Question

4. In humans
(a) kidney
ts
(d) nephrons
5.
is the chief organ of excretion.
(b) nerves
(c) heart
prevents blood clotting.
(b) Platelet
(C) WBC
(a) RBC
(d) Plasma
Q. II. Fill in the blanks.
1. The blood brought into the heart by the pulmonary veins is rich in
2. The normal blood pressure of a human being is
3.
is the respiratory pigment of RBC.
4. Oxygenated blood is pumped from the heart into the
parts of the body.
5. Blood pressure is measured by an instrument called
6. The human heart beats about
times per minute.
7. Kidneys eliminate the waste materials in liquid form called
which carries it to different​

Answer 1

Answer:

5 kidney is the chief organ of excretion.

*Platelet prevents blood clotting

Q.ll.

1 .oxygen

2. 120/80

5.sphygmomanometer

6. Adult heart beats about 60 to 100 whereas new-born beats faster than adult I.e., about 70 to 100 beats per min

7. Kidney eliminate the waste materials in liquid form called urine. Which carries it to different bloodstream to the kidneys.