1. What forces lymph from capillaries towards the heart,
and what structures prevent backwards flow of lymph? Skeletal muscle
contractions and intestinal movements move lymph, and one-way valves in the
vessels prevent backwards flow
2. The arytenoids are what type of connective tissue? Hyaline cartilage
3. How do humans produce vocalizations? (1 sentence is
sufficient) By vibrating the
vocal folds/true vocal cords as air passes between them
4. Explain one benefit of having C-shaped, rather than
circular, tracheal cartilage. C-shaped cartilage
allows the trachea to contract to help expel air during coughing, or it allows
the esophagus to expand anteriorly when food passes through it.
5. A “pneumothorax” is a condition in which air gets into
the pleural cavity, causing the lung to collapse. Why doesn’t a pneumothorax on
the left side cause collapse of the right lung? Each lung has its
own pleura
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