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178 Cards in this Set

  • Front
  • Back
fish has
()-1 atrium
()-1 ventricle
least efficient has oxygen rich blood and oxygen poor blood
exothermic
cold blooded
endothermic
humans warm blooded takes alot of energy to do this and you must have more effecient oxygen to be this
when you have 1 ventricle and 1 atrium it is a
single heart
amphimbians
()()-2 atriums pump oxygen rich and poor move to land from here
()-ventricle
incomplete double circulation occurs in three chamber heart in amphibians and this means that oxygen poor and oxygen rich blood never mix
- 3 chamber heart
incomplete double circulation
occurs in three chamber heart in amphibians and this means that oxygen poor and oxygen rich blood never mix
Reptiles
4 chamber heart only one to have this is crocodile
(RA)(LA)
(RV)(LV)
birds
(RA)(LA)
(RV)(LV)
in this we have a seperation of oxygen rich and poor blood no mixing of to is four chamber heart. the right side handle poor and the left handles rich blood
- complete double circulation - you never mix not even in the ventricle
mammals
(RA)(LA)
(RV)(LV)
in this we have a seperation of oxygen rich and poor blood no mixing of to is four chamber heart. the right side handle poor and the left handles rich blood
complete double circulation -
you never mix not even in the ventricle oxygen poor and rich blood
septum
divides the heart into R&L portions between the venrticles
when you have a hole in the heart you have a hole in the
septum
Fish
Amphibians
Reptiles
Birds
Mammals
single chamber
three chamber- incomplete double circulation
four-crocodile
four- complete double circulation
four-complete double circulation
visceral pericardium
inner most makes the heart shiny is the thinnest, dense connective tissue
parietal pericardium
middle layer of the heart, dense c,t
fibrous pericardium
is the thickest outermost layer of the heart is dense c.t
pericardiaal
space between the paritial paricardium and the visceral pericardium and it contains pericardium fluid and it prevents irrataion (pericarditis)
pericarditis
due to bacterial infection in the pericardial cavity
what are the three pericardium of the heart
visceral pericardoium
parietal pericardoium
fibrous pericardoium
(goes thinnnest to thickest and inner to outer)
what is between the visceral pericardium and the parietal pericardium
pericardial cavity
epicardium
outermost layer of the heart wall directly beneath the visceral pericardium is for protection and produces the pericardium fluid and fills the cavity and consist of E.T and a thin layer of C.T
Miocardium
the middle layer is muscle and cardiac muscle only found in the heart
endocardium
E.T with C.T under it is the inner most layer if the heart
layers of the heart from outside to inside:
epicardium
miocardium
endocardium
endocarditis
inflamation of the innermost layer of the heart symptoms are similar to heart attack
valvular stenosis
chronic inflammtion of this can cause the valves to change shape of heart valve could be due to endocarditis or high blood pressure! can cause heart murmur
prolapsed valve
when the valve starts to turn inward and the valve can close and blood flows backward
and thats what gives you ur murmur
bicupsid valve
mitral valve also called is between the LA-LV is the high pressure side of the heart rich blood(has two cusps)
atrioventricular orfice
holes betwen RA-RV n LA-LV
Tricupsid valve
regulates the passage of blood into the RA-RV oxygen poor side low pressure side of the heart( has three cusps)
skeleton of the heart
extra dense c.t found in extra parts of the heart in the septum or where a vessle joins the heart there is more dense c.t
what causes valves to open and close
presure changes in the heart
papillary muscle
involuntary typ of muscle and contracts and relaxes due to preseeure there is long starnd that attach to the cusps
cordenea tendenae
tendons that attach the papillaty muscle to the cusps of the muscle, pull on the valve and help open and close valve
superior vena cava
drains the head n neck and brings the blood back to the heart
coranary sinus
drains the walls of the heart itself
the walls of the ventricle are much ____ than the walls of the arteries
thicker
the only thing that can pump blood is ___ the it enters through
chember/chamber, vessels
blood moves through or regulates blood
valve
veins
arteries
bring to heart
way from heart
the only arteries that carry oxygen poor blood is
