Yes the sensory receptor is the first element.
First order sensory neurons begin in the receptor, travel to dorsal/posterior gray horn of the spinal cord where they synapse with the second order sensory neurons.
The first pathway of photosynthesis is the light reaction, which is the absorption of light energy from the sun by the chlorophyll in the plant. The pathway that follows this is the dark reaction or carbon fixation.
Blood coagulation can occur either through an intrinsic or extrinsic pathway. The first step in either pathway begins with the production of Factor X,which marks the common pathway of coagulation.
ATP/CP Pathway, Glycolytic Pathway, Oxidative Pathway
Receptor potential, a type of graded potential, is the transmembrane potential difference of a sensory receptor. A receptor potential is often produced by sensory transduction. It is generally a depolarizing event resulting from inward current flow. The influx of current will often bring the membrane potential of the sensory receptor towards the threshold for triggering an action potential. A receptor potential is a form of graded potential, as is a generator potential. It arises when the receptors of a stimulus are separate cells. An example of this is in a taste bud, where taste is converted into an electrical signal sent to the brain. When stimulated the taste bud triggers the release of neurotransmitter through exocytosis of synaptic vesicles from the presynaptic membrane. The neurotransmitter molecules diffuse across the synaptic cleft to the postsynaptic membrane. A postsynaptic potential is then produced in the first order neuron, and if the stimulus is strong enough to reach threshold this may generate an action potential which may propagate along the axon into the central nervous system
I- Olefactory (sensory): smell. II- Optic (sensory): vision.
Partial spinal sensory syndrome was first described in 1849
Most sensory information goes to the thalamus first.
A receptor is generally a recognition molecule situated on the surface of a cell. A receptor is a molecule that is sensitive to a particular signal and is also able to transmit information to the nucleus in order to control gene regulation. In order for a receptor to function, it must first be activated. The binding of a ligand to the receptor places the receptor in the activated state. Once the receptor is activated, it is now able to transmit signal to the interior of the cell.
Receptor-mediated endocytosis: only a specific molecule, called a ligand, can bind to the receptor. Without receptor binding occurring first, endocytosis does not proceed.
The First Word
Receptor neurons in the nostrils first detect an odor by coming into contact with and reacting to gas molecules of the substance. Then the receptor neurons send information about the odor along the olfactory nerve to the brain.
first introduction to discuss the pathway of glucose's
The product inhibits the activity of the first enzyme