Pathway of blood in the heart

The right side of the heart deals with _____ blood.

Deoxygenated

The left side of the heart deals with ______ blood.

Oxygenated

Where does deoxygenated blood need to go?

The lungs

Where does oxygenated blood need to go?

The rest of the body

Superior and inferior vena cava

Are large veins that carry oxygen-poor blood from the body to the heart

Superior vena cava

Direct and bring blood from above the heart, like arms, brain, arms and upper regions.

Inferior vana cava

Bring and direct blood from the lower regions of the body, like the abdominal area, legs and lower body organs.

Right atrium

Deoxygenated blood comes from the inferior vana cava and enters this region of the heart, located in the upper right chamber

Tricuspid valve

blood comes from the right atrium and passes through this valve into the lower chamber

Right ventricle

Blood comes from the tricuspid valve and enters this chamber and pumps blood forward

Pulmonary valve

from the right ventricle it passes through here to get to the pulmonary trunk

Pulmonary trunk

From the pulmonary valve it enters through here and heads towards the pulmonary arteries

Pulmonary artery

this vessel carries the oxygen-poor blood to the lungs to pick up oxygen and release carbon dioxide

Lungs

From the pulmonary arteries it enters here and heads towards the pulmonary veins

Pulmonary veins

oxygen-rich blood returns from the lungs through these

Left atrium

From the pulmonary veins, blood enters this upper left chamber

Mitral valve

blood flows from the left atrium and through this valve into lower chamber

Left ventricle

Coming from the valve prior, this strong chamber pumps the blood out

aortic valve

blood passes through this final heart valve

aorta

this main artery distributes oxygen-rich blood to rest of body

Heart murmurs

Are caused when heart valves do not close properly

Sounds of heart defined by

Lub-b

Dub-b

The sound lub-b

Is defined by closing of a ventricular valve

The dub-b sound

Is caused by semilunar valve

Is the thicker part of the heart

The left side of the heart

The ___ side of the heart is thicker due to its thicker _____ muscle

Left , myocardium

This valve prevents backflow of blood back into the left ventricle

Aortic semilunar valve

prolapsed valve

This issue disrupts unidirectional blood flow through the heart

The type of valve that can prolapse the most

Mitral valve

True or false: Sounds are important for diagnostic purposes

True - sounds are important for diagnostic purposes

An abnormal sound of a heart beat can mean

Valves are broken OR

Some sort of opening in a wall that is causing sound to not occur properly

True or false: electrical stimulation is the same as muscle contraction

False. They are not the same. Electrical stimulation leads to our heart contracting.

The sinoatrial node is often referred to as

Pacemaker

pace maker

The structure that is capable of depolarizing, or activating spontaneously (on its own)

True or false: you need a signal from the brain in order for the heart to beat

False - you do not need a signal from the brain for the heart to beat.

the ___ ____ activates and sends out electrical impulses throughout the ___ allowing it to contract.

sinoatrial node, atria

The electrical stimulation all centers up into this node

Atrioventricular node (AV node)

Function of the AV node

Functions to delay the electrical stimulation before we send it to the ventricles, in order to establish a pattern of contraction.

The ___ contracts first then the ____ afterwards.

Atria, ventricles

Why can’t the atria and ventricles contract at the same time?

To prevent backflow since one needs to happen before the other

Ventricles are ____(size) than the atrium

Bigger (and stronger)

Conduction myofibers

These are good at conduction electrical signals

Atria

These chambers receive blood and send to ventricles

Ventricles

These chambers will send blood out of heart