You Are Hiking with a Friend and Reach the Peak

question 44

Essay

You are hiking with a friend and reach the peak of a mountain after a long climb.On your climb upward,you had a clear trail with a little grass and small shrubs along the way.But looking down the other side,you see lush vegetation and many broadleaf trees farther down the slope.Your friend wonders why there is such a big difference.What explanation can you offer your friend?

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Definitions:

Medulla

An inner region or core in various organs or cells, often referring specifically to the innermost part of the kidney or the lower part of the brain stem.

Respiratory Centers

Centers in the medulla and pons that regulate breathing.

Chemoreceptors

Sensory receptors that respond to chemical stimuli, such as those found in the nose and taste buds.

Ventral Medulla

A key section of the brainstem involved in regulating autonomic functions, such as heart rate and breathing.