contractile cells of the heart - account for ___% of the entire heart tissue - responsible for _____ of the heart - activated by change in ________

99 contracting membrane potential

AV NODE - found in the ____ of the ______ - collects impulse from —— through the internodal pathway and passes it to the _____ or_____

floor right atrium SA AV bundle or bundle of his

APEX OF THE HEART - formed by the _____ part of the left ventricle - lies post to the __th inter coastal space in adults - it’s the region of ____

inferio lateral 5 maximal pulsation

BORDERS OF THE HEART - 4 - (1)right border- is made up of the right ____ - (2)left border- made up of left _____ ,left ____ - (3)inferior border-mainly ____ and _____ - (4)superior border-_____ atrias,____ auricles, and the _____

atrium ventricle auricle right ventricle; left ventricle both both great vessels

The Heart Flashcards by Iseoluwa Ojo

contractile cells of the heart

account for ___% of the entire heart tissue
responsible for _____ of the heart
activated by change in ________

contracting

membrane potential

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conducting cells of the heart

-responsible for ____ing and ____ing impulses in the heart

generat

distribut

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conducting cells of the heart have autonimity

T/F

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SA and AV nodes are the _____ of the heart

pace setters

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SINOATRIAL NODE(SA)

found in the (anterior or posterior?) wall of the ____
contains pace maker cells
generates impulse and sends it to the ____ through the _____ pathways

Posterior

right atrium

AV node

internodal

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AV NODE

found in the ____ of the ______
collects impulse from —— through the internodal pathway and passes it to the _____ or_____

floor

right atrium

AV bundle or bundle of his

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SA-AV-bundle of his-bundle branches- ______

purkinje fibers

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the purkinje fibers distribute the impulse to the contractile cells, trigger _______ after _______ has been completed

ventricular contraction

atrial contraction

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then ______ makes up the bulk of the heart

Myocardium

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CARDIAC TAMPONADE

as a result of pericardial _____
leading the ______ on the heart
and the vessels not being able to expand properly

effusion

too much pressure

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HEART

muscular pump
describe how blood moves

blood from SVC and IVC enter rt atrium, then rt ventricle, then through the pulmonary trunk to the pulmonary arteries to the lungs then oxygenated blood comes through the pulmonary veins to the lt atrium then the left ventricle then aorta to the rest of the body

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APEX OF THE HEART

formed by the _____ part of the left ventricle
lies post to the __th inter coastal space in adults
it’s the region of ____

inferio lateral

maximal pulsation

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BASE OF THE HEART

formed mainly by the ______ and. ______ back part of the _____
bounded above by the _______________
bounded below by the post part of the ______ which contains the ____

left atrium

small

rt atrium

bifurcation of the pulmonary artery

cornonary sulcus;

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BORDERS OF THE HEART

4
(1)right border- is made up of the right ____
(2)left border- made up of left _____ ,left ____
(3)inferior border-mainly ____ and _____
(4)superior border-_____ atrias,____ auricles, and the _____

atrium

ventricle

auricle

right ventricle; left ventricle

both

great vessels

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RIGHT ATRIUM

-receives (arterial or venous?) blood from the ___ and ____ through its_____ wall

Venous

SVC and IVC

posterior

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smooth posterior wall of right atrium is called ______

sinus venarum

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rough anterior wall of right atrium is due to _____

pectinate muscles

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fossa ovalis on the _________ piercing

inter atrial septum

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Fossa ovalis is a _____ of the _____ used to ____ blood from the _____ to ______ at the _____ level

remnant

foramen ovali

shunt

right atrium to the left

embryonic

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Right atrium doesn’t have AV orifice

T/F

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smooth and rough wall of the right atrium are separated internally by _____ and externally by ____

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crista terminalis

sulcus terminalis

LEFT ATRIUM

-receives (oxygenated or deoxygenated ?) blood from the ______ that pierce its (ant or post?) walls

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oxygenated

pulmonary veins

Post

Left atrium

Rough post wall
-smooth anterior walls pectinate muscles

T/F

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F
F

Flip it

Whose walls are thicker , right or left atrium

Who has a larger auricle , right or left atrium

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Left atrium; it’s walls are thicker than rt atrium

Right atrium has a bigger auricle

RIGHT VENTRICLE - receives blood from the ______ through the ____ which is ___ - tapers to form the _____ that leads to the ______ - the interior has muscular elevations called ____ - conical muscular projections on its wall called ____

right atrium AV orifice tricuspid conus arteriosus; pulmonary trunk orifice traberculae carnae papillary muscles

Right ventricle _________ connect the papillary muscles to the _____ of the cusps of the tricuspid valve - the tricuspid valve has the cusps(____,____,____) - a _______ runs from the base of the IVseptum to the base of the ant papillary muscles

chodae tendinae sides anterior,posterior,septal moderator band

LEFT VENTRICLE -receives blood from the _____ through the ______ valve -tapered to form the ________ leading to the aortic orifices

left atrium mitral/bicuspid smooth wall aortic vestibule

Which ventricle performs more work Which ventricle has thicker walls Which ventricle has less numerous traberculae carne Which ventricle has larger papillary muscles

