Cellular Physiology 2 Flashcards
1
Q
EM =
A
RT/F log e (Ko/ Ki)
2
Q
RMP determined by K+ gradient because
A
- K+ leakage that affects charge -> 150mM -> 4mM
- gradient of Na+ maintained
- Ek close to RMP - dynamic diffusion potential
3
Q
How do cells communicate?
A
- Diffusible chemical signals
- Direct surface contact between adjacent cells e.g. gap junction in cardiac myosin
- Direct cytoplasmic contact via gap junctions
4
Q
Autocrine signalling affects
A
Secreting cell
5
Q
Endocrine and Pancrine signalling differs in
A
Quantity of chemical secreted
6
Q
Hormones are restricted by
A
specificity
7
Q
Benefits of synaptic signalling
A
Diverse, 10 chemical classes from inorganic gas to esters
8
Q
Receptors that detect water soluble signals are located in
A
plasma membrane
