11.1 Local And Long Distance Signaling Flashcards
Cell to cell recognition
Communication by membrane bound surface molecules
- embryonic development
- immune response
Types of direct communication
Cell junctions
Cell to cell recognition
Local signaling
Messenger molecules that travel short distances
Paracrine signaling
Synaptic signaling
Growth factors
Compounds that stimulate nearby target cells to grow and divide
Aka type of paracrine signaling
Paracrine signaling
A secreting cell acts on nearby target cells by discharging molecules of a local regulator
Synaptic signaling where
Animal nervous system
Synaptic signaling
An electrical signal along a nerve cell triggers the secretion of a chemical signal carried by a neurotransmitter molecule
These diffuse across the synapse
Nerve cell -> target cell
Hormones
Long distance signaling
Hormonal signaling on animals
Endocrine signaling
Endocrine signaling
Specialized cells release hormone molecules the a travel the circulatory system to target cells
Pant hormones
Plant growth regulators
Plant growth
Plant growth regulators diffuse through air or move through cells
How does the nervous system work
Long distance
- electrical signal along. Nerve cell
- converted to chemical signal
- crosses the synapse
- converted to electrical