Local Defense System

Q.

Erythropoiesis starts in

1. Kidney

2. Liver

3. Spleen

4. Red bone marrow

Q.

Letter to Your Friend Who is in Hospital and Suffering from Typhoid

Q.

Our nails are made up of which tissues?

Q.

Name the compound that prevents the clotting of blood inside the blood vessels.

1. Fibrin, Fibrinogen, Thrombin, Prothrombin, Thromboplastin

2. Prothrombin, Thromboplastin, Thrombin, Fibrin, Fibrinogen

3. Thromboplastin, Thrombin, Prothrombin, Fibrin, Fibrinogen

4. Thromboplastin, Prothrombin, Thrombin, Fibrinogen, Fibrin

Q.

What does EPI stand for?

Q.

Blood protiens are incapable of blood clotting inside the blood vessels but form blood clot at the injury. How is it possible?

Q.

Stomach has the lowest pH in the human digestive tract.

1. True
2. False

Q. Write True(T) or false (F) for the following statements:
​ (c) The pigment melanin which imparts colouration to the skin is found in the malpighian layer.​

1. True
2. False

Q. Why do some children fall ill more frequently than others living in the same locality?

Q.

What is the ideal pH of the human gut?

Q.

What Is Hemozoin?

Q.

Skin cell are flat so they form a ___________barrier

Q. Describe the RNAi process? How does it act as method of cellular defense in organisms?

Q.

explain digestive disorders in human digestive system?

Q.

Question 26
Which statement is not true about thyroxin?

(a) Iron is essential for the synthesis of thyroxin
(b) It regulates carbohydrate, protein and fat metabolism in the body
(c) Thyroid gland requires iodine to synthesise thyroxin
(d) Thyroxin is also called thyroid hormone

Q. Identify the functions of bones from the following.

1. Form framework of body
2. Support and protect vital organs
3. Help in locomotion
4. Help in transportation

Q. Gastric secretions are under the control of

1. Cerebrum
2. Hypothalamus
3. Thalamus
4. Medulla oblongata

Q. What is immunization ? Name any four diseases which can be prevented by immunization.

Q. First line of defense include

1. Mucous
2. Skin
3. All of the above
4. Lysosyme secretion

Q. Which one is not a component of third line of body defence?

1. Killer T-cells
2. Natural killer cells
3. Memory cells
4. Plasma cells

Q. Which among the following is also known as pavement epithelium?

1. Simple columnar epithelium
2. Simple squamous epithelium
3. Simple cuboidal epithelium
4. Simple ciliated epithelium

Q. State a method of cellular defence which works in all eukaryotic organisms.

Q. Substances that regulate or coordinate other leukocytes are

1. Interferons
2. Interleukins
3. Enzymes
4. None of the above

Q.

Choose the odd one out from the following sets, giving a reason for your choice.
Basophils, neutrophils, monocytes, eosinophils.

Q.

The category of drugs used to prevent infectious diseases?

Q. How does human skin act as a physical barrier against bacterial attacks?

Q. Which of the following forms the first line of defence of the body against pathogens?

1. Mucus
2. Skin
3. WBCs
4. Tears

Q. ______ is a structure which provides cushioning between bones.

1. Cartilage
2. Muscle
3. Tendon
4. Ligament

Q.

How is the amoeboid shape of WBCs helpful to them?

1. Helps to produce antibodies

2. Helps to fight diseases

3. Helps to carry oxygen

4. Helps to squeeze out through the capillary wall

Q. Identify the functions of bones from the following.

1. Form framework of body
2. Support and protect vital organs
3. Help in locomotion
4. Help in transportation