std 8th science all important fill ups chapter 11 human body and organ system

 1)fill in the blanks.

A) RBCs of the blood contain haemoglobin , an iron compound .

B) diaphragm is present between thoracic and abdominal cavity.

C) cardiac muscles are involuntory .

D) pH of oxygenated blood is alkaline

E) production of RBCs occurs in red bone marrow.

2)Find out my partner.

Group 'A' Group 'B'

1. Heart beats a. 350 ml

2. RBC b. 7.4

3. WBC c. 37 0C

4. Blood donation d. 72

5. Normal body e. 50 - 60 Temperature lakh/mm3

6. pH of oxygenated f. 5000-6000 per blood mm3

Answer:

Heartbeats                        →          d. 72

RBC                                   →         e. 50-60 lakh/mm3

 WBC                                → f. 5000-6000 per mm3

 Blood donation                   →          a. 350 ml

Normal body temperature  →          c. 37 °C

 pH of oxygenated blood    →           b. 7.4

Draw neat and labeled diagrams.

a. Respiratory system

b. Internal structure of heart.