nurse chung cards, general

what circulates in arteries and veins of humans

blood

what does blood transport and to what

o2 and co2 to and from tissues

color of blood

red

if blood is a brighter color that means there is more…

oxygen

what are the two primary functions of the cardiovascular system

maintain homostasis

transportation

what are the three things that are regulated by the cardiovascular system to maintain homeostasis

ph

temperature

osmotic pressure

what are the three things that are transported by the cardiovascular system

hormones

nutrients

gases

what are the three things that blood is composed of

plasma

erythrocytes and cells

platelets

what is the liquid portion of blood

plasma

what are the four components of blood plasma

lipids

salts

proteins

water

what are the three components of erythrocytes and cells and what do they do

RBC transport
WBC fight infection

hemoglobin iron rich protein in RBC that give blood color

what component of blood helps with clotting

platelets

blood flow through heart: what carries blood AWAY from heart

arteries

blood flow through heart: typically oxygen rich (unless its pulmonary)

arteries

blood flow through heart: carry blood back to heart

veins

blood flow through heart: typically oxygen poor (unless its pulmonary)

veins

arteries typically carry blood…

away from blood

veins typically carry blood…

towards heart

blood flow through heart: what is the exception to the normal blood flow through heart

pulmonary arteries oxygen poor blood

pulmonary veins oxygen rich blood

small blood vessels where oxygen is delivered to organs and tissues

and CO2 rides back to lungs

capillaries

what are capillaries and what do they do

small blood vessels where oxygen is delivered to organs and tissue

CO2 rides back to lungs

blood flow through heart: what are two things that valves do …

separate chambers

prevent blood from flowing backwards

blood flow through heart: thing that separates chambers

valves

blood flow through heart: thing that prevents blood from flowing backwards

valves

atria… thinner or thicker walls

thinner

ventricles… thinner or thicker walls

thicker

blood flow through heart: what goes on top… atria or ventricles

atria

blood flow through heart: right side of heart contains (oxygenated or deoxygenated blood)

deoxygenated

blood flow through heart: left side of the heart contains (oxygenated or deoxygenated blood)

oxygenated

what kind of blood does the aorta transport

oxygenated

collects deoxygenated blood from LOWER half of body

inferior vena cava

collects deoxygenated blood from upper half of body

superior vena cava

the fingers is an example of BLANK blood would be collected

deoxygenated

the hearts own blood supply comes from…

coronary arteries

the heart requires its own blood supply in order to receive what two things

oxygen and glucose

coronary arteries branch off of the…

aorta

the coronary arteries transport blood into…

capillaries that weave around heart muscle

once the dedicated blood supply is used by the heart what kind of blood does it become?

where does it get sent back to?

and through what?

deoxygenated

heart

coronary veins

deoxygenated blood returns to right atrium via…

coronary sinus

the blood that goes through the coronary sinus is delivering…

deoxygenated blood to right atrium

purpose of the septums..

seperate oxygen rich blood from oxygen poor blood

septums: thin muscular structure

interatrial septum

septums: two parts of the interatrial septum include…

fossa ovalis

limbus of fossa ovalis

septums: seperates right and left atria

interatrial

septums: thick muscular wall

interventricular

septums: two parts of the interventricular septum include

membranous portion

muscular portion

septums: seperates right and left ventricles

interventricular

septum defects: what is its classification

congentical

septum defects: abnormal opening

atrial septal defects

septum defects: 1 or more holes

ventricular septal defect

septum defects: blood flows between 2 atria

atrial septal defects

septum defects: blood flows between ventricles

ventricular septal defects

what is the sole cmmunication between atrium and ventricles

electrical conduction system

the electrical conduction system of the ehart is the sole communication between BLANK and BLANK

atrium and ventricles

governs heart rate

electrical conduction system of the heart

name the order of each wave on photo

p

QRS

T

ECG waves (which one): atrial depolarization

p wave

ECG waves (which one): atrial contraction

p wave

ECG waves (which one): ventricular depolarization

QRS complex

ECG waves (which one): ventricular contraction

QRS complex

ECG waves (which one): atrial re-polarization

QRS complex

what is the normal QRS range in seconds

0.06 to 0.12

ECG waves (which one): ventricular repolarization

t wave

ECG waves (which one): ventricular relaxation

t wave

acts as critical baseline

iso electric line

isoelectric line represents moment when

hearts electrical activity has no net moment

what is the electrical potential state of the iso-electric line

0

essential for accurately interpreting hearts electrical signal

iso-electric line

distinguishes between phases of heart activity

isolectric signals

depolarization means to

contract

depolarization means to

relax

what happens more forcefully during the QRS complex

ventricular depolarization

what are the two things that happen during the QRS complex

ventricular depolarization

atrial repolarization

what happens during the P-wave

atrial depolarization

what happens during the T - wave

ventricular repolarization

what are the two states of blood pressure

systolic

diastolic

systolic vs diastolic: contraction of heart

systolic

systolic vs diastolic: lub sound

systolic

systolic vs diastolic: top number on readings

systolic

systolic vs diastolic: peak pressure in arteries

systolic

systolic pressure should be at or lower than…

120

systolic vs diastolic: determines how hard the heart has to works

systolic

systolic vs diastolic:

relaxation of the heart

diastolic

systolic vs diastolic: dub sound

diastolic

systolic vs diastolic: bottom number on readings

diastolic pressure

systolic vs diastolic: lowest pressure in arteries

diastolic

diastolic pressure should be lower than…

80

systolic vs diastolic: measures resistance of blood floww within arteries

diastolic

too high of a diastolic number indicates

narrow or stiff arteries

high systolic number indicates

hypertension

heart working too herd