Q41 of 57 Page 45

Differentiate between voluntary and involuntary muscles. Give one example of each type.











VOLUNTARY MUSCLES



INVOLUNTARY MUSCLES



● Voluntary muscles can be regulated by our will.


● The functions that these muscles perform are regulated by our own conscious control.


● Eg- Movement of arms are under our control



Involuntary muscles cannot be controlled by our will.


The functions of these muscles are controlled by the hypothalamus.


Eg- Cardiac muscles found in heart work tirelessly and regulate the beating of heart.




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39

Draw and identify different elements of phloem.

 40

Write true (T) or false (F)

(a) Epithelial tissue is protective tissue in animal body.


(b) The lining of blood vessels, lung alveoli and kidney tubules are all made up of epithelial tissue.


(c) Epithelial cells have a lot of intercellular spaces.


(d) Epithelial layer is permeable layer.


(e) Epithelial layer does not allow regulation of materials between body and external environment.

 42

Differentiate the following activities on the basis of voluntary (V) or involuntary (I V) muscles.

(a) Jumping of frog


(b) Pumping of the heart


(c) Writing with hand


(d) Movement of chocolate in your intestine

 43

Fill in the blanks

(a) Lining of blood vessels is made up of ________


(b) Lining of small intestine is made up of ________


(c) Lining of kidney tubules is made up of ________


(d) Epithelial cells with cilia are found in ________ of our body.