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