pulmonary arteries
two pulmonary circulatotion
pathways
heart to lungs
lungs to heart
list of how blood flows:
superior vena cava
inferior vena cava
right venrticle
pulmonary artery-blue
now to lungs
now send back to pulmonary veins- in red on model
left antrium
left ventricle
aortic semi valve
final thing is pump to aorta
systemic circulation
heart to body
body to heart
the heart has to feed itself if not you will have a
heartattck
coronary arteries are ___ on the model and pulmonary arteries are ____
red blue
when coronary arteries block the tissue below turns and thats when you have a (dead or dying heart tissue)
heart attack
when you go from the rv to lv you go through the
bicupsid
all the coronary veins take back the blood to the ___ where this drains the heart itself
coronary sinus
anastomoses
extra branches of coronary arteries and if you are very athletic the corory arteries form extra branches and supplies the heart with more oxygen
Ischemia
tissue is not getting enough oxygen
coranary thrombosis
blood clot that is forming in the heart has the same effect as plaque can cause heart attack
Angina
occurs during exercise when the coronary artery becomes clogged treats with nitro glisorin and dilates vessels
myocardial infarction
medical term for of heart attack, is caused by dead or dying myocardium, how much tissue is gone or dead is how severe the heart attack you have had
congestive heart failure
is when the heart wears out and you are drowning on your own blood because you have fliud in your lungs and if you will not taken care of you will die (backs up between heart n lungs)
bipass surgery
triple
douple
- coronary arteries are blocked so the surgery unblockes these
functional syncytium
found only in the heart, a mass of merging cells that act as a unit
EX: the chambers contract as unit
cardiac cycle
you have the proper contartion in the heart in the proper time n order with the arterieries and vertricles
systole/diastole info is:
140/90 is blood pressure is called the silent killer and your body adjust to the high pressure over time and it affects your valves arteries and heart 130/80- wants to lower
systole/diastole define
pumping pressure of the heart
resting pressure of the heart
what is the typical range of blood pressure
110-120/60-80
if a chamber is contracting it is called
atrium systiole
if a chamber is resting it is
atrium diastole
self exciting tissue
resembles nervous tissue but is not and sets up its own pattern is in the RA and recieves info from brain and conrtols rythym of the heart
sinotrial node
natural pacemaker of the heart keeps, if this one fails then thats when you get a pacemaker , gets info from the brainsend electric signal out to RA n LA out and casuses the atriums to contract together, blood down into ventricles
atroventicular node
in the RA, has to functions
-relays impulse to ventricles from S node
- slightly delays impulse fractions of sec
to make sure all the blood is out of the ventricles befpre contraction
- AV node
bundle of his
comes of of RA and AV node and carries impules to septum of heart and in the hseptum it sevides in to to parts called R&L Bundle Fibers once these reach the apex and run into the walls of the ventricles
R&L bundle fibers
is exciting tissue thats in the septum these reach the apex and run into the walls of the ventricles and are called purkinque fibers
purkique fibers
is once the R&L bundle fibers have reaches the verticles from the septum and cause the verticles to contract from the bottom to top
if the SA node becomes damaged the Av node can take over and run the heart they recieve info from the brainif the SA node becomes damaged the __ node can take over and run the heart they recieve info from the brain
AV
medulla oblongata
is the cardiovascular center that send signals to the SA node and the AV node
purpose of the heart
pump blood to get oxygen to the cells
natural pacemaker of the heart
SA node
autonomic nervous system
controls all your involuntary nervous systems
parasympathetic
normal ANS state when you are just ok
sympathetic
flight of fight ANS this tries to take over if you are inder alot of stress alot of times
vagus nerve
originates in the medulla comes off the parasympathetic
sends to the SA n AV node n in response the heart rate changes
accelerate nerve
sympathetic nerve sends signal to SA n AV nerve and in respons to that the heart rate changes ect.
