Macrophages and NK Cells

Q.

Mention the symptoms and causes of inflammation

Q.

Define phagocytosis.

Q. ___is the method employed by some WBCs to engulf bacteria and other foreign substance.

Q.

Name the cell which causes phagocytosis.

Q. What is Apoptosis?

Q. The characteristic of Nk cells is that they recognise the pathogen and always attack in troops.

1. True
2. False

Q. ___is the method employed by some WBCs to engulf bacteria and other foreign substance.

Q.

Natural killer cells are able to bind to tumor cells and virus-infected cells and kill them. True or False?

1. True

2. False

Q.

Natural killer cells are able to bind to tumor cells and virus-infected cells and kill them. True or False?

1. True
2. False

Q.

Cells of innate immunity are:

1. macrophages

2. red blood cells

3. neutrophils

4. natural killer cells

Q. The specific cells that are specialised in killing infectious microbes are known as ___.

1. RBCs
2. immune cells
3. skin cells
4. muscle cells

Q. Macrophages are capable of attacking and destroying cancer cells.

1. False
2. True

Q. The characteristic of Nk cells is that they recognise the pathogen and always attack in troops.

1. True
2. False

Q.

Fill up the blanks with appropriate cells and secretions of Areolar tissue:

(i)____ are secretory cells that release Heparin.
(ii)_____ is an anticoagulant, histamine a vasodilator that lowers blood pressure and serotonin a vasoconstrictor that increases BP.
(iii)____ are immune cells that are phagocytic that is they digest invading pathogens or general tissue waste.
(iv)____ produce white and yellow fibers which, are present in high quantity in areolar tissue.

1. (i)-Mast cells, (ii)-Heparin, (iii)- Macrophages, (iv)- Fibroblasts.

2. (i)-Heparin, (ii)-Macrophages, (iii)-Fibroblasts, (iv)- Mast cells.

3. (i)-Macrophages, (ii)-Fibroblasts, (iii)-Mast cells, (iv)-Heparin.

4. (i)-Fibroblasts, (ii)-Heparin, (iii)-Mast cells, (iv)-Macrophages.