Cardiovascular

30問 • 1年前

Nathan

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問題一覧

Which of the following is not part of the cardiovascular system?

Lung

What Is the Function of the Pulmonary Circuit?

Sends oxygen-poor blood to the lungs

The Outermost Membrane That Forms a Loose-Fitting Sac Around the Heart Is the __________.

fibrous pericardium

Which of the Following Represents the Correct Sequence of Structures Through Which Blood Moves From the Venae Cavae to the Lungs?

Right atrium, tricuspid valve, right ventricle, pulmonary valve

What Happens to the Valves When the Ventricular Walls Relax?

Bicuspid and tricuspid valves open.

Which of the Following Structures Does Not Require Stimulation From Nerve Fibers or Other Agents?

Sinoatrial node

What Is the Correct Sequence of Structures of the Cardiac Conduction System?

SA node, AV node, AV bundle, Purkinje fibers

In an ECG Pattern, What Event Is Represented by the P Wave?

Depolarization of atrial muscle fibers

In an ECG Pattern, What Event Is Represented by the T Wave?

Repolarization of ventricular muscle fibers

Impulses Carried to the Heart by Means of Fibers That Secrete Acetylcholine Are __________ Impulses and Cause the Heart Rate to __________.

parasympathetic; decrease

Which Type of Blood Vessel Serves as a Blood Reservoir?

Veins

The Density of Capillaries Within a Tissue Is Proportional to the Tissue's __________.

rate of metabolism

What Is the Function of Plasma Proteins in Capillary Exchange?

To maintain the osmotic pressure of the blood

During What Phase of the Cardiac Cycle Is Blood Pressure in the Systemic Arteries the Greatest?

During ventricular systole

What Does the Frank-Starling Law of the Heart State?

The greater the length of myocardial fibers, the greater the force with which they contract

In Normal Circulation, Blood Flow Usually Follows What Pattern of Vessels?

Artery, arteriole, capillary, venule, vein

The _______ Circuit Sends Oxygen-Rich Blood From the Heart to All Cells of the Body, Removes Carbon Dioxide and Other Wastes, and Returns Blood to the Heart.

systemic

What Is the Complete Set of Contraction and Relaxation Events That Constitutes One Heartbeat Called?

Cardiac cycle

What Part of the ECG Pattern Is Due to Depolarization of the Ventricles?

QRS complex

A Resting Heart Rate That Exceeds 100 Beats per Minute Is Called __________.

tachycardia

An Abnormally Slow Heart Rate (Fewer Than 60 Beats per Minute) Is Called _______________.

Bradycardia

In What Type of Blood Vessel Is the Tunica Media the Thickest?

Arteries

Which Blood Vessel Type Has the Lowest Blood Pressure?

Veins

The Volume of Blood Discharged From the Ventricle With Each Heartbeat Is Called _________.

stroke volume

How Does Heart Rate Affect Blood Pressure?

Elevated heart rate increases cardiac output, therefore raising blood pressure.

If the Aortic Baroreceptor Senses an Increased Stretch of the Aorta, How Will the Nervous System Respond?

Parasympathetic signals will be sent to decrease heart rate.

During Long Flights, It Is Recommended That You Move Your Foot up and Down Periodically, Forcing Contractions of the Muscles in the Calf. How Would This Help With Circulation?

Contraction of the leg muscles squeezes leg veins, which function as a pumping mechanism to return deoxygenated blood to the heart.

Drinking Too Much Water Would __________ Blood Viscosity and Subsequently __________ Peripheral Resistance.

decrease; decrease

Which of the Following Would Cause a Decrease in Cardiac Output?

An increase in parasympathetic stimulation

Which of the Events Below Would NOT Increase the Pressure of Blood Against the Blood-Vessel Walls?

A decrease in blood viscosity

Skeletal

Skeletal

Muscular

Muscular

Nervous

Nervous

endocrine

endocrine

Blood

Blood

問題一覧

Which of the following is not part of the cardiovascular system?

Lung

What Is the Function of the Pulmonary Circuit?

Sends oxygen-poor blood to the lungs

The Outermost Membrane That Forms a Loose-Fitting Sac Around the Heart Is the __________.

fibrous pericardium

Which of the Following Represents the Correct Sequence of Structures Through Which Blood Moves From the Venae Cavae to the Lungs?

Right atrium, tricuspid valve, right ventricle, pulmonary valve

What Happens to the Valves When the Ventricular Walls Relax?

Bicuspid and tricuspid valves open.

Which of the Following Structures Does Not Require Stimulation From Nerve Fibers or Other Agents?

Sinoatrial node

What Is the Correct Sequence of Structures of the Cardiac Conduction System?

SA node, AV node, AV bundle, Purkinje fibers

In an ECG Pattern, What Event Is Represented by the P Wave?

Depolarization of atrial muscle fibers

In an ECG Pattern, What Event Is Represented by the T Wave?

Repolarization of ventricular muscle fibers

Impulses Carried to the Heart by Means of Fibers That Secrete Acetylcholine Are __________ Impulses and Cause the Heart Rate to __________.

parasympathetic; decrease

Which Type of Blood Vessel Serves as a Blood Reservoir?

Veins

The Density of Capillaries Within a Tissue Is Proportional to the Tissue's __________.

rate of metabolism

What Is the Function of Plasma Proteins in Capillary Exchange?

To maintain the osmotic pressure of the blood

During What Phase of the Cardiac Cycle Is Blood Pressure in the Systemic Arteries the Greatest?

During ventricular systole

What Does the Frank-Starling Law of the Heart State?

The greater the length of myocardial fibers, the greater the force with which they contract

In Normal Circulation, Blood Flow Usually Follows What Pattern of Vessels?

Artery, arteriole, capillary, venule, vein

The _______ Circuit Sends Oxygen-Rich Blood From the Heart to All Cells of the Body, Removes Carbon Dioxide and Other Wastes, and Returns Blood to the Heart.

systemic

What Is the Complete Set of Contraction and Relaxation Events That Constitutes One Heartbeat Called?

Cardiac cycle

What Part of the ECG Pattern Is Due to Depolarization of the Ventricles?

QRS complex

A Resting Heart Rate That Exceeds 100 Beats per Minute Is Called __________.

tachycardia

An Abnormally Slow Heart Rate (Fewer Than 60 Beats per Minute) Is Called _______________.

Bradycardia

In What Type of Blood Vessel Is the Tunica Media the Thickest?

Arteries

Which Blood Vessel Type Has the Lowest Blood Pressure?

Veins

The Volume of Blood Discharged From the Ventricle With Each Heartbeat Is Called _________.

stroke volume

How Does Heart Rate Affect Blood Pressure?

Elevated heart rate increases cardiac output, therefore raising blood pressure.

If the Aortic Baroreceptor Senses an Increased Stretch of the Aorta, How Will the Nervous System Respond?

Parasympathetic signals will be sent to decrease heart rate.

During Long Flights, It Is Recommended That You Move Your Foot up and Down Periodically, Forcing Contractions of the Muscles in the Calf. How Would This Help With Circulation?

Contraction of the leg muscles squeezes leg veins, which function as a pumping mechanism to return deoxygenated blood to the heart.

Drinking Too Much Water Would __________ Blood Viscosity and Subsequently __________ Peripheral Resistance.

decrease; decrease

Which of the Following Would Cause a Decrease in Cardiac Output?

An increase in parasympathetic stimulation

Which of the Events Below Would NOT Increase the Pressure of Blood Against the Blood-Vessel Walls?

A decrease in blood viscosity