cerebrum
emotions, conscious thoughts
hypothalumus
sex, agression, thirst, anger
pressoreceptors
located in the carotoids n aorta atreries and monitor blood pressure so this effects the BP
what is in the medulla oblongata or cardivascular center?: (things that go with it)
cerebrum
pressorrecetors
hypothalumus
AV node
SA node
vagus nerve info:
effects the stomach and alot of other nerves originate sin the medulla
what effects heart rate go in details
body temp effects heart rate
fever- heart rate goes up
freezing- goes down
electrolyte balance to much can effect K n CA
what effect heart rate
body temp
electrolyte balance
arrhythmias
a variation in normal heart rate sometimes they occur normally and sometimes due to disease or injury
tachycardia
an abnormially fast heart rate is when you have over 100 beats per minute
bradycardia
a slow heart rate less than 60 beats per minute
premature heart beat
beat occurs before it is expected to occur
types of arrythmias:
1.
2.
3.
4.
5.
1.tachycardia >100 per min
2.bradycardia <60 per min
3.premature heart beat- occur before expexted to occur
4.flutter-250-350 per min are complete beat per min due to emotions
5.fibrillation- rapid uncordinated heart beat
flutter
250-350 per min are complete beat per min due to emotions
fibrillation
rapid uncordinated heart beat
cardioversion
the only way to stop fibrillation is defibrillation , is where you reset the heart if sucessful
acetocholine
common nueron tranmitters in the heart
blood vessles types:
1.
2.
3.
4.
5.
arteries
arterioles
capilleries
venules
veins
all except cappilaries have layers to walls call tunic
tunica intima
is E.T and C.T secretes substance and prevents the platelets from sticking so you dont get clotting, helps regulate BP
tunic
all layers except capillaries have this layer in the blood vessels
vasoconstriction
vessels lumin gets smaller BP goes UP
vasodilution
BP goes down blodd vessels get bigger
tunica media
middle layer most of your aterial wall mostly smooth muscle and some elasctic connective tissue is more developed in atreies than in veins controlled by ANS
tunica adventitia
outer most layer, primarily E.T, is for protection and attaches to tissue
Blood vessels types:
arteries
arterioles
capilleries
venules
veins
layers of blood vessels:
tunica intima
tunica media
tunica adventitia
goes inner to outer
only vessels that we can exchange waste and oxygen is what and by what
capillaries, simple diffusion
arteries/arterioles
have all the layers and very developed tunic media(smooth muscle)
- has elastic tissue
-is under the hihest pressure compared to all the vessesles
-primarly responders to BP
-carries blood away from heart
-oxyigenated blood except pulmonary arteries(are two)
what do arteries do as in blood
carry blood away from heart is oxyigenated blood except pulmonary arteries(are two)
disorders in arteries/arteioles
1.aneurism
2.atherosclerosis
aneurism
weakin anterior wall and over time the wall gets bigger and bigger and you can bleed to death and die things prexpose you to this high BP ect.
atherosclerosis
hardening of the arteries, gets plaque biuld up(LDL)
what does not carry oxygenated blood that is an arterie?
pulmonary
cappilaries
-exchange gases, nutrients, waste here (o2, co2)
-areas with lots of cappilaries is called capillarie beds
-simple squamous e.t
-selective permeable membrane- decide what goes in
-one cell thickness
-little or no pressure
capillary beds
areas with lots of capillaries
selective permeable membrane
gets to decide somewhat what goes in and out mostly in brain capillaries, called blood brain barrier
blood brain barrier
most selective permeable capillary bed in the brain decides what goes in and out is somewhat bad because if you get sick your brain will not let in medicine in your brain if your sick
arteries get pressure from
heart
cappilaries get pressure
from fliud
there is three ways you move things along capillaries walls
1.simple dissufion
2.filtration
3.osmotic pressure
are all passive transport- require no energy
filtration
fliud pressure, hydrostatic pressure
passive transport
requires no energy
osmotic pressure
movement of water from greater to lesser concentration by changing thenumber of ions
what are three types of passive transport
1.simple dissufion
2.filtration
3.osmotic pressure
veins/venules
-have the three tunics but are not as developed
- has very little muscle
- always carry blood to the heart
-carry deoxygentaed blood
- under low pressure
- is fliud(hydrostatic)
-
veins always carry blood were
to the heart
what carry deoxygenated blood?
