Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
EKG Class 4, 5 6
Anatomy-Physiology-Conduction-Cardiac Cell
| Question | Answer |
|---|---|
| Location of the Heart | Left of the sternum |
| Sternum | Bone in center of chest |
| Heart size | A fist |
| Ribs are attached to? | The sternum |
| What side does heart point to? | Left |
| Function of ribs | Protects the internal organs |
| Xiphoid Process | Cartilage at the end of sternum |
| Diaphragm | Muscle that separates the thoracic cavity and abdominal cavity |
| Function of Thoracic cavity | Protects lungs and heart |
| Function of Abdominal cavity | Protects all other organs below |
| Clavicles | Collar bones |
| Heart is made up of how many layers? | Three |
| Layers of the heart | Endocardium, Myocardium, Pericardium |
| Endocardium | Inside layer |
| Myocardium | Middle layer |
| Pericardium | Outer layer |
| What is the heart muscle? | Myocardium |
| Function of the Pericardial sac | Prevents friction of the pericardial sac and pericardium |
| Heart has how many chambers | Four |
| First chamber of heart | Right Atrium |
| Second chamber | Left Atrium |
| Third chamber | Right Ventricle |
| Fourth chamber | Left Ventricle |
| Location of Interatrial septum | Between the Atria |
| Location of Interventricular septum | Between right & left ventricle |
| What divides the chamber vertically? | Septum |
| Valves | Keep blood moving in the right direction |
| Semilunar valves | Send blood out of the heart |
| Pulmonic valve | Sends blood out of the heart to the lungs |
| Aortic valve | Sends blood out of the heart thru' the aorta to entire body |
| Semilunar valves | Pulmonary & Aorta |
| AV valves | Atrial ventricular valves |
| Atrial ventricular valves | Sends blood from the atriums to the ventricles |
| AV valves | Tricuspid & Mitral |
| Tricuspid valve | Sends blood from the R atrium to the R ventricle |
| Mitral valve | Sends blood from the L atrium to the L ventricle |
| Veins | Carry unoxygenated blood to the heart |
| Arteries | Carry oxygenated blood away from the heart |
| Two main veins | Superior & Inferior vena cavae |
| Superior vena cava | Carry unoxygenated blood from the upper portions of body to the heart |
| Inferior vena cava | Carry unoxygenated blood from the lower portions of body to the heart |
| Exception veins | Pulmonary veins |
| Arteries | Carry oxygenated blood to the heart |
| Exception arteries | Pulmonary arteries |
| Exception Pulmonary arteries | Carry UNOXYGENATED blood from the right ventricle to the lungs |
| Exception Pulmonary veins | Carry OXYGENATED blood from the lungs to the heart |
| Largest artery | AORTA |
| Aorta function | Carry oxygenated blood to the entire body |
| Aorta | Largest artery |
| Coronary Arteries | First vessels off the Aorta |
| Right coronary artery | Supplies oxygenated blood to the right side of the heart |
| Left coronary artery | Pumps out the blood to the whole side of the heart muscle |
| Branches of left coronary artery | Left anterior descending & Circumflex arteries |
| Left main portion of left coronary artery | Window maker |
| Blockage to left main portion of left coronary artery causes | MI & cardiac death |
| Circumflex artery function | Supplies oxygenated blood to the lateral & posterior walls of the heart |
| Chordae tendineae location | Attached to both tricuspid & Mitral valves |
| Chordae tendineae function | Open and close valves when atriums are full |
| Aveoli | Sacs in the lungs where un-oxygenated blood picks up oxygen |
| Low Pressure pump | Right Heart pumping unoxygenated blood to lungs thru' right atrium & right ventricle |
| High Pressure pump | Left Heart pumping oxygenated blood out to the body thru' left atrium & left ventricle |
| Normal blood pressure values | 120/80 |
| cardiac cycle takes 0.8 sec = | 1 heart beat |
| Systole | When ventricles contract and send blood thru' body |
| Diastole | When the contraction ends and the valves relax |
| SA node | Sinoatrial node |
| Sinoatrial node function | Initiates heart beat |
| Pacemaker | SA node |
| SA node location | Right atrium |
| Internodal Pathways | Bachman's bundle |
| Internodal Pathways function | Causes atria to contract |
| Origin of internodal pathways | SA node |
| Atrioventricular node | AV node |
| Atrial contraction | Firing of SA node=>Internodal Pathways=>AV node |
| Impulse pauses at | AV node |
| Bundle of HIS | Starts deporalization of ventricles |
| Right Bundle of HIS | Stimulates Right ventricle |
| Left Bundle of HIS | Stimulates Left ventricle |
| Bundle of HIS branches | Anterior & Posterior fascicles |
| Anterior fascicle | Stimulates front wall of left ventricles & Superior wall of left ventricle |
| Posterior fascicle | Stimulates back wall of left ventricle & Inferior portion of left ventricle |
| Purkinje fibers | Stimulates the Apex |
| APEX | Tip of heart |
| Papillary muscles hold | Chordae tendineae |
| Chordae tendineae anchors | Tricuspid & Mitral valves |
| Atrial Contraction consists of: | SA node, AV node & internodal Pathways |
| AV node is the: | Relay electrical station between Atria & Ventricles |
| Ventrical Contraction consists of: | Bundle of HIS, Bundle Branches, & Purkinje fibers |
| Endocardium function | Membrane that lines cavities of heart wall and forms part of heart valves made of endocardial tissue |
| Cardiac cells location | Myocardium |
| # of cells in the myocardium | Three |
| Cardiac cells | Electrical,Intercollated disc & Myocardial cells |
| Electrical cells function | Backup system to the SA node |
| Intercollated disc function (specialized cells) | Allows for conductivity from cell=>cell |
| Myocardial cells are: | Muscle cells |
| Properties of Electrical cells | Automaticity, Excitability & Conductivity |
| Automaticity | Ability to generate an impulse |
| Excitability | Ability to respond to impulse |
| Conductivity | Ability to produce or transfer an impulse from cell=>cell |
| Two important cells for electrical conduction | |
| Repolarization | Resting phase |
| Depolarization | Contraction phase |
| Sodium = | Positive ion |
| Potassium | Negative ion |
| Myocardial cells properties | Contractility & Extensibility |
| Contractility | Ability to lengthen & shorten |
| Extensibility | Ability to stretch |
| Starts depolarization (contraction) | Bundle of HIS |
| Muscular layer | Myocardium |
| Three leaflet valve | Tricuspid |
| Study of heart | Cardiology |
| Upper chamber | Atrium |
| Electrocardiogram | EKG |
| Cartilage at end of rib cage | Xiphoid Process |
| Active stage | Depolarization |
| Between left atrium & Ventricle | Mitral valve |
| Largest artery | Aorta |
| Vessel to lungs | Pulmonary artery |
| Electrical system | Conduction |
| Wall between right and left side | Septum |
| Picked up in lungs | Oxygen |
| Repolarization | Rest |
| Middle of chest | Sternum |
| Leaftlet | Cusp |
| End of atrial contraction | Internal pathways |
| Spreads impulse to R atrium & L atrium | Internal pathways |
| Begins ventricle contraction | Bundle of His |
| Ends ventricle contraction | Purkinje fibers |
Created by:
Moshort
Popular Medical sets