A&P Circulatory System
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
