Introduction Flashcards

1
Q

How many paracetamol can kill someone?

A

20

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2
Q

What can chronic dosing of eight tablets a day do?

A

affect liver function

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3
Q

What is the aim of a living system?

A

Maximise order- requires energy

Minimise disorder

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4
Q

What leads to poor health?

A

Molecules not in the right place, amount, time, environment or temperature

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5
Q

What is pharmacology?

A

studies the effects of molecules with defined effects on physiological and biochemical activity of cells up through to the level of a person

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6
Q

What is endogenous?

A

within the body

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7
Q

What is exogenous I?

A

Natural

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8
Q

What is exogenous II?

A

Synthetic

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9
Q

What is clinical pharmacology?

A

understanding endogenous signalling molecules and there cellular targets

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10
Q

What does MEF stand for?

A

Matter, energy and fields

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11
Q

What does a cell require?

A

Substrate supply system, product distribution system, waste removal system

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12
Q

How is homeostasis controlled?

A

Negative feedback

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13
Q

What does homeostasis need?

A
Something needing controlling
Sensor
Set point
Error signal
Controller
Effector
Communication routes
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14
Q

What are the temperature ranges for hyperthermia?

A

38-40

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15
Q

What are the temperature ranges for hypothermia?

A

34-36 (mid-mild)

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16
Q

What does the endocrine system use to communicate?

A

Hormones that act over long distances through blood stream

e.g. digestion, metabolism, growth, metabolism, sexual

17
Q

What are the different types of hormones?

A

Amines- hydrophilic- seconds- cytosolic second messenger
Peptides and Proteins- hydrophilic - minutes- protein kinase
Steriods- lipophilic (intracellular receptors)- hours

18
Q

How are hormones used exogenously?

A

Adrenaline- IV

Steroids- anti inflammatory

19
Q

Where do paracrine hormones targetted?

A

Nearby cells e.g. neurotransmitters

20
Q

What does excitatory mean?

A

Signal increase firing rate post synaptically

21
Q

What does Inhibitory mean?

A

Signal decrease firing rate post synaptically

22
Q

What does RITE stand for?

A

Receptor
Ion channel
transporter
enzyme

23
Q

What is RITE?

A

Drug targets

24
Q

What does KING stand for?

A

Kinase Linked receptors
Ion channels
Nuclear/Intracellular
G protein coupled receptors

25
What do Kinase linked receptors do?
Mediate signals of proteins e.g. growth factors cytokines hormones Does this via phosphorylation of specific groups - cascade
26
What do ion channels ligand gated do?
Bind with ligand gate ion current for duration of binding- many fast neurotransmitters e.g. ACh, GABA and NMDA Allow ion currents and voltage change driving of modulating action potential generation in neurones and
27
What do nuclear/intracellular receptors do?
Ligands are steroids When binds migrated gene transcription factor in the nucleus Activates or inactivates a set of genes
28
What do G protein coupled receptors do?
GPCR's Slow neurotransmitters Three types- S, I, Q
29
What are the 4 major ion currents?
Na+, K+, Ca2+, Cl-
30
What do ion channels do?
Enable selective flow of ion current down its electrochemical gradient
31
When might a molecule need transport?
If highly polar or going against gradient - uses ATP
32
What are some important examples of neurotransmiter re-uptake transport?
Noradrenaline, Glutamate, Serotonin