____________________ are long-range chemical mediators secreted by endocrine glands into the blood, which carries them to distant target organs
Fill in the blank(s) with correct word
hormones
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As the bolus of food enters the oropharynx during swallowing, all of the following actions occur except:
A) the infrahyoid muscles act to depress the larynx. B) the oropharynx is closed off from the nasopharynx. C) the oropharynx is shortened. D) the soft palate is elevated. E) the constrictor muscles contract.
Which of the following statements is not true?
A. Albumin is a relatively rare plasma protein. B. Albumin contributes to blood viscosity. C. Albumin contributes to osmolarity. D. Albumin is produced in the liver. E. Albumin affects blood volume and pressure.
The lungs develop from
A. an evagination from the floor of the diencephalon. B. an invagination from the hindgut. C. an evagination from the foregut. D. somitomeres. E. neural crest cells.
One of the major problems a premature infant may develop is respiratory distress syndrome. This occurs because in a premature infant
A. oxygen transport is impaired. B. surfactant isn't produced. C. the lungs are collapsed. D. there aren't enough red blood cells to carry oxygen. E. there is mixing of the arterial and venous blood.