answersLogoWhite

0

If you step on a pin, pain sensation goes along the sensory nerve. It's nucleus is placed in dorsal nerve root. Then the nerve fibre enters the posterior horn of spinal cord. From here you have second neuron going to anterior horn cell. Another going to higher centers. Third neuron goes to muscle. It is known as motor neuron. Together it forms a reflex arc. The leg is withdrawn immediately, before you know about pin prick.

User Avatar

Wiki User

12y ago

What else can I help you with?

Related Questions

First step in a reflex arc?

A reflex arc involves the following components:The receptor is the part of the neuron (usually a dendrite) that detects a stimulus.The sensory neuron transmits the impulse to the spinal cord.The integration center involves one synapse (monosynaptic reflex arc) or two or more synapses (polysynaptic reflex arc) 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 from the motor neuron. In somatic reflexes, the effector is skeletal muscle. In autonomic (visceral) reflexes, the effector is smooth or cardiac muscle, or a gland.


What is the first step in epinephrine signaling?

The first step in epinephrine signaling is the binding of epinephrine to its receptor on the cell membrane, typically a G protein-coupled receptor. This binding initiates a cascade of intracellular signaling events that ultimately lead to the desired physiological response.


What are some steps your class might take to design a recycling program?

Step 1: Select a recycling coordinator Step 2:Conduct a waste audit Step 3: Collect items


A cardholder would like to make a purchase that exceeds the monthly limit on the purchase card What is the next step?

Seek approval for an increase in his/her monthly limit from his/her Agency/Organization Program Coordinator (A/OPC)


What is receptor dimerization?

Receptor dimerization is the joining of the receptor proteins. It this step does not take place, then the responder protein will not autophosphorylate. Signal transduction will not occur if the receptor proteins do not join together.


What method of entry does the virus use in step 2 of the lytic cycle?

The virus attaches to a specific receptor on the host cell membrane, allowing it to enter the cell through receptor-mediated endocytosis or direct fusion with the host cell membrane in the second step of the lytic cycle.


What cell determine cell activities?

The binding of a hormone to a receptor is the first step. Target cell activation by hormone-receptor interaction depends equally on 3 factors. First the blood levels of the hormone, second ,relative numbers of receptors for that hormone on or in the target cells and the third ,strength of the binding between the hormone cell and the receptors.


What relation is your step sons children?

Your step-son is the child of your spouse and another person, and is of no true genealogical relationship to you. So your step-son's children would also be of no true genealogical relationship to you either. However, they would commonly be called your step-grandchildren and you would be their step-grandfather or step-grandmother.


What would not be a step in the pre-writing process?

Which of the following would not be a step in the pre-writing process?


Would not be a step in the pre-writing process?

Which of the following would not be a step in the pre-writing process?


What is the first step in the composite risk management proess?

The first step would be to Plan for the process. The next step would be identifying the possible risks.


Is a marketing coordinator higher than a marketing executive?

A Marketing Coordinator is typically responsible for organizing and supporting various marketing activities, such as scheduling campaigns, coordinating with vendors, tracking performance, and ensuring everything runs smoothly. In contrast, a Marketing Executive often has a more strategic role, focusing on creating and executing marketing campaigns, analyzing results, and sometimes managing budgets or junior staff. While the titles can vary by region and company, the Marketing Executive is usually considered a step above the Coordinator, with greater responsibility in decision-making and campaign ownership. for more details: jumanajabbarcom