What is the role of the azygous and its tributaries in returning blood to the vena cava?
What will be an ideal response?
The azygous is the smallest tributary of the superior vena cava. The other two vessels that are tributaries of the superior vena cava are the brachiocephalic veins. The azygous drains blood and ascends from the lumbar region over the right side of the vertebral column to enter the thoracic cavity through the diaphragm. On the left side, the azygous vein receives blood from the hemiazygos vein. Together, these veins receive blood from the intercostal veins, the esophageal veins, and other veins from the mediastinal structures.
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The branches that arise from the celiac trunk are the
A. left gastric and splenic arteries. B. left gastric, left gastroepiploic, and splenic arteries. C. left gastroepiploic and splenic arteries. D. left gastric, splenic, and common hepatic arteries. E. left gastric and common hepatic arteries.
The suffix for treatment with chemical substances or drugs is:
A) -scopy B) -therapy C) -graph D) -graphy
The major regulatory center of the autonomic nervous system is believed to be the ________ since this brain region has functions that require appropriate activation of sympathetic and parasympathetic nerve fibers.
A. midbrain B. cerebrum C. hypothalamus D. thalamus
Which statement about erythrocytes is true?
A. Erythrocytes are biconcave in shape. B. Erythrocytes are round, multinucleated cells. C. Erythrocytes function to transport oxygen and carbon monoxide. D. Erythrocytes function to fight off infection.