WGU D027 QUESTIONS AND ANSWERS
WITH VERIFIED SOLUTIONS 100%
CORRECT (GRADED+) NEWLY
UPDATED 2025/2026
What does aldosterone regulate?
✔✔ Reabsorption of sodium and water (indirectly the excretion of potassium)
📝 Aldosterone increases sodium and water retention in the kidneys while
promoting potassium excretion, thereby helping to regulate blood pressure and
fluid balance.
What causes the edema that occurs during the inflammatory process?
✔✔ Increased vascular permeability
📝 Vasodilation increases pressure in the blood vessels, allowing plasma to leak
into surrounding tissues, causing swelling (edema).
Klinefelter Syndrome
✔✔ A chromosomal disorder in which males have an extra X chromosome
(XXY instead of XY).
Symptoms include:
High-pitched voice
Mental impairment
Sparse body hair
Small testes
Gynecomastia
Alpha Thalassemia
✔✔ A genetic blood disorder caused by deletions in alpha-globin genes,
,leading to reduced hemoglobin production.
📝 Each parent can carry a defective gene, giving future offspring a 25% chance of
inheriting the disease.
Blood Flow of the Heart
✔✔
Oxygen-poor blood enters the right atrium from the vena cava
Flows into the right ventricle
Pumped into the pulmonary artery → lungs
Oxygen-rich blood returns via pulmonary veins to the left atrium
Flows into the left ventricle
Pumped out through the aorta to the body
What happens during diastole?
✔✔ The heart is relaxed, semilunar valves are closed, and blood flows from
atria to ventricles under low pressure.
What happens during systole?
✔✔ Heart muscles contract; pressure forces pulmonary and aortic valves
open.
Right ventricle → blood to lungs
Left ventricle → blood to body via aorta
QRS Complex
✔✔ Represents ventricular depolarization and atrial repolarization
What effect does atherosclerosis have on the development of an aneurysm?
✔✔ It erodes the vessel wall.
,📝 Plaque buildup makes vessels less flexible and more prone to rupture,
contributing to aneurysm formation.
low-density lipoprotein (LDL) - ANSWER✔✔blood fat that transports cholesterol
to organs and tissues; excess amounts result in the accumulation of fatty deposits
on artery walls.
<100
Which factor is responsible for hypertrophy of the myocardium associated with
HTN? - ANSWER✔✔Angiotensin II
Stimulates increased cardiac preload and afterload leading to hypertrophy, poor
myocardial compliance, and ventricular dilation. Causes sarcomere death,
abnormal collagen matrices, and interstitial fibrosis.
What gland produces Antidiuretic hormone? - ANSWER✔✔posterior pituitary
gland
T3 and T4 are regulated by - ANSWER✔✔TSH
What causes SIADH? - ANSWER✔✔Too much ADH.
Increased intravascular volume, decreased urine production, electrolyte
disturbance.
CNS - stroke, hemorrhage, infection, trauma
Medications - narcotics, oxytocin, chlorpropamide, antiepileptic agents
Trauma - pain is a powerful stimulus for ADH. What for post op pts who is
receiving fluids
Lung - simple pneumonia or ADH secreting small cell cancer of the lung.
, Hypothyroidism - ANSWER✔✔High TSH, low T3 and T4
During the body's inflammatory process, what causes edema?
-Vasodilation of blood vessels
-Emigration of neutrophils
-Endothelial cell expansion
-Increased capillary permeability - ANSWER✔✔Increased capillary permeability
The increased flow and capillary permeability result in a leakage of plasma from
the vessels causing swelling (edema) in the surrounding tissue and is solely
responsible for inflammation induced edema
A 56-year-old diabetic patient has not taken his insulin in 4 days due to him"
feeling well without it". He is admitted to the ED with an elevated blood sugar.
What electrolyte should be assessed FIRST?
-Calcium
-Sodium
-Potassium
-Chloride - ANSWER✔✔Potassium
Insulin facilitates the intracellular transport of potassium, phosphate, and
magnesium. Without insulin, potassium does not get transported to the intracellular
environment and the serum potassium will rise.
A 46-year-old woman is considering having another child. The healthcare
providers are explaining to the woman that children born to women late in life
have an increased rate of having children with this condition.
