Biology : Human Organ Systems III

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: Fill in the blanks | Match the Columns

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1.
There are total _______ premolars in an adult human being.

Hint

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2.
Blood is returned to the heart from various body parts through blood vessels known as _______.

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3.
Kidneys are the main _______ organs.

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4.
_______ is the organ of smell.

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5.
_______ are the organs of hearing.

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6.
An average human adult has _______ teeth.

First letter clue

7.
Food descends from the mouth to the stomach through a muscular tube known as _______.

First letter clue

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