L2

Question 1

A microbe’s penetration of first line encourage production of

Answer 1

1-phagocytes
2-inflammation
3-fever
4-antimicrobial substances

Question 2

The most infections lead to

Answer 2

Leukocytes but in some infection lead to leukopenia

Question 3

The most of second line defence is

Answer 3

The lymphatic system

Question 4

Spleen

Answer 4

1-Phagocytise pathogens and old RBCs : bilirubin is formed and sent to the liver for excretion in bile
2- store platelets and destroys damage platelets

Question 5

Lymph nodules (small unencapsulated)

Answer 5

1- respiratory,digestive,urinary,reproductive tract, tonsils , payer’s patches

Question 6

Lymph nods (encapsulated)

Answer 6

Produce antibodies to foreign antigens

Question 7

Function Thymus

Answer 7

Produces thymi hormones that make (T cell ) immunologically competent

Question 8

Lymph similar to plasma but

Answer 8

1-more WBCs
2-less protein

Question 9

Lymph is kept moving by

Answer 9

1- contraction lymphatic vessels
2- skeletal muscle pump
3- respiratory pump

Question 10

Phagocytise are …………..

Answer 10

1-macrophages
2-neutrophils

Question 11

The mechanism of phagocytosis is

Answer 11

1-adhere by ….. opsonise
2-engulfment
3- be in vesicle called (phagosome)
4- phagosome adhesion with lysosome to make (phagolysosome)