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  1. Problems
  2. /Human Body
  3. /Respiratory System

Respiratory System

Biology
+ Upload a Problem
More in Human BodyDigestive SystemRespiratory SystemCirculatory SystemNervous System and Sense OrgansExcretory SystemHormones and the Endocrine SystemHuman Reproduction
4 problems
Type:
1.
An oxygen molecule would take about three years to diffuse from your lungs to your toes. New
High School (9–10), General · Respiration, Respiratory SystemStemPy LabStemPy Lab
Medium
2.
Take a simple model: the two lungs hold 300 million alveoli, and each one is a tiny ball 0.25 mm… New
High School (9–10), General · Respiration, Respiratory SystemStemPy LabStemPy Lab
Hard
3.
At rest, Dev takes 16 breaths a minute, with 0.5 L of air in each. New
High School (9–10), General · Respiration, Respiratory SystemStemPy LabStemPy Lab
Medium
4.
Put these in the order in which air passes them: bronchi, nostrils, alveoli, trachea, pharynx… New
High School (9–10), General · Respiration, Respiratory SystemStemPy LabStemPy Lab
Easy