Cell Dynamics Flashcards
1
Q
Sodium Pump
A
pumps Na+ out of cell , K+ in cell
- requires ATP
2
Q
Osmolarity Equation
A
O = g x C
g - # particles
C - [ ]
3
Q
Resting Membrane Potential of a cell
A
-70mV
at rest Na+ is pumped out
4
Q
ACh is used where
A
skeletal muscle, neuro jx
5
Q
Adrenergic Receptor alpha-1 located where?
A
post-synaptic sympathetic
- BV causing vasoconstriction EXCITATORY
- GI & GU causing INHIBITION
6
Q
Adrenergic Receptor alpha-2 located where?
A
presynaptic sympathetic
- BRAIN (CNS)
- decrease catecholamine release and decrease sympathetic tone
- think NEGATIVE FEEDBACK
7
Q
Adrenergic Receptor beta-1 located where?
A
HEART
EXCITATORY
postsynaptic sympathetic - increase HR, etc.
8
Q
Adrenergic Receptor beta-2 located where?
A
LUNGS
post-synaptic sympathetic
INHIBITION - dilation of vessels and bronchioles
9
Q
enough postsynaptic firing to cause a new AP
A
excitatory postsynaptic potential, EPSP
10
Q
inhibition of AP dt hyperpolarization
A
IPSP, inhibitory postsynaptic potential
