The G-protein receptor system and tyrosine-kinase receptor system are two distinct mechanisms of signal transduction. G-protein-coupled receptors (GPCRs) activate intracellular signaling through the binding of G-proteins, which then trigger various downstream effects, often involving second messengers like cAMP or calcium ions. In contrast, tyrosine-kinase receptors, upon ligand binding, undergo dimerization and autophosphorylation, leading to the activation of multiple signaling pathways primarily involved in growth and differentiation. Thus, the main difference lies in their mechanisms of activation and the types of cellular responses they mediate.
Somatic system
The M2 muscarinic acetylcholine receptor is the primary receptor found in effector organs of the parasympathetic system. Activation of this receptor leads to inhibition of adenylate cyclase and decreased intracellular levels of cyclic AMP, resulting in various physiological responses in target tissues.
peripheral nervous system consist of nerves conveying impulses from brain to sense receptor and from sense receptor to brain.
A cannabinoid receptor is any of several receptors, found in the central nervous system, which bind to cannabinoids.
Receptor tyrosine kinases do not require the use of second messengers while G protein-coupled receptors need.
ok
The magnitude of a receptor potential determines the strength of the stimulus detected by the sensory receptor. A larger receptor potential indicates a stronger stimulus, while a smaller receptor potential indicates a weaker stimulus. This information is then transmitted to the central nervous system for further processing and perception.
receptor cells - apex
Nerve impulses are transmitted from the receptor to the central nervous system via sensory neurons. In the central nervous system, the impulse is processed and may be relayed to motor neurons that carry the impulse to effectors such as muscles or glands to produce a response. This pathway allows for communication and coordination between different parts of the body.
Receptor/Sensor-Recognition of the factor.
Transduction usually begins when a sensory receptor detects a stimulus, such as light or pressure. The receptor then translates this stimulus into an electrical signal that can be interpreted by the nervous system.
The receptor cells of the somatosensory system perceive tactile sensations such as touch. They also perceive temperature, proprioception,?æand pain.