Left Left Right Left

AORTA - largest artery - pumps blood to the whole body besides the ____ - 3 parts (1) ascending aorta :lies within the ____ and has 2 branches of ________ (lt and rt) (2) aortic arch:branches are the ____,___,___ (3) descending aorta: runs straight down through the ___ to supply the ____

lungs pericardium; coronary arteries right brachiocephalic trunk,left subclavian artery,left common carotid artery diaphragm; abdomen

Clinical issue:Aortic dissection When there’s a ___ in the wall of the aorta, lead to ____ for blood flow. Blood in the space created by the tear has no where to go and just keep ____ and ____ ,reducing the blood flow through the lumen, ____ing the wall of the aorta and leading to further dilation causing _____

tear two passage increasing and expanding weaken Aortic aneurysm

PULMONARY TRUNK - ___cm long, __cm wide. - bifurcates into _______ at the level of __-___

5; 3 two pulmonary arteries T5-T6

Right pulmonary artery goes to ___ lung -left pulmonary artery goes to the ___ lung

right left

Which pulmonary artery is longer and which is thicker?

Right

PULMONARY VEINS - receives (oxygenated or deoxygenated ?) blood from the ___ and supply to the ___ side of the heart - there are __ pulmonary veins

Oxygenated lungs left 4

SVC - receives blood from the every where (above or below?) the diaphragm EXCEPT _____ and ___ - formed by the merging of the ______ veins - drains into the (superior or Inferior?) portion of the _____ at the level of the ___ rib

above lungs and heart brachiocephalic veins Superior right atrium third

IVC - blood from all that is (above or below?) the diaphragm - formed by the merging of the ______ in the _____ - enters the pericardium at ___ - drains into the (supper or inferior?) portion of the right atrium

Below rt and lt iliac common veins pelvis T8 Inferior

ARTERIES - left(dominant in ___% of people) and right(usually dominant in people) coronary arteries from the ascending aorta - lca and rca take (oxygenated or deoxygenated?) blood to the ____ - lca and rca run in the _____

10 Oxygenated heart AV groove

RCA branches : - _______ artery - ______ artery - __ branch - ____ branch

posterior interventricular right marginal SA AV node

LCA branches - _____ artery - _____ artery - _____ artery

anterior IV left marginal circumflex

RCA supplies - ____ atrium - ____ ventricle (most part) - small part of ___ ventricle - _____ of _____ (posterior part) - ______ sulcus - SA (___% of people)and AV NODE(__% of people)

right right left 1/3 of AV septum posterior IV 60; 80

LCA supplies - ___ atrium - most of ___ ventricle - ____ ventricle(small part) - ____ sulcus - SA node in ____% of people

left left Right anterior IV 40

VEINS! Of the heart -originating from the ___ in the ____ - ____ vein of left atrium - _____ vein(l) - ___cardiac vein (_____) - ____of left ventricle - several small ant cardiac veins

coronary sinus coronary sulcus oblique marginal smallest; venae cordis minimae post vein

______ vein runs with ant IV artery _______ vein runs with post IV artery _______ vein also runs with post

great cardiac middle cardiac small cardiac

LYMPHATIC DRAINAGE - lymph flows from the ____ CT and ___ CT into the ______ plexus - the lymph vessels pass through the _____ and follow the arteries

myocardium endocardium sub epicardial coronary groove

Referred pain - damage of the tissue of the heart can lead to pain being felt in _____ and in the ___ and ____ - this pain can be felt in region because some of the ___ in this region have their ___ in the same ______ and secondary neuron spinal segment as the _______ from the heart

that region left jaw left arm dermatomes cell body dorsal root ganglion general visceral afferent

INNERVATIONS of the heart - innervated by ____ - receives contributions from left and right ___ nerves and _____

cardiac plexus vagus sympathetic trunk

Cardiac plexus is made up of ____ and _____ systems it can be divided into 2, _____ and ___ nerves

para and sympa deep and superficial

deep cardiac nerves (between _____ and _____ - superficial cardiac nerves ((above or below?) _____ - small mixed fibers(contains both para and sympa fibers ) that branch off to supply the _____,____, and ____

arch of aorta and bifurcation of trachea Below; arch of aorta myocardium, coronary vasculature, and conducting system

PARA innervation - receive contribution from only the ____ nerve - (reducing or increasing ?) heart rate - (reducing or increasing ?) rate of contraction - vaso____ of coronary arteries SYMPA innervations - ___ease heart rate - ____ease rate of contraction - Vado____

vagus Reducing Reducing constriction Incr Incr dilation

CARDIAC AFFERENTS - carry signals to the ____ - Vagal cardiac nerve gives feedback on ____

CNS blood pressure

The Heart Flashcards

(50 cards)