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heart
difficult vocab only
18
Anatomy
Undergraduate 4
12/18/2011

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Term
pericardial effusion
Definition
too much fluid in pericardial cavity, heart compressed and pump ability is compromise
Term
pericardiocentesis
Definition
insertion of needle into pericardial cavity to withdraw blood.
insertion is between sternum and lower rib cage.
Term
pericardium and layers of heart
Definition
fibrous outer pericardium, parietal layer of serous pericardium (lining pericardial cavity), epicardium (visceral pericardium). mycardium endocardium
Term
visceral and parietal layers of pericardium are formed by what kind of tissue
Definition
simple squamous
Term
histology of heart wall
Definition
epicardium/visceral pericardium: connective tissue, simple squamous, direct layer to cavity. outermost
myocardium: thickest muscle
endocardium: direct contact with blood. innermost.
Term
Cardiac muscle/myocytes
Definition
involuntary
can contract without innervation
1/nuclei per cell
a lot of mitochon
gap junctions allow ions to diffuse at intercalated disk Desmosomes hold neighboring cells together
Term
LUB DUB
Definition
LUB= AV VALVES SHUTTING
DUB=SEMILUNAR VALVES SHUTTING
Term
HEART MURMUR
Definition
BLOOD FLOWING BACKWARDS VALVE NOT WORKING WELL
Term
SYSTEMIC
PUMONARY
AND CORONARY CIRCULATION
Definition
Term
HEART ATTACK/MYOCARDIAL INFARCTION.
Definition
CORONARY ARTERIES NOT PROVIDING ADEQUATE BLOOD TO THE MYOCARDIUM
Term
ATHEROSCLEROSIS
Definition
HARDENING OF ARTERIES
OBSTRUCTION OF ARTERIES
Term
SURGICAL PROCEDURES TO TREAT OBSRCUTED CORONARY ARTERIES
Definition
ANGIOPLASTY, INSERT DYE, INSERT CATHEDER INFLATE BALOON INSERT STENT
CORONARY ARTERY BYPASS GRAFTING (CABG) DETOUR, PUT IN NEW VESSEL AROUND BLOCKED VESSEL.
INVASIVE RECOVER.
(STEM CELL THERAPY IS NEW THIRD OPTION)
Term
CONDUCTING SYSTEM
Definition
HEART MAINTAINS CONSTANT LEVEL OF ACTIVITY DUE TO AN INTRINSIC INNERVATION. CONTRACTS ON REGULAR BASIS
Term
COMPONENTS
Definition
SA NODE IS THE START
AV NODE IS IN ATRIUM BUT CONTRACTS VENTRICLE
Term
CONDUCTION SYSTEM NUMBER OF BEATS WITHOUT MODIFICATION
Definition
110/MINUTES
Term
MODIFICATION OF THE HEART BY THE AUTONOMIC NERVOUS SYSTEM
Definition
SYMPATHETIC INCREASES HEART RATE
PARASYMPATHETIC VIA VAGUS NERVE DECREASES HEART RATE
Term
IRREGULAR HEARTBEAT IS ARYTHMIA
Definition
Term
PACEMAKER
Definition
CAN ARTIFICIALLY STIMULATE HEART CONTRACTION WITH A PACEMAKER
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