The physical mechanism responsible for blushing is
A) cyanosis.
B) an increased amount of melanin.
C) dilation of superficial blood vessels.
D) decreased amounts of carotene.
E) None of the answers are correct.
C) dilation of superficial blood vessels.
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Valves are important for promoting one-way flow of blood through the heart and some large veins.
Answer the following statement true (T) or false (F)
What is the primary role of salt as a constituent of sweat in evaporative cooling systems?
A) Boiling point elevation B) Water balance C) Blood pressure regulation D) Electrolyte adjustment
When a female is standing in anatomical position, which of the following structures of the uterus is the most inferior?
A. The fornix B. The external os C. The cervical canal D. The fundus E. The body
Which disorder is characterized by a low platelet count?
A. Thrombocytopenia B. Hemophilia C. Polycythemia D. Anemia