BIOL 252: Human Anatomy & Physiology II w/Lab
Module 2 Exam – Blood, Cardiovascular
&Respiratory Systems| PDF
Q1
Covering cuts, scratches, or open wounds with waterproof dressing is not required
when handling blood as long as you wear gloves.
False
Rationale: Open wounds must be covered to prevent bloodborne pathogen
exposure.
Q2
In the capillaries, ______ enters the bloodstream as waste from surrounding
tissues.
Carbon dioxide
Rationale: CO₂ diffuses from tissues into blood for removal.
Q3
Coagulation is the process of turning blood from a gel into a liquid to prevent clot
formation.
False
Rationale: Coagulation forms a gel (clot) to stop bleeding.
Q4
An anticoagulant is any substance that ______ coagulation and blood clotting.
Opposes
Rationale: Prevents thrombus formation by interfering with clotting pathways.
Q5
What is the final step in erythropoiesis that forms mature red blood cells?
,Expulsion of organelles from reticulocytes
Rationale: This creates anucleate, biconcave erythrocytes.
Q6
A pulse oximeter measures percent saturation using red and infrared light.
True
Rationale: It detects hemoglobin oxygenation through light absorption.
Q7
A red blood cell with a high mean corpuscular hemoglobin (MCH) is:
Hyperchromic
Rationale: Contains more hemoglobin than normal.
Q8
If one step of hemostasis fails, what is the likely outcome?
Hemorrhage and excessive bleeding
Rationale: Failure of any phase prevents clot stabilization.
Q9
How does blood maintain homeostasis?
By transporting oxygen, nutrients, hormones, and wastes
Rationale: Circulation distributes and removes essential materials.
Q 10
The unique cardiac property allowing self-initiated electrical potential is:
Autorhythmicity
Rationale: SA node cells generate spontaneous depolarizations.
Q 11
The septum prevents impulses from reaching ventricles without passing the AV
node.
True
, Rationale: Ensures coordinated conduction.
Q 12
Which component initiates blood clot formation?
Platelets
Rationale: Platelets aggregate and release clotting factors.
Q 13
Plasma makes up approximately what percent of blood?
55 %
Rationale: Remaining 45 % are formed elements.
Q 14
Which plasma protein maintains osmotic pressure?
Albumin
Rationale: Prevents fluid loss from capillaries.
Q 15
Which leukocyte increases during allergies?
Eosinophil
Rationale: Responds to allergens and parasites.
Q 16
Universal donor blood type:
O negative
Rationale: Lacks A, B, and Rh antigens.
Q 17
Hormone stimulating RBC production:
Erythropoietin (EPO)
Module 2 Exam – Blood, Cardiovascular
&Respiratory Systems| PDF
Q1
Covering cuts, scratches, or open wounds with waterproof dressing is not required
when handling blood as long as you wear gloves.
False
Rationale: Open wounds must be covered to prevent bloodborne pathogen
exposure.
Q2
In the capillaries, ______ enters the bloodstream as waste from surrounding
tissues.
Carbon dioxide
Rationale: CO₂ diffuses from tissues into blood for removal.
Q3
Coagulation is the process of turning blood from a gel into a liquid to prevent clot
formation.
False
Rationale: Coagulation forms a gel (clot) to stop bleeding.
Q4
An anticoagulant is any substance that ______ coagulation and blood clotting.
Opposes
Rationale: Prevents thrombus formation by interfering with clotting pathways.
Q5
What is the final step in erythropoiesis that forms mature red blood cells?
,Expulsion of organelles from reticulocytes
Rationale: This creates anucleate, biconcave erythrocytes.
Q6
A pulse oximeter measures percent saturation using red and infrared light.
True
Rationale: It detects hemoglobin oxygenation through light absorption.
Q7
A red blood cell with a high mean corpuscular hemoglobin (MCH) is:
Hyperchromic
Rationale: Contains more hemoglobin than normal.
Q8
If one step of hemostasis fails, what is the likely outcome?
Hemorrhage and excessive bleeding
Rationale: Failure of any phase prevents clot stabilization.
Q9
How does blood maintain homeostasis?
By transporting oxygen, nutrients, hormones, and wastes
Rationale: Circulation distributes and removes essential materials.
Q 10
The unique cardiac property allowing self-initiated electrical potential is:
Autorhythmicity
Rationale: SA node cells generate spontaneous depolarizations.
Q 11
The septum prevents impulses from reaching ventricles without passing the AV
node.
True
, Rationale: Ensures coordinated conduction.
Q 12
Which component initiates blood clot formation?
Platelets
Rationale: Platelets aggregate and release clotting factors.
Q 13
Plasma makes up approximately what percent of blood?
55 %
Rationale: Remaining 45 % are formed elements.
Q 14
Which plasma protein maintains osmotic pressure?
Albumin
Rationale: Prevents fluid loss from capillaries.
Q 15
Which leukocyte increases during allergies?
Eosinophil
Rationale: Responds to allergens and parasites.
Q 16
Universal donor blood type:
O negative
Rationale: Lacks A, B, and Rh antigens.
Q 17
Hormone stimulating RBC production:
Erythropoietin (EPO)
