Question

9. 'Heart of heart is called

b) AV node
a) SA node
c) Purkinje fibres
d) Bundle of His

10. Which one of the following shows correct
composition of blood

a) Plasma - Blood + Lymphocyte
b) Serum - Blood + Fibrinogen
c) Lymph - Plasma + RBC + WBC
d) Blood - Plasma + RBC+ WBC +Platelets

class 10th​

Answer 1

Answer:

2.Lymph has a similar composition to blood plasma and when initially formed, lymph is relatively colourless. Depending on where the lymph travels, the lymph will contain different concentrations of lymphocytes, proteins and fats. Lymph contains a variety of substances, including proteins, salts, glucose, fats, water, and white blood cells. Unlike your blood, lymph does not normally contain any red blood cells.

Blood plasma is composed of sodium, potassium, chloride and calcium.

In blood, the serum is the component that is neither a blood cell (serum does not contain white or red blood cells) nor a clotting factor; it is the blood plasma with the fibrinogens removed.

Answer 2

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9. AV node

10. Plasma - Blood + Lymphocyte

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