ECG Flashcards
What does ECG stand for
Electrocardiogram
Where is the sinoatrial node located
In the top of the right atrium
What is the job of the sinoatrial node
To send electrical signals to contract the atria
What is a nickname for the sinoatrial node
The pacemaker
Where is the atrioventular node located
In the bottom of the right atrium
What is the job of the atrioventular node
Electrical signal transported through bundle of HIS and is transported through punjurke fibers to make ventricles contract
Remember to go over ECG diagram of pulse
pls
What are the sounds of the heart
LUB and DUB
What is the sound of LUB
The sound of the AV valves closing
Ventricles are contracting
Loud and long
What is the sound of DUB
The sound made as the semi lunars shut
The atricles are about to shut
Soft and short
Where pressure is exerted when ventricles contract
On the aorta and plumatory arteries
Systolic pressure
Maximum pressure from ventricles contracting
Dystolic pressure
The lowest pressure when ventricles contract
How is blood pressure measured
Sphygomonmanometer
What is cardiac output
Its the amount of blood pumped by the heart in one minute
What is stroke volume
The amount of blood forced out with each beat
What are some good signs of good cardiovascular health
short recovery
Low heart rate
High stroke volume
What is the result of strengthened ventricle walls
Larger ventricle chambers
What are the three pathways of the circulatory system
Plumatory
Systemic
Coronary
Plumatory pathway
Transport oxygen poor blood to lungs and rich blood to the heart
Systemic pathway
Moves oxygen rich blood throughout the body into tissues giving it nutrients
Coronary pathway
Provides oxygen to heart tissues
Oxygen rich blood travels from the aorta to the coronary arteries and then back by the veins
Atherosclerosis
Buildup of plaque on the inside of the artery walls. Restict blood flow
What are treatments for artherosclerosis
Asprin
Angioplasty (ballon with mesh to hold it up)
Coronary bipass (grandma procedure)
Heart murmer
Results from a leaky valve
Can be heard
Heart attack
Restricted flow of blood to the heart muscle
Heart cells begin to die
Stroke
When poor blood flows to the brain resulting in cell death
Plasma
Fluid portion in the blood
What are some parts in plasma
Water
Disolved gas
Proteins
Hormoes
ect
What is another word for red blood cells
Erthrocytes
Anemia
Too little red blood cells or hemoglobin
What is another word for white blood cells
Leukocytes
Where are white blood cells produced
Bone marrow/ thyme
What is the lifespam of white blood cells
few hours/ days
Platelets
Prevent blood loss
What is the lifespam of platelets
2-8 days
What is the first step to a blood clot
Having a wound
What is the result of a blood clot
Fibrin is created it is a plug
Homeostatic regulation
Maintians tempeture by balencing heat production
Vascodiliation
Bodys internal tempature becomes too warm.
What is perspiation
Helps the body get rid of exess heat
Vasoconstriction
Bodys internal temepature is too cold
What fluid are cells surrounded by
interestinal fluid between cells and tissues
