QUIZ 6 CH 10 Flashcard | Flashcards-library.com

__________ is a steroid hormone secreted by the adrenal cortex which stimulates kidney salt reabsorption. A ADH B Aldosterone C Renin D Angiotensin

A condition in which there is a fall in blood pressure when standing that is not compensated for by the baroreceptor reflex is called A Postural hypotension B Postural bradycardia C Postural tachycardia D Postural atherosclerosis

A greater pressure in the right ventricle than the aorta causes the aortic semilunar valve to open. TF

A renin secreting tumor would induce hypertension. TF

According to the Frank-Starling Law of the heart, as contraction strength increases the stroke volume A Decreases B Increases C Shows no change

ADH secretion is stimulated when osmoreceptors in the hypothalamus detect a decrease in blood osmolality TF

Angiotensin I is formed from the plasma protein ____ by the action of the enzyme _____. A Angiotensin II; renin B Angiotensinogen; ACE C Angiotensinogen; renin D Renin: ACE

Antidiuretic hormone and aldosterone both stimulate water conservation by the kidneys TF

Aspirin inhibits blood clotting by directly preventing A Thrombin formation B Platelet plug formation C Fibrin formation D Clot retraction

At rest, blood flow is greatest in the A Skin and GI tract B GI tract and liver C Brain D Kidneys and skin

Atrioventricular valves close at the A beginning of atrial systole. B beginning of ventricular systole. C end of atrial systole. D end of ventricular systole.

Blood pH should be 7.55 - 7.65. TF

Both medullary vasomotor and cardiac control centers integrate the baroreceptor reflex. TF

Cardiac output increases as heart rate increases. TF

Closure of the atrioventricular valves occurs at the beginning of systole. TF

Damage to tissues stimulates the activation of the ______________ blood clotting pathway. A Complement B Hemophilic C Intrinsic D Extrinsic

During exercise, all of the following occur EXCEPT A Increased stroke volume B Increased cardiac rate C Shunting of blood from visceral organs to skeletal muscle and heart D Increased vasoconstriction of coronary arteries

During isovolumetric ventricular contraction ventricular pressure is A Increasing B Decreasing C Unchanged

During isovolumetric ventricular relaxation A Left ventricular pressure exceeds aortic pressure B Atrial pressure is less than ventricular pressure C Ventricular pressure is increasing D The atrioventricular valves are open

In response to increased internal temperature, blood flow to the skin will A Increase B Decrease C Remain unchanged

Increased blood flow resistance is caused by Increased blood vessel length Decreased blood viscosity Vasodilation Increased blood pressure

Individuals with an increased hematocrit would probably be anemic. TF

Serum is equivalent to plasma but lacks blood cells. TF

The _____ is responsible for producing the action potential that stimulates myocardial contraction. A AV bundle B AV node C purkinje fibers D SA node

The amount of blood ejected when the ventricles contract is called the _____ volume. A cardiac B end-diastolic C stroke D systolic

The automatic depolarization that initiates a cardiac cycle is called the _____ potential. A atrial B pacemaker C systolic D threshold

The end-diastolic volume is mainly dependent on the strength of atrial contraction.TF

The first heart sound is produced when the semilunar valves close.TF

The Frank-Starling Law of the Heart concerns the relationship between ventricular contraction strength and the degree to which the myocardium is stretched. TF

The Frank-Starling law of the heart describes an intrinsic regulation of stroke volume. TF

The most common white blood cells are phagocytic neutrophils.

The P wave of an ECG represents A Atrial repolarization B Atrial depolarization C Ventricular repolarization D Ventricular depolarization

The pressure of arterial blood is lower than the pressure of venous blood. TF

The pulmonary circulation begins at the _____ and ends at the _____. A left ventricle, left atrium B left ventricle, right atrium C right ventricle, left atrium D right ventricle, right atrium

The second heart sound is caused by the closing of the semilunar valves. TF

The second heart sound is caused by the closing of the semilunar valves.TF

The T wave in an ECG shows the electrical activity that accompanies ventricular depolarization. TF

Veins are defined as blood vessels that carry deoxygenated blood to the heart. TF

Ventricular fibrillation A Occurs when the ventricles contract in a rapid, coordinated manner B Is not life threatening C Often occurs due to circus rhythms D Is induced by defibrillators

When blood pressure drops the baroreceptor reflex responds by _____. A increasing cardiac rate B promoting vasoconstriction C promoting water reabsorption in the kidney D Both A and B are correct. E All of these choices are correct.

Which of the following would not lead to edema? A leakage of plasma proteins into interstitial fluid B high arterial blood pressure C increased plasma protein concentration D venous obstruction

Which plasma protein contributes most to osmotic pressure? A albumin B alpha globulins C beta globulins D gamma globulins