Earlham High School Anatomy Class Cardiovascular System

The main organ of the cardiovascular system is the: #1 The main organ of the cardiovascular system is the: A: Lungs B: Heart C: Liver D: Your mom!

B: Heart

Which of the following structures consists of self-exciting tissue? #2 Which of the following structures consists of self-exciting tissue? A: chordae tendineae B: papillary muscles C: sinoatrial node D: atrial syncytium

C: sinoatrial node

Platelets are best defined as #3 Platelets are best defined as A: Giant, multinucleated cells B: Cytoplasmic fragments of cells C: Immature leukocytes D: Lymphoid cells

B: cytoplasmic fragments of cells

The tissue that forms a loose-fitting sac #4 The tissue that forms a loose-fitting sac Around the heart is the A: pericardium B: epicardium C: endocardium D: exocardium

A: pericardium

Nonprotein nitrogenous substances include #5 Nonprotein nitrogenous substances include A: Amino acids B: Urea C: Uric acid D: All of the above

D: All of the above

Of the following, the one that is not a type #6 Of the following, the one that is not a type of plasma protein: A: Heparins B: Fibrinogens C: Albumins D: Globulins

A: Heparins

Of the following, the one that is not a factor #7 Of the following, the one that is not a factor that influences blood pressure: A: Blood volume B: Viscosity C: Digestive rate D: Stroke volume

C: Digestive rate

A normal white blood cell count (WBCC) is between #8 A normal white blood cell count (WBCC) is between A: 500-1000/mm3 of blood B: 5000-10,000/mm3 of blood C: 50,000-100,000/mm3 of blood D: 15,000-25,000/mm3 of blood

B: 5000-10,000/mm3 of blood

The basic event in the formation of a blood clot #9 The basic event in the formation of a blood clot is the change of A: Fibrinogen to fibrin B: Fibrin to fibrinogen C: Thrombin to prothrombin D: Vitamin K to prothrombin

A: Fibrinogen to fibrin

The most important action of plasma albumin is #10 The most important action of plasma albumin is A: Acting as antibodies of immunity B: Helping to control bleeding C: Serving as energy sources D: Helping to maintain blood osmotic pressure

D: Helping to maintain blood osmotic pressure

When the ventricular walls contract, the #11 When the ventricular walls contract, the Bicuspid valve opens and the tricuspid valve closes Tricuspid valve opens and the bicuspid valve closes A: B: C: Bicuspid and tricuspid valves close D: Bicuspid and tricuspid valves open

C: Bicuspid and tricuspid valves close

The most active phagocytic cells among the #12 The most active phagocytic cells among the leukocytes are A: Basophils and eosinophils B: Neutrophils and monocytes C: Lymphocytes and neutrophils D: Monocytes and lymphocytes

B: Neutrophils and monocytes

The density of capillaries within a tissue varies #13 The density of capillaries within a tissue varies directly with the tissue’s A: Thickness B: Fluid content C: Type of matrix D: Rate of metabolism

D: Rate of metabolism

In an ECG pattern, the T wave is caused by #14 In an ECG pattern, the T wave is caused by Polarization of ventricular muscle fibers A: Polarization of atrial muscle fibers B: Depolarization of ventricular muscle fibers C: Depolarization of atrial muscle fibers D:

B: Polarization of ventricular muscle fibers

In an ECG pattern, the P wave is caused by #15 In an ECG pattern, the P wave is caused by Polarization of ventricular muscle fibers A: Polarization of atrial muscle fibers B: Depolarization of ventricular muscle fibers C: Depolarization of atrial muscle fibers D:

C: Depolarization of atrial muscle fibers

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