released when sympathetic nerve activated , causes increase heart rate when released in SA node.

#15
Front (Question)

Acetylcholine

Back (Answer)

Released when parasympathetic nerve activated, cause decrease heart rate when released in SA node.

#16
Front (Question)

electrocardiogram

Back (Answer)

Impulses in the heart generate currents that can be measured by a electrocardiogram (ECG)

#17
Front (Question)

Hypertension

Back (Answer)

Hypertension is High blood pressure is major risk factor for diseases like stroke and coronary heart disease.

#18
Front (Question)

Typical blood reading for a young adult with a symgmanoneter

Back (Answer)

120/80mmHg

#19
Front (Question)

SPHYGMOMANOMETER

Back (Answer)

An inflatable cuff stops blood flow in the artery and deflates gradually. The blood starts to flow (detected by a pulse) at systolic pressure. The blood flows freely through the artery (and a pulse is not detected) at diastolic pressure.

#20
Front (Question)

Blood Pressure

Back (Answer)

Blood pressure is the force of blood pushing against the walls of the blood vessels, caused by the contraction of the ventricles The BP increases during ventricular systole and decreases during diastole.