BIO 669 Exam 2 Questions and Answers A+ Graded (2025).

BIO 669 Exam 2 Questions and
Answers A+ Graded (2025)




Thromboangiitis .obliterans .(Buergers .disease) .is .an .autoimmune .condition .that
.is:


a. .A .result .of .over .activation .of .the .intrinsic .and .extrinsic .clotting .system
.systemically


b. .Characterized .by .attacks .of .vasospasm .in .the .small .arteries .and .arterioles .of
.the .fingers .and .toes


c. .Strongly .associated .with .smoking

d. .Associated .with .janeway .lesions .and .Oslers .Nodes .- .CORRECT .ANSWER-c.
.Strongly .associated .with .smoking


Which .of .the .following .is .not .a .systemic .disease .that .is .associated .with
.Raynaud's .Phenomenon?


a. .Congestive .heart .failure

b. .Collagen .vascular .diseases .such .as .scleroderma

c. .Pulmonary .hypertension

d. .Myxedema .or .smoking .- .CORRECT .ANSWER-a. .Congestive .Heart .Failure

Which .of .the .following .is .NOT .a .primary .factor .in .determining .preload?

a. .Venous .return .during .diastole

b. .End .systolic .volume

c. .Total .peripheral .(systemic) .resistance

d. .All .of .the .above .are .primary .factors .of .preload .- .CORRECT .ANSWER-c. .Total
.peripheral .(systemic) .resistance

,Which .of .the .following .statements .are .INCORRECT

a. .The .mean .arterial .pressure .is .the .average .force .of .pushing .blood .through .the
.systemic .circuit.


b. .The .pulse .pressure .is .the .difference .between .systolic .and .diastolic
.pressures


c. .A .decrease .in .aortic .compliance .increases .its .stiffness .and .thus .can .lead .to
.an .increase .in .pulse .pressures


d. .Prostacyclins, .which .are .diminished .by .NSAIDs, .are .vasoconstrictors. .-
.CORRECT .ANSWER-d. .Prostacyclins, .which .are .diminished .by .NSAIDS, .are
.vasoconstrictors


Which .of .the .following .is .incorrect .regarding .the .isometric .contraction .phase .of
.the .cardiac .cycle?


a. .Blood .does .not .flow .through .the .heart .at .this .time.

b. .The .atria .are .contracting

c. .The .valves .are .closed

d. .It .occurs .during .ventricular .systole .- .CORRECT .ANSWER-b. .The .atria .are
.contracting


The .resistance .of .movement .of .blood .from .the .left .ventricle .to .the .aorta .is
.termed .the:


a. .Ejection .fraction

b. .Compliance

c. .Preload

d. .Afterload .- .CORRECT .ANSWER-d. .Afterload

Natriuretic .peptides .act .by:

a. .Stimulates .secretion .of .Na+ .(and .thus .decreases .urine .volume) .from .the
.kidneys


b. .Stimulated .the .release .of .Na+ .(thus .increases .urine .volume) .from .the .kidneys

c. .Increases .vascular .smooth .muscle .contraction .(vasoconstriction)

, d. .Stimulates .increased .heart .rate, .contractility, .and .cardiac .output .- .CORRECT
.ANSWER-b. .Stimulate .the .release .of .Na+ .(thus .increasing .urine .volume) .from
.the .kidneys


The .double .layered .serous .membrane .surrounding .the .heart .that .functions .to
.minimize .friction .from .the .heart .movement .is .the:


A. .Myocardium

B. .Endocardium

C. .Peritoneum

D. .Pericardium .- .CORRECT .ANSWER-D. .Pericardium

Prinzmetal .angina .is:

a. .A .transient .ischemia .of .the .myocardium .that .occurs .unpredictably

b. .Myocardial .ischemia .that .may .not .cause .detectable .symptoms

c. .Ischemia .that .occurs .after .a .predictable .amount .of .exercise

d. .The .rupture .of .an .unstable .plaque .- .CORRECT .ANSWER-a. .A .transient
.ischemia .of .the .myocardium .that .occurs .unpredictably


Progressive .venous .distension .of .the .head .and .upper .extremities .resulting .from
.growth .of .a .cancerous .tumor .on .the .right .mainstem .bronchus .is .best
.described .clinically .by:


A. .Deep .vein .thrombosis

B. .Spinal .shock

C. .Superior .vena .cava .syndrome

D. .Carcinoid .syndrome .- .CORRECT .ANSWER-C. .Superior .Vena .Cava .Syndrome

The .most .common .cause .of .aneurysm .is:

A. .External .Hematoma

B. .Atherosclerosis .with .hypertension

C. .Genetics

D. .Congestive .heart .failure .- .CORRECT .ANSWER-B. .Atherosclerosis .with
.hypertension