pulmonary, veins goes to the lungs to the heart
where is the deoxygenated blood goin and enetering
RA goes to the lungs to the heart
veins pressure is
hydrostatic pressure (fluid)
blood pressure move blood in
arteries
how do we move blood in veins/venules
1.hydrostic pressure
2.skeletal muscle- number 1 way
3.breathing
4.valves- prevent backflow of blood
valves
prevent backflow of blood
phlebitis
inflammation of a vein, caused by injury or accident, caused by disease, or surgury
blood clots
form in veins/venules
thrombophlebitis
blood clot in vein and inflammation
vericose veins
superficial veins close to the surface and the valves start to wear out
what are the two vein disorders
phlebitis
varicose veins
factors influencing arterial BP:
heart action
blood volume
peripheral resistance
viscocity
what are all the vessel disorders
artherosclerosis,aneurism,phlebitis,varisoce veins
viscosity
is the thickness of the blood
- our body can change this
how do you find cardiac output?
is the amount of blood that exits into the RV per min SV x HR = BPM
cardiac output
SV X HR = BPM
heart action
the amount of blood that exits the RV per sec
peripheral resistance
resistance to blood flow due to friction between the blood and the wall of blood vessels
heart action breaks into
stroke volume
cardiac output
stroke volume
the volume of blood the discharged from a ventricle with each contraction
describe the heart of a bird
two atria, two ventrricles, right and left heart seperated, complete double circulation
what is the name of the outermost layer of the pericardium
ribrous pericardioum
what is the middle layer of the heart wall called
myocardium
what is the atroventricular orfice
an opening between a atrium n ventricle
what vessle drains the blood from the heart walls into the right atrium
coranary sinus
where are the chordae tendinae located
between the papillary muscles and the cusps of the heart valves
ischemia means
blood oxygen defiency
a heart attack is also known as
myocardial infartion
during artial systole the atria are
contracting
ventricular relaxion is also known as
venticular diastole
inflammation of the endocarium is called
endocarditis
what serves as the natural pacemaker of the heart
SA node
what is the functional syncytium
a mass of merging cells that act as a unit
what nerves of the parasympathetic nervous system carry impulses cont. to the S-A and A-V nodes
vegus nerves
where do vegus nerves originate
medulla oblongata
what two important ions that influence heart action
calcium Ca, potassium K
a slow heart rate is called
bradycardia <60 bpm
fibrillation
rapid uncontrolled heart contractions
what is the name given to the innermost layer of the arterial wall
tunica intima
decreasing the diamater of a blood vessel is called
vasoconstriction
what are the smallest vessels
capillaries
what are the ways that substance move through capillary walls
diffusion, osmotic pressure, filtration
what type of blood vessels contain valves
vein/venules
an inflammation of a vein is called
phlebitis
the friction between the blood and vessel walls is known as
peripheral resistance
blood pressure rises as blood viscosity
increases
what are two mjor circulatory pathways
pulmonary, systemic
what is the only artery to carry deoxygenerated blood?
pulmonary artery
where is the mitral valve located
between the right n left atrium
a drop of blood is in the right ventricle. where does it go nxt?
through the pulmonary semilunar valve into the pulmonary arteries
a drop of blood is in a pulmonary vein where will it go nxt?
in to the left atria
a drop of blood is passing through the tricupsid valve where is it going
into the RV
a drop of blood is in the inferior vena cava where is it going next
to the right atrium
pulmonary circulation/Systemic
RA
RV
lungs
Systemic:
LA
LV
BODY
blood flow through heart give order:
RA,tricupsid valve, RV,pulmonary semilunar valve,pulmonary trunk
pulmonary artery
lung tissue(pulomnary circ)
pulmonary veins
LA,Bicuspid valve,LV,aortic semilunar valve,aorta,bosy tissue(systemic circ)
superior n inferior cava