Lesson 14

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foramen ovale

In fetal circulation, this structure diverts blood from the right atrium of the heart to the left atrium of the heart. ductus arteriosus foramen ovale ligamentum teres ductus venosus

an elastic artery

The aorta is an example of a capillary. an elastic artery. a muscular artery. a large vein.

inferior and to the left

The apex of the heart is located inferior and to the left. inferior and to the right. superior and to the right. superior and to the left.

heart valves are made of dense connective tissue

Which is true of heart valves? Heart valves are made of dense connective tissue. Heart valves are made of epithelial tissues. Heart valves allow the backflow of blood. A myocardial infarction occurs in heart valves

pulmonary vein

Which of the following vessels contains oxygen-rich blood? hepatic portal vein umbilical artery pulmonary artery pulmonary vein

true

The pulmonary valve is anterior to the aortic valve. True False

arteries

Vessel structure is composed of a tunica intima, tunica media, and tunica externa. Which of these has the thickest tunica media? arteries veins capillaries arterioles

epicardium

What layer of the heart wall is also known as visceral pericardium? endocardium myocardium fibrous pericardium epicardium

ductus venosus

What structure in fetal circulation bypasses blood away from the liver? ductus venosus foramen ovale ductus arteriosus umbilical artery

right ventricle

Where does blood flow immediately after passing through the tricuspid valve? lungs left ventricle right ventricle right atrium

atherosclerosis

Which term describes a progressive disease of the elastic and muscular arteries that leads to thickening of tunica intima and narrowing of arterial lumen from fatty plaque? cerebrovascular accident aneurysm atherosclerosis

sinusoid

Which type of capillary is found in the bone marrow, and has a unique structure that allows blood cells to easily enter and exit the capillary? sinusoid myoid fenestrated continuous


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