Zusammenfassung at Paracelsus Medizinische Privatuniversität Salzburg | Flashcards & Summaries

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After extensive testing, a 60-year-old man is found to have a pheochromocytoma that secretes mainly epinephrine.

Symptomatic treatment would be best achieved in this man with

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phentolamine

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The principle of positive feedback is illustrated by the effect of

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PO2 on breathing rate

Lösung ausblenden
TESTE DEIN WISSEN

Osmolarity = g x C

= 2 Osm/mol x 1M

= 2 Osm/L


A negative free-water clearance would occur in a person

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who drinks 2L of water in 30 min

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CO2 generated in the tissues is carried in venous blood primarily as

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CO2 in the plasma

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In a 35-day menstrual cycle, ovulation occurs on day

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12

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Which of the following hormones stimulates the conversion of testosterone to 17ß-estradiol in ovarian granulosa cells?

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TESTE DEIN WISSEN

Adrenocorticotropic hormone (ACTH)

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Which gastrointestinal secretion is hypotonic, has a high [HCO3 - ] and has its production inhibited by vagotomy?


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Saliva

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TESTE DEIN WISSEN

A 53-year old man with multiple myeloma is hospitalized after 2 days of polyuria, polydipsia and increasing confusion. Laboratory tests show an elevated serum [Ca2+ ] of 15 mg/dl, and treatment is initiated to decrease it. The patient's serum osmolarity is 310 mOsm/L


The most likely reason for polyuria in this man is

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TESTE DEIN WISSEN

increased circulating levels of antidiuretic hormone (ADH)

Lösung ausblenden
TESTE DEIN WISSEN

A 53-year old man with multiple myeloma is hospitalized after 2 days of polyuria, polydipsia and increasing confusion. Laboratory tests show an elevated serum [Ca2+ ] of 15 mg/dl, and treatment is initiated to decrease it. The patient's serum osmolarity is 310 mOsm/L


The treatment drug is administered in error and produces a further increase in the patient's serum [Ca2+ ] . That drug is

Lösung anzeigen
TESTE DEIN WISSEN

a thiazide diuretic

Lösung ausblenden
TESTE DEIN WISSEN

Which of the following substances acts on its target cells via an inositol 1,4,5-triphosphate (IP3) - Ca2+ mechanism?


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TESTE DEIN WISSEN

Somatomedins acting on chondrocytes

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TESTE DEIN WISSEN

A key difference in the mechanism of excitation-contraction coupling between the muscle of the pharynx and the muscle of the wall of the small intestine is that

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TESTE DEIN WISSEN

slow waves are present in the pharynx, but not in the small intestine

Lösung ausblenden
TESTE DEIN WISSEN

After extensive testing, a 60-year-old man is found to have a pheochromocytoma that secretes mainly epinephrine.

Which of the following signs would be expected in this patient?

Lösung anzeigen
TESTE DEIN WISSEN

Decreased heart rate

Lösung ausblenden
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Q:

After extensive testing, a 60-year-old man is found to have a pheochromocytoma that secretes mainly epinephrine.

Symptomatic treatment would be best achieved in this man with

A:

phentolamine

Q:

The principle of positive feedback is illustrated by the effect of

A:

PO2 on breathing rate

Q:

Osmolarity = g x C

= 2 Osm/mol x 1M

= 2 Osm/L


A negative free-water clearance would occur in a person

A:

who drinks 2L of water in 30 min

Q:

CO2 generated in the tissues is carried in venous blood primarily as

A:

CO2 in the plasma

Q:

In a 35-day menstrual cycle, ovulation occurs on day

A:

12

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Q:

Which of the following hormones stimulates the conversion of testosterone to 17ß-estradiol in ovarian granulosa cells?

A:

Adrenocorticotropic hormone (ACTH)

Q:

Which gastrointestinal secretion is hypotonic, has a high [HCO3 - ] and has its production inhibited by vagotomy?


A:

Saliva

Q:

A 53-year old man with multiple myeloma is hospitalized after 2 days of polyuria, polydipsia and increasing confusion. Laboratory tests show an elevated serum [Ca2+ ] of 15 mg/dl, and treatment is initiated to decrease it. The patient's serum osmolarity is 310 mOsm/L


The most likely reason for polyuria in this man is

A:

increased circulating levels of antidiuretic hormone (ADH)

Q:

A 53-year old man with multiple myeloma is hospitalized after 2 days of polyuria, polydipsia and increasing confusion. Laboratory tests show an elevated serum [Ca2+ ] of 15 mg/dl, and treatment is initiated to decrease it. The patient's serum osmolarity is 310 mOsm/L


The treatment drug is administered in error and produces a further increase in the patient's serum [Ca2+ ] . That drug is

A:

a thiazide diuretic

Q:

Which of the following substances acts on its target cells via an inositol 1,4,5-triphosphate (IP3) - Ca2+ mechanism?


A:

Somatomedins acting on chondrocytes

Q:

A key difference in the mechanism of excitation-contraction coupling between the muscle of the pharynx and the muscle of the wall of the small intestine is that

A:

slow waves are present in the pharynx, but not in the small intestine

Q:

After extensive testing, a 60-year-old man is found to have a pheochromocytoma that secretes mainly epinephrine.

Which of the following signs would be expected in this patient?

A:

Decreased heart rate

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