Class7_Science_Respiration in Organisms_Respiration
The cells in our body perform functions like growth, excretion, reproduction, etc. A cell needs
The cells of living organisms require a constant supply of oxygen to release energy. This is done
by a process called breathing. Breathing involves two steps - one inhalation and one exhalation.
The breath rate of human beings is 15 -- 18 breaths a minute.
Air passes through the tiny hair in the nasal cavity, and then through the pharynx, larynx and windpipe before reaching the lungs. The hairs in the nasal cavity prevent the entry of dust particles and pollen. The mucous lining is present from the nasal cavity to the lungs.
The cells of living organisms require a constant supply of oxygen to release energy. This is done
by a process called breathing. Breathing involves two steps - one inhalation and one exhalation.
The breath rate of human beings is 15 -- 18 breaths a minute.
Air passes through the tiny hair in the nasal cavity, and then through the pharynx, larynx and windpipe before reaching the lungs. The hairs in the nasal cavity prevent the entry of dust particles and pollen. The mucous lining is present from the nasal cavity to the lungs.
Today's Devotional
A Prayer When a Situation Seems Impossible - Your Daily Prayer - April 24
My wife has recently painted these words on a wall in our house as a reminder to us both: “Mightier than the waves of the sea, is His love for us!” (Inspired by Psalm 93:4). Please remember this. Mightier than the tempest you are facing is His love for you!
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