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preganglionic neuron
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What are the first and last elements in a spinal reflex?
motor neuron and sensory neuron
Part of the nerve cell that first receives the nervous impulse is the?
The dendrite of a neuron usually receives a chemical signal from another neuron, although a cell body (soma), or sometimes even an axon, of another neuron can receive the signal.Synapses which occur between an axon and a dendrite are called axodendritic synapses, while synapses between an axon and a cell body are called axosomatic synapses, and synapses between an axon and an axon are called axoaxonic synapses.
Where do motor neurons carry signals from?
The entire signal travels in the neuron by a graded potential which is created in the dendrites and the body (soma) of the neuron, then it reaches a spot of the neuron which is called the axon-hillock where the signal now for the first time has encountered "voltage-gated channels" and now can create an Action potential that can propagate through the terminus of the neuron which is the length of the axon.
The first forms of life that produced ATP probably used pathways similar to what?
ATP/CP Pathway, Glycolytic Pathway, Oxidative Pathway
What are the structures and functions of a reflex arc?
A reflex is a rapid, involuntary response to a stimulus such as a hot stove.The reflex arc is the pathway traveled by the nerve impulses during a reflex. Most reflexes are pathways that traverse only the spinal cord.During a spinal reflex, information may be transmitted to the brain, but it is the spinal cord that is responsible. They can happen faster than you can think about it.A reflex arc involves the following components:The receptor is the part of the neuron (usually a dendrite) that detects a stimulus (burn).The sensory neuron transmits the impulse to the spinal cord.The integration center involves one, two or more synapses in the gray matter of the spinal cord.A motor neuron transmits a nerve impulse from the spinal cord to a peripheral region.An effector is a muscle or gland that receives the impulse form the motor neuron (remove the hand). In somatic reflexes, the effector is skeletal muscle. In autonomic reflexes, the effector is smooth or cardiac muscle, or a gland.
What is the first order of neuron of taste pathway?
bipolar ganglion
What are the first and last elements in a spinal reflex?
motor neuron and sensory neuron
The first pathway of photosynthesis was?
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.
If an impulse down one neuron but failed to move on to the next neuron what is wrong with the first neuron?
It is possible that nothing is wrong with the first neuron and that the second neuron has been desensitized, or if it is the first neuron then vesicles are not fusing with the membrane and releasing neurotransmitters. This could be because a toxin has damaged the proteins that control vesicle integration, or because the calcium channels have been blocked, or in the lab setting the terminal may have run out of neurotransmitter.
What is the branching fiber that is the first part of the neuron to receive a nervous system impulse called?
The branching fiber that is the first part of the neuron to receive a nervous system impulse is called a dendrite. Dendrites receive signals from other neurons or sensory receptors and transmit these signals to the cell body of the neuron. They play a crucial role in receiving and integrating incoming information in the nervous system.
If an impulse traveled down one neuron but failed to move on to the next neuron what happened to the first neuron?
Vesicle are not fusing with the membrane and releasing neurotransmitter.
What are the steps of Coagulation pathway?
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.
The first pathway of cellular respiration is?
glycolysis.
When you touch something hot, a neuron in your finger senses the temperature. Which best describes the first reaction the neuron has?
An action potential forms :) -Apex-
When you touch something hot a neuron in your senses the temperature. which happens first?
an action potential moves along the neuron
Which neuron delivers sensations to the cns?
Afferent neurons receive and transmit impulses to the CNS.
What does the axon bulb do?
It starts the transmission of a neural signal from one neuron to another.An axon ends in an axon terminal, which ends in a small rounded tip called the axon bulb. Each terminal lies very close to either a dendrite or a cell body of another neuron, and the combination of the end of the first neuron, the beginning of the next, and the space between them is known as a synapse; when a neural impulse reaches the axon bulb, it is stimulated to release chemical messengers called neurotransmitters into the synaptic cleft (gap), which diffuse over to the second neuron, conveying the signal to the second neuron.
