-
Thickest walled, powerfull chamber of the heart
Left Ventricle
-
Large vessels returning blood to the right atium
Superior and inferior vena cava
-
Thinnest walled blood vessels
Capillaries
-
Inner lining of the heart
Endocardium
-
Last valve which blood passes through on its way out of the heart
Aortic valve
-
Active phase of the cardiac cycle _________ resting phase __________
-
Outer layer of the heart
Epicardium
-
Muscular layer of the heart
Myocardium
-
Normal heart mechanism, but slow
Bradycardia
-
Normal heart mechanism, but fast
Tachycardia
-
Range for normal adult heart rate
60-100
-
Valve between left atrium & ventricle
Mitral
-
Tricuspid valve seperates which two chambers
- Right atrium,
- Right ventricle
-
Force the ventricles must pump against
After load
-
Superior vena cava delivers blood to the
Right atria
-
Outside covering or sac surrounding the heart
Pericardium
-
Thin-walled upper heart chambers, receiving blood from the
Atria
-
Valve between right ventricle & pulmonary artery
Pulonary valve
-
Umbilical cord- how many veins, how many arteries?
1 vein & 2 arteries
-
List in order the components of the hearts electrical conduction system
- SA node
- AV node
- Bundel of his
- Bundle branch
- Perkinje fibers
-
Medical term for heart attack
Myocardial infarction
-
Cause of pulmonary vasoconstriction
- Hypoxia
- Hypercapnia
- acidema
- High altitude
-
Vessels which return blood to the heart?
Veins
-
Vessels which supply blood, O2, neutrients to the heart muscle?
Coronary arteries
-
Universal blood doner type
O
-
Heart's rest period between contraction?
Diastole
-
Vessels which carry blood, O2, nutrients out to the body?
Arteries
-
Average PO2 in the umbilical arteries during fetal life?
20mm Hg
-
Differences between fetal circulation & adult circulation?
- Foramen ovale
- Ductus arteriosis
- Ductus venosus
-
Most oxygenated blood from the placenta enters the _______ via the ______
Right atrium, Umbilical cord
-
Alveoli count in a normal newborn?
24 million
-
Approximate tidal volume in a normal newborn
15 ml
-
Medical term for red blood cells?
Erythrocyte
-
Medical term for white blood cells?
Leukocyte
-
Three primary functions of the blood?
Carry O2, Nutrients, & defend aginst infection
-
What happens in the heart during the P wave?
Atrial contraction
-
What happens in the heart during the QRS complex?
Ventricular contraction
-
What happens in the heart during the T wave?
Ventricular relaxtion
-
What is the normal duration of the PR interval?
.12 to .20 sec.
-
CO=______X______
- SV=stroke volume
- HR=heart rate
-
BP=_________X________
- CO=cardiac output
- SVR=systemic vascular resistance
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