問題一覧
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size of your heart
fist
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location of the heart
superior surface of diaphragm left of the midline anterior to the vertebral column, posterior to the sternum
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functions of pericardium
protects and anchors the heart prevents overfilling of blood allows the heart to work relatively friction free environment
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it is the visceral layer of the serious pericardium
epicardium
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it is a cardiac muscle layer forming the bulk of the heart
myocardium
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vessels returning blood to the heart
right and left pulmonary vein superior and inferior venae cavae
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vessels conveying blood away from the heart
aorta right and left pulmonary arteries
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it is the receiving chamber of the heart
atria
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it pumps blood to pulmonary trunk and supplies blood to the lungs
right ventricle
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it pumps blood into the aorta, and supply systemic circulation
left ventricle
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valves lie between atria and the ventricles
atrioventricular
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valves lie between left ventricle and the aorta
aortic semilunar
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valves lie between right ventricle and pulmonary trunk
pulmonary semilunar
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it generates impulses 75 times/minutes
sinoatrial node
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it delays impulses 0.1 second
atrioventricular node
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it ensures blood delivery to heart even major vessels are occluded
collateral routes
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it is the unstable resting potential
pacemaker potential
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it is use for rising phase of the action potential
calcium influx
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it carry impulses towards the apex of the heart
bundle branches
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it carry impulses to the heart apex and ventricular walls
purkenji fibers
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contraction of the heart muscle
systole
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relaxation of the heart muscle
diastole
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it is where the atria relaxes
ventricular systole
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causes of congestive heart failure
Coronary atherosclerosis persistent high blood pressure multiple myocardial impacts dilated cardiomyopathy
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age relating changes affecting the heart
sclerosis and thickening of valve flaps decline in cardiac reserve fibrosis of cardiac muscle atherosclerosis
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pericardium is composed of couple walled sac
superficial fibrous pericardium deep two layers serous pericardium
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3 branches of ascending aorta
brachiocephalic left common carotid subclavian arteries
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pathway of blood through the heart and lungs
ra--->tv--->rv rv-->psv--->pa--->L L--->pv--->La La--->bv--->Lv Lv--->asv--->a a--->sc
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discharging chambers of the heart
ventricles
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taking blood to the tissues and back
arteries arterioles capillaries venules veins
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it directly connects an arteriole to a venule
vascular shunt
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it is exchange vessels
true capillaries
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it is a pressure wave of blood
pulse
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pressure at the peak of ventricular contraction
systolic
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pressure when vintricles relax
diastolic
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it is the regulation by altering blood volume
renal factors
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it has vasodilation effects
heat
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it has vasoconstriction effect
cold
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various substances that can cause increases or decreases
chemicals
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blood pressure:effects of factors
temperature chemicals diet
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human normal range systolic
140-110 mm Hg
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human normal range in diastolic
80-75 mm Hg
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it is often associated with illness
hypotension
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low systolic
hypotension
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high systolic
hypertension
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develops in the Embryo and pumps by the fourth week
tube heart
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pores
fenestration
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hormonal control
renin
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mark atrial walls
pectinate nuscles
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air flows in
inspiration
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air flows out
expiration
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decreased in pulmonary ventilation
hypoventilation
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increased in pulmonary ventilation
hyperventilation
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lifesaving technique that is used to open a windpipe that is suddenly obstructed
Heimlich maneuver
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how long is male urethra
14 cm
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how long is male urethra
14 cm