Electricity [ Ans: ] flow of electrons, metals jump from one
atom to another, ions move throughout the body
Ions [ Ans: ] charged particles in the body (Na+, Cl-, K+)
battery [ Ans: ] takes a chemical rxn and converts it into
electric energy that allows electrons to get pushed out the
negative pole, allowing electrons to move. Provides force
to push
Unipolar recording system [ Ans: ] one pole records
electrical activity
- if the electrical voltage at the pole is diff from the
ground, the voltmeter records
- one EKG, if positive ions hit pole, positive deflection is
recorded, when they leave, back to baseline
Bipolar recording system [ Ans: ] two poles electrical diff
is recorded, each bipole is called a "lead"
- if one pole is different, it gets recorded on voltmeter
- baseline has no electricity, positive deflection hits first
pole, back to baseline hits both poles, and negative
deflection is from second pole.
- poles hit at same time consistently leads to barely any
recording, parallel to the poles is bad
,myocyte [ Ans: ] a muscle cell, what the heart cells are
classified as
striations [ Ans: ] special proteins that allow the heart
muscle cell to contract
- look like thin lines that ran through the cytoplasm
intercalated discs [ Ans: ] thick junctions between cells
that signals to contract are sent through
SMA-7 [ Ans: ] a shorthand way of writing the electrolytes
in the body
electrolytes [ Ans: ] concentrations of the ions that are
found in the blood
plasma [ Ans: ] clear part of blood that doesn't coagulate
due to anticoagulant
serum [ Ans: ] collected after blood is allowed to clot, can
measure ions with
what is the concentration of K+ and Na+ in the cell? [ Ans:
] K+ is high inside the cell and low outside
Na+ is low inside the cell and high outside
right ventricle location [ Ans: ] in the front
left ventricle location [ Ans: ] left side and behind a little
, right atrium location [ Ans: ] right side
left atrium location [ Ans: ] left side but mostly behind the
heart
how does blood flow through the heart? [ Ans: ] superior
vena cava and inferior vena cava veins take venous blood
into the right atrium . Then through the tricuspid valve
into the right ventricle into the pulmonic valve then
pulmonary artery into the lungs. Returns to the left atrium
through four pulmonary veins. Then through mitral valve
to left ventricle. Then to aortic valve through the aorta.
The main artery of the body.
venous blood [ Ans: ] deoxygenated blood
aorta [ Ans: ] Largest artery in the body
what is the thickness of the muscle of the right atrium? [
Ans: ] thin muscle
tricupsid valve [ Ans: ] has three leaflets and keeps blood
flowing in proper direction
- when ventricle contracts the valve closes so blood
doesn't go backwards
chordae tendineae [ Ans: ] strong, fibrous connections
between the valve leaflets and the pupillary muscles.
Prevent cusps from swinging back into the atrial cavity
atom to another, ions move throughout the body
Ions [ Ans: ] charged particles in the body (Na+, Cl-, K+)
battery [ Ans: ] takes a chemical rxn and converts it into
electric energy that allows electrons to get pushed out the
negative pole, allowing electrons to move. Provides force
to push
Unipolar recording system [ Ans: ] one pole records
electrical activity
- if the electrical voltage at the pole is diff from the
ground, the voltmeter records
- one EKG, if positive ions hit pole, positive deflection is
recorded, when they leave, back to baseline
Bipolar recording system [ Ans: ] two poles electrical diff
is recorded, each bipole is called a "lead"
- if one pole is different, it gets recorded on voltmeter
- baseline has no electricity, positive deflection hits first
pole, back to baseline hits both poles, and negative
deflection is from second pole.
- poles hit at same time consistently leads to barely any
recording, parallel to the poles is bad
,myocyte [ Ans: ] a muscle cell, what the heart cells are
classified as
striations [ Ans: ] special proteins that allow the heart
muscle cell to contract
- look like thin lines that ran through the cytoplasm
intercalated discs [ Ans: ] thick junctions between cells
that signals to contract are sent through
SMA-7 [ Ans: ] a shorthand way of writing the electrolytes
in the body
electrolytes [ Ans: ] concentrations of the ions that are
found in the blood
plasma [ Ans: ] clear part of blood that doesn't coagulate
due to anticoagulant
serum [ Ans: ] collected after blood is allowed to clot, can
measure ions with
what is the concentration of K+ and Na+ in the cell? [ Ans:
] K+ is high inside the cell and low outside
Na+ is low inside the cell and high outside
right ventricle location [ Ans: ] in the front
left ventricle location [ Ans: ] left side and behind a little
, right atrium location [ Ans: ] right side
left atrium location [ Ans: ] left side but mostly behind the
heart
how does blood flow through the heart? [ Ans: ] superior
vena cava and inferior vena cava veins take venous blood
into the right atrium . Then through the tricuspid valve
into the right ventricle into the pulmonic valve then
pulmonary artery into the lungs. Returns to the left atrium
through four pulmonary veins. Then through mitral valve
to left ventricle. Then to aortic valve through the aorta.
The main artery of the body.
venous blood [ Ans: ] deoxygenated blood
aorta [ Ans: ] Largest artery in the body
what is the thickness of the muscle of the right atrium? [
Ans: ] thin muscle
tricupsid valve [ Ans: ] has three leaflets and keeps blood
flowing in proper direction
- when ventricle contracts the valve closes so blood
doesn't go backwards
chordae tendineae [ Ans: ] strong, fibrous connections
between the valve leaflets and the pupillary muscles.
Prevent cusps from swinging back into the atrial cavity
