A&P Circulatory System

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Which one of the following blood vessels carries oxygenated blood?

Pulmonary Veins

The left atrium receives blood from the ________.

Pulmonary veins

The term that means heart contraction is ________.

Systole ('lub')

The friction blood encounters as it flows through the vessels is called ________.

The friction blood encounters as it flows through the vessels is called ________.

What information can a clinician obtain from an electrocardiogram (ECG)?

abnormality in electrical activity of heart

The path of blood flow within the systemic vascular system is ________.

arteries, arterioles, capillary beds, venules, veins

Which of the following is a warning sign of an impending myocardial infarction?

angina pectoris

The largest artery in the body is the ________.

aorta

Which valve guards the base of the aorta and opens when the ventricles are contracting?

aortic semilunar valve

The valves located between the atria and ventricles are known as the ________ valves.

atrioventricular (AV)

Where is the hepatic portal vein located?

between the stomach, intestines, and the liver

Pulmonary arteries transport ________.

blood rich in carbon dioxide to the lungs

What anchors the flaps of the atrioventricular valves to the walls of the ventricles?

chordae tendineae

The heart sounds "lub" and "dup" result from ________.

closure of heart valves

What blood vessel do you palpate when checking the pulse in your neck?

common carotid artery

Oxygenated blood nourishing the myocardium comes from vessels that branch off the aorta called ________.

coronary arteries

Which of the following is a risk factor for developing essential hypertension?

genetics obesity race

What is a possible complication to arteriosclerosis?

heart attack

Which of these events is NOT associated with ventricular systole?

heart is relaxed

Sustained elevated arterial blood pressure above 140/90 mm Hg is a condition known as ________.

hypertension (high blood pressure)

What is the function of the heart valves?

prevents backflow

The alternating expansion and recoil of an artery that occurs with each beat of the left ventricle creates a pressure wave known as a(n) ________.

pulse

Which one of the following represents the correct path for the transmission of an impulse in the intrinsic conduction system of the heart?

sinoatrial (SA) node, atrioventricular (AV) node, atrioventricular (AV) bundle (bundle of His), right and left bundle branches, Purkinje fibers

A pulmonary embolism can be a direct result from which of the following conditions?

thrombophlebitis

Through which valve will blood flow when leaving the right atrium?

tricuspid valve

Arteries branch into smaller vessels known as arterioles.

true

Exchanges between blood and tissue cells occur in capillary beds.

true

The sinoatrial (SA) node is the pacemaker of the intrinsic conduction system of the heart.

true

The correct sequence of layers of a typical blood vessel, from superficial to deep, are ________.

tunica externa, tunica media, tunica intima

The narrowing of blood vessels is known as ________.

vasoconstriction

During mid-to-late diastole, blood flows from the atria to the ________.

ventricles

The average heart beats about ________ times per minute.

75

Blood leaves the left ventricle through an artery known as the ________.

Aorta

The two superior receiving chambers of the heart are known as the ________, while the two inferior discharging chambers of the heart are known as the ________.

Atrium; Ventricles

What is the common cause of vascular stenosis?

endocarditis

Diastolic pressure is the blood pressure in the arteries at the peak of ventricular contraction.

false

What structure divides the left atrium from the right atrium?

interatrial septum

The walls of the ________ are substantially thicker because that chamber acts as the more powerful systemic pump of the heart.

left ventricle

When the ventricles contract, the bicuspid (mitral) valve prevents blood from flowing from the ________.

left ventricle to the left atrium

What organ receives blood from the hepatic portal vein?

liver


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