Chapter 11 MAP
Which of the following occurs when the pressure in the ventricles rises higher than the pressure in the atria?
atrioventricular valves close
Where does the sinoatrial node send an impulse after it initiates the electrical signal?
av node
What blood vessel do you palpate when checking the pulse in your neck?
common carotid artery
Which of the following supply the myocardium with oxygen-rich blood?
coronary arteries
Which of the following is the correct order of events? congestive heart failure, pulmonary edema, coronary atherosclerosis coronary atherosclerosis, congestive heart failure, pulmonary edema coronary atherosclerosis, pulmonary edema, congestive heart failure pulmonary edema, coronary atherosclerosis, congestive heart failure
coronary atherosclerosis, congestive heart failure, pulmonary edema
What is a possible complication to arteriosclerosis?
a heart attack
What is the ultimate cause of orthostatic hypotension?
a slowly reactive sympathetic nervous system
After listening to Janetta's heart for several seconds, her doctor told Janetta that she has an incompetent right atrioventricular (AV) valve. What did Janetta's doctor hear that led to that conclusion?
a swishing sound
Part complete Which of the following will reduce blood pressure?
decreasing peripheral resistance
Part complete By what pathway does oxygen leave capillaries to supply body tissues?
diffusion through capillary cell membranes
Which of these allows nutrient-rich blood from the placenta to bypass the fetal liver and enter the inferior vena cava?
ductus venosus
What is a common cause of valvular stenosis?
endocarditis
An increased firing of the parasympathetic nervous system causes increased cardiac output. True False
false
Cardiac output is the product of the stroke volume and the systolic blood pressure. True False
false
During ventricular diastole, the bicuspid and tricuspid (mitral)valves are closed. True False
false
Hypotension is diastolic blood pressure below 100 mm Hg. True False
false
The QRS wave on an electrocardiogram is representative of ventricular repolarization. True False
false
The semilunar valves prevent the backflow of blood into the atria when the ventricles are contracting. True False
false
Which of the following is a risk factor for developing essential hypertension?
genetics, obesity, and race
Carla was born with a ductus arteriosus that did NOT close properly. What organ would be directly affected by this congenital heart defect?
lungs
What is the function of the heart valves?
prevents backflow of blood
Which of these describes a fenestrated capillary?
special capillary type with small pores found in tissue where absorption is important
Which of these will decrease heart rate?
stimulation by vagus nerves
What term refers to the contraction of the heart?
systole
Jordan is told that while his atria are beating normally, his ventricles are beating slower than normal. His doctor suspects a heart block. Damage to what part of Jordan's heart is causing this problem?
the AV node
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
Blood cells and proteins typically cannot pass across the walls of capillaries and are thus prevented from leaving or entering the capillaries. True False
true
Blood pressure is highest in the arteries and declines to zero or negative pressure in the vena cavae. True False
true
The average heart beats approximately 75 times each minute at rest. True False
true
The three branches of the aortic arch are the brachiocephalic trunk, left common carotid artery, and the left subclavian artery. True False
true
Which of these layers is found in capillary walls?
tunica intima
Which of the following will slow the heart rate?
vagus nerve stimulation
what will increase arterial blood pressure (BP)?
vasoconstriction of arteries
Blood pressure in these vessels is low or even negative
veins
Some of these larger vessels have valves to prevent backflow
veins
Superior and inferior vena cava are classified as these types of vessels
veins
These vessels have thinner walls and transport oxygen-poor blood
veins
These vessels return blood to the heart
veins
Which type of vessel has a thick tunica media?
artery
Where is the radial artery located?
lateral forearm
What chamber of the heart will blood enter after passing through the bicuspid valve?
left ventricle
What part of the heart's intrinsic conduction system carries impulses into the interventricular septum?
AV bundle
What information can a clinician obtain from an electrocardiogram (ECG)?
abnormality in electrical activity of heart
Which of the following is a warning sign of an impending myocardial infarction?
angina pectoris
The aorta is classified as one of these vessels
arteries
These vessels carry blood away from the heart
arteries
These vessels have thicker walls and a heavier tunica media
arteries
Where is the hepatic portal vein located?
between the stomach, intestines, and the liver
Nutrient and gas exchange occur in these vessels
capillaries
Venules drain these tiny beds of vessels
capillaries
Pericarditis is most closely related to which of the following cardiac conditions?
inadequate amounts of serous fluid
Part complete Which arteries carry oxygen-rich blood into the cranial cavity?
internal carotid arteries and vertebral arteries
Which vessels drain blood from organs of the pelvic cavity?
internal iliac veins