What can be felt when we touch the back of our wrist?
muscles
Pulse
Bones
Heart
Which air do we breathe in ?
Oxygen
Hydrogen
Nitrogen
Carbon dioxide
What is the journey of blood around the human body known as ?
Blood circulation
Respiration
Germination
Inhalation
What is the process of breathing out air known as ?
Exhalation
Circulation
Which system in our body helps us to carry out the process of respiration ?
Circulatory system
Respiratory system
Reproductive system
Muscular system
How are our lungs connected to the nose ?
Through Wind pipe
Through Lungs
Through Heart
Through Nerves
Which organ in our body keeps beating all the time ?
Lungs
Stomach
Nerves
.Which is the gas that is exhaled from human body?
Which of the following helps us to breathe?
Rib cage
Air sacs
Which of the following are found in millions inside our lungs?
Vessels
Pulses
