respiratory system
circulatory system
daily dubbles
100

A pair of spongy air filled organs

what are lungs

100

The size of your fist 

What is the heart

100

what tipes of blood cells are white

what are white blood cells

200

What receives and expels air for respiration alongside the mouth?

 What are nostrils or nares.

200

what need to in tain the life of the body's tissues

what blood vessels

200

what has blood teraveling through the body

 what are the veins

300

chemical element with the symbol o

what is oxygen

300

what travels through the body

what is blood

300

what breahts in air and breaths out air?

what is a mouth

400

a windpipe which let you berth

what is trachea

400

something that has blood in side 

what are veins

500

what system consisting of specific organs

what is the respiratory system

500

what are  the muscular tubes

what are arteries

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