1. Select the most correct answer:

1. Phagocytosis is the process of engulfing & digestingmicroorganisms
2. An Antigen is anything foreign (non-self), or perceived asforeign
3. A Pathogen is a disease-causing antigen
4. A and C are correct
5. A and B and C are correct

1. The three steps of the 1^st stage of woundhealing are:

1. Hemostasis, clot retraction, fibrinolysis
2. Hemostasis, platelet plug formation, coagulation
3. Vascular spasm, platelet plug formation, coagulation
4. Vascular spasm, clot retraction, fibrinolysis
5. Hemostasis, vascular spasm, coagulation

1. 98.5% of our O₂ (oxygen) is transported in thebloodstream:

1. As dissolved in the plasma
2. Bound to hemoglobin (Hb) as Hb-O₂
3. As HCO₃ (bicarbonate ion)
4. Bound to Carbon Dioxide (CO₂)
5. Ooops, I didn’t study. I thought summer school was going to beeeezy.

1. Vascular spasm (vasospasm):

1. Is a response to blood vessel damage, activated platelets, andreflexes initiated by pain receptors

1. Constricts the fibrin threads, closing the wound

1. Is the 1^st step in hemostasis in which the injuredvessel vaso-constricts (vaso-C)

1. A & C are true concerning vascular spasm (vasospasm)

1. Dissolves the fibrin threads, closing the wound

1. Red blood cells /RBC’s /erythrocytes:

a. Contain the pigmented proteinhemoglobin

b. Are biconcave meaning that theyhave 2 nuclei

c. Transport oxygen, and are the mostabundant of all the blood cells

d. All of the above are trueconcerning RBC’s

e. Only A & C are correct