BIO 322 Exam 1 Study Guide 2025: Practice Questions & Key Concepts

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EXAM 1: BIO322 / BIO 322 (LATEST 2025 UPDATE)

APPLIED PATHOPHYSIOLOGY EXAM | QUESTIONS

AND VERIFIED ANSWERS | 100% CORRECT | GRADE

A - GCU

What is true about atrial, aortic, and ventricular pressures?

A. Aortic pressure is always greater then ventricular pressure

which is always greater then atrial pressure.

B. Atrial pressure is always greater then ventricular pressure

which is always greater then aortic pressure.

C. Ventricular pressure is greater than aortic pressure when the

aortic semilunar valve is open.

D. Aortic pressure is greater than ventricular pressure when the

aortic semilunar valve is open. .....ANSWER.....C. Ventricular

pressure is greater than aortic pressure when the aortic semilunar

valve is open.

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What is end systolic volume?

A. It is usually around 50 ml and is decreased by increased

contractility.

B. It is usually around 50 ml and is increased by increased

contractility.

C. It increases to around usually around 130 ml when

sympathetic activity is high.

D. Is very low when a person is at rest, or lying down.

.....ANSWER.....A. It is usually around 50 ml and is decreased by

increased contractility.

Calculate the osmotic concentration of a solution containing 100

mM NaCl and 50 mM glucose.

A. 250 mOsm/L

B. 300 Osm/L

C. 200 Osm/L

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D. 400 mOsm/L

.....ANSWER.....A. 250 mOsm/L

The plateau phase of the cardiac muscle action potential is shown

by the letter ___ and results from

A. C, increased membrane permeability to potassium ions (K

channels open)

B. B, increased membrane permeability to calcium ions (Ca

channels open).

C. C, increased membrane permeability to chloride ions (Cl

channels open).

D. A, an increased membrane permeability to sodium ions (Na

channels open). .....ANSWER.....B. B, increased membrane

permeability to calcium ions (Ca channels open).

Contractility is

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A. The amount of blood pumped for a certain end systolic

volume.

B. Somewhere in between afterload and preload.

C. The amount of force produced during contraction for a given

end diastolic volume, or stretch of cardiac myocytes.

D. The pulse pressure produced during contraction for a given

end diastolic volume, or stretch of cardiac myocytes.

.....ANSWER.....C. The amount of force produced during

contraction for a given end diastolic volume, or stretch of cardiac

myocytes.

The left atrium collects blood from the __________ and empties

into the left ventricle.

A. portal circuit

B. systemic circuit

C. pulmonary circuit