Aldosterone release can be triggered by the presence of the blood-borne messenger angiotensin II or by low levels of sodium, and so its secretion regulation is said to be
A. purely neural.
B. both hormonal and humoral.
C. both antagonistic and synergistic.
D. both neural and synergistic.
E. purely hormonal.
B
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Indicate whether the statement is true or false.
Which muscle appears as fan-shaped wedges on the side of the chest?
A) subclavius B) levator scapulae C) pectoralis minor D) serratus anterior
Which events occur during the recycling of aged or damaged erythrocytes? (Order is not important.)a: The heme group is converted into biliverdin.b: Bilirubin is placed in long-term storage in the liver.c: The iron ions in hemoglobin are removed.d: The iron ions are stored in the liver.e: The iron ions are stored in the red bone marrow.f: Membrane proteins and globin proteins are broken down and reused.g: The erythrocyte contents, excluding the globins, are excreted unchanged via the digestive tract.
A. a, b, c, g B. a, b, c, e, f C. a, c, d, f D. c, e, g E. c, d, g