HSC Science (General) इयत्ता १२ वी - Maharashtra State Board Important Questions

While playing cricket Raju faces problems of severe pain and heaviness in the chest. Pain spreads from the neck, lower jaw, left arm and left shoulder. From the above symptoms identify the disease:

With the help of neat and labelled diagrams artery and vein.

What is erythropoiesis?

Give the name of the instrument which is used to measure the blood pressure.

Draw the neat Labelled diagram of the internal structure of the human heart.

What is phosphorylation?

What is Cardiac output?

In Hamburger’s phenomenon, ______.

Draw a neat diagram of the conducting system of human heart and label AV node, Bundle of His and Purkinje fibres.

Describe the steps in breathing.

Differentiate between an artery and a vein with reference to lumen and thickness of wall.

Give reason:

Lymphatic vessels are milky in appearance.

Give reason:

The wall of left ventricle is thicker than right ventricle

Give reason:

Valves are present in the veins.

Give reason:

Pulmonary veins carry oxygenated blood.

Which of the following divides nasal cavity?

Select and rewrite the appropriate disorder of the respiratory system with the given symptom.

Breakdown of alveoli, shortness of breath.

Select and rewrite the appropriate disorder of the respiratory system with the given symptom.

Inflammation of the sinuses, mucous discharge.

Select and rewrite the appropriate disorder of the respiratory system with the given symptom.

Inflammation of larynx, vocal cord, sore throat, hoarseness of voice, mucous build up and cough.

Select and rewrite appropriate disorder of respiratory system with the given symptom.

Inflammation of fibrosis, lung damage.