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Physio > Q1 > Flashcards

Q1 Flashcards

1
Q

which drug has the higher affinity to the receptor?

A

Drug B

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2
Q

what protein property does this graph show?

A

competition

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3
Q

What protein property does this graph show?

A

saturation

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4
Q

What protein property does this graph show?

A

specificity

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5
Q

which drug would have a low Kd value for the receptor?

A

Drug B

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6
Q

What could you do to help the cell achieve a greater maximum than what is shown?

A

add more receptors

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7
Q

What substances would NOT be able to cross the plasma membrane that is composed only of phospholipids

A

Amino Acids
Glucose

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8
Q

What substances would be able to cross the plasma membrane that is composed only of phospholipids

A

Steriods
H2O
O2
Ethanol

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9
Q

what is an example of tonic level of activity?

A

increasing sympathetic activity to increase heart rate, and decreasing heart rate to decrease heart rate

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10
Q

The _______ the threshold stimulus the narrower the normal range

A

smaller

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11
Q

the greater the threshold stimulus the _______ the normal range.

A

wider

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12
Q

what is an example of antagonist control?

A

sympathetic nervous system increase heart rate, parasympathetic decreases heart rate

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13
Q

What keeps the temperature fluctuating around the set point.

A

negative feedback loop

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14
Q

the intensity of uterine smooth muscle contractions increases as the uterus contracts is negative or postive feedback?

A

Postive

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15
Q

An increase in blood pressure stimulates blood vessels to dilate to decrease blood pressure is negative of postitive feedback?

A

negative

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16
Q

Following a meal, insulin is secreted to lower blood glucose is negative or positive feedback?

A

negative

17
Q

An increase in blood CO2 levels increases the respiration rate to reduce CO2 levels is negative or positive feedback?

A

negative

18
Q

Sweating in response to an increase in body temperature is negative of postive feedback?

A

negative

19
Q

In the absence of a competitive inhibitor, which ligand/receptor combination will have the smallest Kd value?

A

Ligand B/Delta receptor

20
Q

Which receptor has the higher affinity for the competitive inhibitor?

A

Delta receptor

21
Q

In the absence of a competitive inhibitor, which ligand/receptor combination will have the smallest Kd value?

A

Ligand B/Omega receptor

22
Q

Which receptor has the higher affinity for the competitive inhibitor?

A

Omega receptor

23
Q

(T/F )The afferent pathway is only found in reflexes mediated by the nervous system

A

true

24
Q

(T/F ) The efferent pathway sends commands from integrating center to effectors

A

true

25
Q

(T/F )Feedback regulation to the reflex receptor is mediated by the systemic effector response.

A

true

26
Q

(T/F )Motor neurons makeup the efferent pathway in a reflex mediated by the nervous system

A

true

Physio (34 decks)

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