Cell Signalling Flashcards
1
Q
What are the reasons for cell communication?
A
Info Processing: Sensory stimulation e.g. Sight
Self preservation: Danger identification e.g. reflexes
Voluntary movement
Homeostasis
2
Q
What happens under hypoglycemic conditions?
A
Glycogenolysis and Gluconeogenesis
Alpha cells of IoL secrete glucagon
3
Q
Describe Adenyl Cyclase activation
A
Adenyl Cyclase converts ATP to cAMP; activated by Gs protein and activates protein kinase A in B1-adrenergic receptors to increase heart rate
4
Q
Describe Adenyl Cyclase inhibition:
A
if ACh binds to M2-muscarinic receptors, adenyl cyclase is inhibited lowering heart rate
5
Q
What are the two types of Intracellular receptor?
A
Cytoplasmic (associated w/ chaperone molecules)
Nuclear (no chaperone molecules)
