Question

1. The pulmonary circuit :

1. Sends oxygen poor blood to the heart
2. Sends oxygen poor blood to cells
3. Sends oxygen poor blood to lungs
4. Brings oxygen rich blood from cells

2. When ventricular walls relax:

1. Mitral valve opens & tricuspid valve closes
2. Tricuspid valve opens & mitral valve closes
3. Mitral and tricuspid valves close
4. Mitral and tricuspid valves open

3. Alveoli are:

1. Type of capillaries
2. Made of tiny sacs
3. Tiny cells
4. Large blood vessels

4. Which of following is not part of upper respiratory tract?

1. Nose
2. Sinuses
3. Lungs
4. Pharynx

5. The type of antibody associated with mucus secretion is:

1. IgG
2. IgA
3. IgM
4. IgE

6. Which of following is not a type of T lymphocyte?

Answer 1

1) answer - c. Sends oxygen poor blood to the lungs

Pulmonary circuit :

Right Ventricle ----> Pulmonary vein -----> Pulmonary capillary ----> Pulmonary venule -----> Pulmonary vein ----> Left atrium

The Deoxygenated blood from body is brought by Superior and inferio vena cava into the right atrium, which moves into the right Ventricle and then goes into lungs for oxygenation.

2) answer - d. Tricuspid and mitral valve open

During Ventricular relaxation pressure in thr Ventricle Decreases and hence both mitral and Pulmonary valve open and pours blood into the ventricle.

3) answer - b. Made of tiny sacs

Alveoili are mad up of many many globuar sacs called as lobules

4) answer - c. Lungs

Lungs forms the lower Respiratory sytem, hence the answer here

5) answer - b. IgA

Mucosal secretion contains IgA in it, responsible for the local immunity .