-Kawasaki's disease
-Down syndrome
-Klinefelter syndrome
WITH VERIFIED SOLUTIONS 100%
CORRECT (GRADED+) NEWLY
UPDATED 2025/2026
What does aldosterone regulate?
✔✔ Reabsorption of sodium and water (indirectly the excretion of potassium)
📝 Aldosterone increases sodium and water retention in the kidneys while
promoting potassium excretion, thereby helping to regulate blood pressure and
fluid balance.
What causes the edema that occurs during the inflammatory process?
✔✔ Increased vascular permeability
📝 Vasodilation increases pressure in the blood vessels, allowing plasma to leak
into surrounding tissues, causing swelling (edema).
Klinefelter Syndrome
✔✔ A chromosomal disorder in which males have an extra X chromosome
(XXY instead of XY).
Symptoms include:
High-pitched voice
Mental impairment
Sparse body hair
Small testes
Gynecomastia
Alpha Thalassemia
✔✔ A genetic blood disorder caused by deletions in alpha-globin genes,
,leading to reduced hemoglobin production.
📝 Each parent can carry a defective gene, giving future offspring a 25% chance of
inheriting the disease.
Blood Flow of the Heart
✔✔
Oxygen-poor blood enters the right atrium from the vena cava
Flows into the right ventricle
Pumped into the pulmonary artery → lungs
Oxygen-rich blood returns via pulmonary veins to the left atrium
Flows into the left ventricle
Pumped out through the aorta to the body
What happens during diastole?
✔✔ The heart is relaxed, semilunar valves are closed, and blood flows from
atria to ventricles under low pressure.
What happens during systole?
✔✔ Heart muscles contract; pressure forces pulmonary and aortic valves
open.
Right ventricle → blood to lungs
Left ventricle → blood to body via aorta
QRS Complex
✔✔ Represents ventricular depolarization and atrial repolarization
What effect does atherosclerosis have on the development of an aneurysm?
✔✔ It erodes the vessel wall.
,📝 Plaque buildup makes vessels less flexible and more prone to rupture,
contributing to aneurysm formation.
low-density lipoprotein (LDL) - ANSWER✔✔blood fat that transports cholesterol
to organs and tissues; excess amounts result in the accumulation of fatty deposits
on artery walls.
<100
Which factor is responsible for hypertrophy of the myocardium associated with
HTN? - ANSWER✔✔Angiotensin II
Stimulates increased cardiac preload and afterload leading to hypertrophy, poor
myocardial compliance, and ventricular dilation. Causes sarcomere death,
abnormal collagen matrices, and interstitial fibrosis.
What gland produces Antidiuretic hormone? - ANSWER✔✔posterior pituitary
gland
T3 and T4 are regulated by - ANSWER✔✔TSH
What causes SIADH? - ANSWER✔✔Too much ADH.
Increased intravascular volume, decreased urine production, electrolyte
disturbance.
CNS - stroke, hemorrhage, infection, trauma
Medications - narcotics, oxytocin, chlorpropamide, antiepileptic agents
Trauma - pain is a powerful stimulus for ADH. What for post op pts who is
receiving fluids
Lung - simple pneumonia or ADH secreting small cell cancer of the lung.
, Hypothyroidism - ANSWER✔✔High TSH, low T3 and T4
During the body's inflammatory process, what causes edema?
-Vasodilation of blood vessels
-Emigration of neutrophils
-Endothelial cell expansion
-Increased capillary permeability - ANSWER✔✔Increased capillary permeability
The increased flow and capillary permeability result in a leakage of plasma from
the vessels causing swelling (edema) in the surrounding tissue and is solely
responsible for inflammation induced edema
A 56-year-old diabetic patient has not taken his insulin in 4 days due to him"
feeling well without it". He is admitted to the ED with an elevated blood sugar.
What electrolyte should be assessed FIRST?
-Calcium
-Sodium
-Potassium
-Chloride - ANSWER✔✔Potassium
Insulin facilitates the intracellular transport of potassium, phosphate, and
magnesium. Without insulin, potassium does not get transported to the intracellular
environment and the serum potassium will rise.
A 46-year-old woman is considering having another child. The healthcare
providers are explaining to the woman that children born to women late in life
have an increased rate of having children with this condition.
-Kawasaki's disease
-Down syndrome
-Klinefelter syndrome
