NURS 5315 ADVANCED PATHOPHYSIOLOGY UTA ACTUAL MIDTERM
EXAM WITH COMPLETE SOLUTIONS |A GRADE
Ovarian cancer site of metastasis?
Peritoneal surfaces, omentum (fold of peritoneum connecting the stomach with other
abdominal organs), liver
The increased NADH/NAD+ ratio in the liver from ethanol causes:
1. Pyruvate --> lactic acid, causing lactic acidosis
2. Oxaloacetate --> malate. This prevents gluconeogenesis and leads to hypoglycemia
3. Glyceraldehyde-3-phosphate --> glycerol 3- phosphate and combines with fatty acids to form
triglycerides in the liver, known as hepatosteatosis
4. Decreases citric acid cycle production of NADH and leads to using Acetyl-CoA for ketogenesis
and lipogenesis
What can Reactive Oxygen Species cause?
Heart disease, Alzheimers, Parkinsons, Amyotrophic Lateral Sclerosis (ALS), CV disease, HTN,
HLD, DM, ischemic heart disease, HF, OSA. Lipid perioxidation, damage proteins, fragment DNA,
less protein synthesis, chromatin destruction, damage mitochondria
What is the body's defense against ROS?
Antioxidants (Vitamin E, Vitamin C, cysteine, glutathione, albumin, ceruloplasmin, transferrin)
,How are free radicals produced?
1. Normal cellular respiration
2. Absorption of extreme energy sources (radiation, UV light)
3. Metabolism of exogenous chemicals, drugs, and pesticides
4. Transition of metals
5. Nitric oxide acting like a chemical mediator and a free radical
action potential
Process of conducting an impulse. Activates the neuron --> the neuron depolarizes --> then
repolarizes
Threshold potential
Point at which depolarization must reach in order to initiate an action potential
Hypokalemia and action potentials
HYPERpolarized (more negative, ex. -100). Less excitable. Decreased neuromuscular excitability:
weakness, smooth muscle atony, paresthesia, cardiac dysrhythmias
Hyperkalemia and action potentials
HYPOpolarized (more positive, ex: closer to 0). More excitable. Peaked T waves.
When resting membrane potential=threshold potential, it is BAD = cardiac standstill,
paresthesia, paralysis
,Hypocalcemia and action potentials
Increased permeability to Na+. More excitable. Tetany, hyperreflexia, circumoral paresthesia,
seizures, dysrhythmias.
Hypercalcemia and action potentials
Decreased permeability to Na+. Less excitable. Weakness, hyporeflexia, fatigue, lethargy,
confusion, encephalopathy, depressed T waves
Atrophy
Occurs as a result of decrease in work load, pressure, use, blood supply, nutrition, hormonal
stimulation, or nervous stimulation. Once the cell has decreased in size, it has now
compensated for decreased blood supply, nerve supply, nutrient supply, hormonal supply, and
has achieved new homeostasis. Cells are alive but have diminished function and may lead to
cellular death.
Atrophy examples
Physiologic atrophy- shrinking of the thymus gland during childhood.
Disuse atrophy- someone that ends up being paralyzed
Hypertrophy
Increase in SIZE of cells, which will lead to increase in size of organ. Caused by hormonal
stimulation or increased functional demand.
, Hypertrophy examples
physiologic hypertrophy- skeletal hypertrophy when a person does heavy work or weight lifting
/ when a kidney is surgically removed, the other kidney increases in size
pathologic hypertrophy- cardiomegaly results from an increased workload in hypertensive
patients / left ventricular hypertrophy
Hyperplasia
Increase in NUMBER of cells. Results from increased rate of mitosis. Can ONLY happen in cells
that are capable of mitosis (cell division).
Hyperplasia examples
1. Thickening of skin because of hyperplasia of epidermal cells.
2. Hormonal hyperplasia- occurs in estrogen dependent organs like uterus and breast.
3. Compensatory hyperplasia- liver regenerates, callus on skin
4. Pathologic hyperplasia- estrogen is unopposed by progesterone and the endometrial lining
undergoes hyperplasia and increased risk for endometrial cancer
Dysplasia
abnormal changes in the size, shape, and organization of mature cells due to persistent, severe
cell injury or irritation
EXAM WITH COMPLETE SOLUTIONS |A GRADE
Ovarian cancer site of metastasis?
