Question

1. Select the most correct answer:

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

2. The three steps of the 1^st stage of wound healing 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

3. 98.5% of our O₂ (oxygen) is transported in the bloodstream:

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 be eeezy.

4. Vascular spasm (vasospasm):

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

2. Constricts the fibrin threads, closing the wound

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

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

5. Dissolves the fibrin threads, closing the wound

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

a. Contain the pigmented protein hemoglobin

b. Are biconcave meaning that they have 2 nuclei

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

d. All of the above are true concerning RBC’s

e. Only A & C are correct

Answer 1

Q.1Ans:e)A,B,Call are correct

all the three option are correct.

B)pathogen is disease causing agent. eg.E.coli

C)antigen is anything foreign or perceived foreign. eg. microorganisms.

A) phagocytosis is the process of engulfing and digestion. eg.WBC engulfing an invading bacterium

Q2Ans: C)Vascular spasm, platelet plug formation, coagulation

wound healing include

1) hemostasis phase

2)Inflammatory phase

3) proliferative phase

4) maturation phase

hemostasis isfirst stage of wound healing which include

a) vascular spasm

b) platelet plug formation

c) clotting

Q.3Ans:B)Bound to hemoglobin (Hb) as Hb-O₂

A)dissolved in the plasma=1.5%

B) Bound to hemoglobin (Hb) as Hb-O₂ =98.5%

C) As HCO₃ (bicarbonate ion) - it carries CO₂ 60%

D) Bound to Carbon Dioxide (CO₂)-0

E)Ooops, I didn’t study. I thought summer school was going to be eeezy -it's personal opinion but wrong answer

Q4Ans:D)A & C are true concerning vascular spasm (vasospasm)

B)Constricts the fibrin threads, closing the wound: coagulation

E)Dissolves the fibrin threads, closing the wound: last process of wound healing

Vascular spasm (vasospasm):

A)Is a response to blood vessel damage, activated platelets, and reflexes initiated by pain receptors  

C)Is the 1^st step in hemostasis in which the injured vessel vaso-constricts (vaso-C)

Q.5Ans E)Only A & C are correct

RBC is are

Contain the pigmented protein hemoglobin

Transport oxygen, and are the most abundant of all the blood cells

Are biconcave and absence of nucleus.

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