Macula densa cells signal granular cells to release renin through paracrine stimulation
Indicate whether this statement is true or false.
TRUE
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The iron of the heme unit of hemoglobin is transported in the blood by the protein _________________ after the aged erythrocytes are phagocytized
Fill in the blank with correct word.
Where are the chemoreceptors located that are sensitive to low oxygen or high acid levels in the blood?
a. medulla in the brain stem b. right atrium c. carotid and aortic arteries d. apex of the heart e. vena cava
The most superior portion of the brain is the __________.
A. brain stem B. cerebral hemispheres
A 40-year-old man of average height who weighs 210 pounds complains of pain behind the sternum which he describes as "heartburn." The pain is especially acute after eating spicy foods. What is a likely cause of his symptoms?
A. Cirrhosis B. Diverticulitis C. Constipation D. Gastroesophageal reflux disease E. Crohn disease