Test Bank for Journey Across the Life Span
7th Edition Polan & Taylor Chapters 1-14 A+
Grades
erthropoietin - answer- Kidney hormone that promotes red blood cell formation
The primary source of erythropoietin is provided by the
a. bone marrow.
b. kidney.
c. lung.
d. liver. - answer- ANS: B
Erythropoietin is a hormone that is secreted into the bloodstream by the kidney. Bone
marrow is not responsible for the production of erythropoietin. Hypoxia from low
hemoglobin levels causes a decrease in tissue oxygen tension in the kidney, thereby
releasing the hormone erythropoietin. The liver is not associated with erythropoietin
production.
Reticulocyte - answer- immature red blood cell
, Which condition is associated with an elevated reticulocyte count?
a. Renal disease
b. Aplastic anemia
c. Hypertension
d. Hemolytic anemia - answer- ANS: D
Hemolytic anemia is associated with an increased number of circulating reticulocytes or
reticulocytosis. Anemia of chronic renal failure is not associated with reticulocytosis.
Rather, it occurs from failure of the renal endocrine function. Aplastic anemia is a stem
cell
disorder that is characterized by pancytopenia, a decrease in red cells, white cells, and
platelets. Hypertension is not related to reticulocytosis.
aplastic anemia - answer- failure of blood cell production in the bone marrow
hemolytic anemia - answer- characterized by an inadequate number of circulating red
blood cells due to the premature destruction of red blood cells by the spleen
The strength of the bond between oxygen and hemoglobin is known as the
, a. Bohr effect.
b. oxygen-hemoglobin affinity.
c. dissociation curve.
d. hemoglobin synthesis. - answer- ANS: B
The strength of the bond between oxygen and hemoglobin is called the oxygen-
hemoglobin
affinity. Hemoglobin saturation is higher when oxygen infinity is increased, and
saturation
is lower when affinity is decreased. The Bohr effect occurs when the oxyhemoglobin
dissociation curve experiences a shift resulting from changes in PCO2 and H+
concentration.
The dissociation curve describes the relationship between the partial pressure of oxygen
and
hemoglobin saturation. Hemoglobin synthesis occurs in the immature red cell.
An increase in hemoglobin affinity for oxygen occurs with
a. hyperthermia.
b. shift to the right.
c. elevated PCO2.
7th Edition Polan & Taylor Chapters 1-14 A+
Grades
erthropoietin - answer- Kidney hormone that promotes red blood cell formation
The primary source of erythropoietin is provided by the
a. bone marrow.
b. kidney.
c. lung.
d. liver. - answer- ANS: B
Erythropoietin is a hormone that is secreted into the bloodstream by the kidney. Bone
marrow is not responsible for the production of erythropoietin. Hypoxia from low
hemoglobin levels causes a decrease in tissue oxygen tension in the kidney, thereby
releasing the hormone erythropoietin. The liver is not associated with erythropoietin
production.
Reticulocyte - answer- immature red blood cell
, Which condition is associated with an elevated reticulocyte count?
a. Renal disease
b. Aplastic anemia
c. Hypertension
d. Hemolytic anemia - answer- ANS: D
Hemolytic anemia is associated with an increased number of circulating reticulocytes or
reticulocytosis. Anemia of chronic renal failure is not associated with reticulocytosis.
Rather, it occurs from failure of the renal endocrine function. Aplastic anemia is a stem
cell
disorder that is characterized by pancytopenia, a decrease in red cells, white cells, and
platelets. Hypertension is not related to reticulocytosis.
aplastic anemia - answer- failure of blood cell production in the bone marrow
hemolytic anemia - answer- characterized by an inadequate number of circulating red
blood cells due to the premature destruction of red blood cells by the spleen
The strength of the bond between oxygen and hemoglobin is known as the
, a. Bohr effect.
b. oxygen-hemoglobin affinity.
c. dissociation curve.
d. hemoglobin synthesis. - answer- ANS: B
The strength of the bond between oxygen and hemoglobin is called the oxygen-
hemoglobin
affinity. Hemoglobin saturation is higher when oxygen infinity is increased, and
saturation
is lower when affinity is decreased. The Bohr effect occurs when the oxyhemoglobin
dissociation curve experiences a shift resulting from changes in PCO2 and H+
concentration.
The dissociation curve describes the relationship between the partial pressure of oxygen
and
hemoglobin saturation. Hemoglobin synthesis occurs in the immature red cell.
An increase in hemoglobin affinity for oxygen occurs with
a. hyperthermia.
b. shift to the right.
c. elevated PCO2.
