Hearts Are Special
Can initiate their own electrical charge
AUTOMATICITY
Blood leaves the heart through here, headed to the lungs; a semilunar valve
pulmonary valve
Heart cannot meet the demands of the body
CONGESTIVE HEART FAILURE (CHF)
10 mm/mV
NORMAL STANDARD
Endo-
Innermost layer
Valves are here
Can respond to external stimulus
EXCITABILITY
IRRITABILITY
Carries blood from the right ventricle to the pulmonary arteries
PULMONARY TRUNK
Coronary arteries cannot meet the demands of the heart
CORONARY INSUFFICIENCY
25 mm/sec
NORMAL EKG SPEED
Epi-
Outer layer
Can receive an electrical stimulus and transmit it
CONDUCTIVITY
Leaves the right ventricle to go to the lungs; this is the only artery with low-oxygen blood
PULMONARY ARTERIES
The machine
-GRAPH
5 mm X 5 mm high
or
0.20 sec wide
1 LARGE EKG SQUARE
Myo-
Thickest layer of heart
Made of muscle
Can contract after receiving an electrical stimulus
CONTRACTILITY
Only veins with high-oxygen blood; returns blood from lungs to the left atrium
PULMONARY VEINS
The printout
-GRAM
1 mm X 1 mm high
or
0.04 sec wide
1 SMALL EKG SQUARE
Peri-
Outer fluid sac layer
Separates heart from body
IVC gets blood from below diaphragm
SVC gets blood from
HEAD, NECK, UPPER BODY
Circulation from the heart's right ventricle to the lungs- to get oxygen & release carbon dioxide
PULMONARY CIRCULATION
The BASE is the TOP of the heart
and
the APEX is the _____ of the heart
BOTTOM
It's just annoying.
5 large EKG boxes = how many seconds
1 SECOND
List the 4 steps of a heart attack
1. Plaque builds up
2. Plaque breaks off
3. Plaque travels until it comes to an artery that's too narrow
4. This cuts off blood supply; heart dies