Peritoneal surfaces, omentum (fold of peritoneum connecting the stomach with other
abdominal organs), liver
The increased NADH/NAD+ ratio in the liver from ethanol causes:
1. Pyruvate --> lactic acid, causing lactic acidosis
2. Oxaloacetate --> malate. This prevents gluconeogenesis and leads to hypoglycemia
3. Glyceraldehyde-3-phosphate --> glycerol 3- phosphate and combines with fatty acids to form
triglycerides in the liver, known as hepatosteatosis
4. Decreases citric acid cycle production of NADH and leads to using Acetyl-CoA for ketogenesis
and lipogenesis
What can Reactive Oxygen Species cause?
Heart disease, Alzheimers, Parkinsons, Amyotrophic Lateral Sclerosis (ALS), CV disease, HTN,
HLD, DM, ischemic heart disease, HF, OSA. Lipid perioxidation, damage proteins, fragment DNA,
less protein synthesis, chromatin destruction, damage mitochondria
What is the body's defense against ROS?
Antioxidants (Vitamin E, Vitamin C, cysteine, glutathione, albumin, ceruloplasmin, transferrin)
,How are free radicals produced?
1. Normal cellular respiration
2. Absorption of extreme energy sources (radiation, UV light)
3. Metabolism of exogenous chemicals, drugs, and pesticides
4. Transition of metals
5. Nitric oxide acting like a chemical mediator and a free radical
action potential
Process of conducting an impulse. Activates the neuron --> the neuron depolarizes --> then
repolarizes
Threshold potential
Point at which depolarization must reach in order to initiate an action potential
Hypokalemia and action potentials
HYPERpolarized (more negative, ex. -100). Less excitable. Decreased neuromuscular excitability:
weakness, smooth muscle atony, paresthesia, cardiac dysrhythmias
Hyperkalemia and action potentials
HYPOpolarized (more positive, ex: closer to 0). More excitable. Peaked T waves.
When resting membrane potential=threshold potential, it is BAD = cardiac standstill,
paresthesia, paralysis
,Hypocalcemia and action potentials
Increased permeability to Na+. More excitable. Tetany, hyperreflexia, circumoral paresthesia,
seizures, dysrhythmias.
Hypercalcemia and action potentials
Decreased permeability to Na+. Less excitable. Weakness, hyporeflexia, fatigue, lethargy,
confusion, encephalopathy, depressed T waves
Atrophy
Occurs as a result of decrease in work load, pressure, use, blood supply, nutrition, hormonal
stimulation, or nervous stimulation. Once the cell has decreased in size, it has now
compensated for decreased blood supply, nerve supply, nutrient supply, hormonal supply, and
has achieved new homeostasis. Cells are alive but have diminished function and may lead to
cellular death.
Atrophy examples
Physiologic atrophy- shrinking of the thymus gland during childhood.
Disuse atrophy- someone that ends up being paralyzed
Hypertrophy
Increase in SIZE of cells, which will lead to increase in size of organ. Caused by hormonal
stimulation or increased functional demand.
, Hypertrophy examples
physiologic hypertrophy- skeletal hypertrophy when a person does heavy work or weight lifting
/ when a kidney is surgically removed, the other kidney increases in size
pathologic hypertrophy- cardiomegaly results from an increased workload in hypertensive
patients / left ventricular hypertrophy
Hyperplasia
Increase in NUMBER of cells. Results from increased rate of mitosis. Can ONLY happen in cells
that are capable of mitosis (cell division).
Hyperplasia examples
1. Thickening of skin because of hyperplasia of epidermal cells.
2. Hormonal hyperplasia- occurs in estrogen dependent organs like uterus and breast.
3. Compensatory hyperplasia- liver regenerates, callus on skin
4. Pathologic hyperplasia- estrogen is unopposed by progesterone and the endometrial lining
undergoes hyperplasia and increased risk for endometrial cancer
Dysplasia
abnormal changes in the size, shape, and organization of mature cells due to persistent, severe
cell injury or irritation
