What is the correct order of a signal being transmitted across a neuromuscular junction?

Biology

1 answer:

Katen [24]3 years ago

6 0

Answer:The correct order is:

Ion channels - synaptic vesicle - neurotransmitter - end plate potential.

Explanation: A neuromuscular junction is the point where a motor neuron meets with a skeletal muscle fiber which it innervates.

It is the site where a chemical interaction or communication between a motor neuron and a muscle cell occurs. For transmission of impulses to occur between a neuron and a muscle cell, an action potential from the motor neuron travels along the axon of the neuron to the presynaptic terminal of the neuron where it activates voltage gated calcium ion channels which causes the influx of calcium ions into the intracellular space of the neuron. The calcium ions bind to the sensor proteins that are located on the synaptic vesicles and trigger the release of the neurotransmitter into the synaptic cleft. The neurotransmitter moves from the synaptic cleft and binds to its receptors on the postsynaptic membrane of the muscle cell. The binding of the neurotransmitter to its receptors creates end plate potential which causes the skeletal muscle fibers to depolarise.

You might be interested in

igh levels of cortisol would normally provide negative feedback to the _______. High levels of cortisol would normally provide n

alexandr1967 [171]

High levels of cortisol would normally provide negative feedback to the D)the anterior pituitary and the hypothalamus.

ACTH secretion stimulates the discharge of glucocorticoids (cortisol), mineralocorticoids (aldosterone), and androgen from the adrenal cortex.

Corticotropin-liberating hormone (CRH) is launched from the hypothalamus, which stimulates the anterior pituitary to release adrenocorticotropic hormone (ACTH). ACTH then acts on its target organ, the adrenal cortex.

Cortisol increases blood sugar by way of releasing stored glucose, at the same time as insulin lowers blood sugar. Having chronically high cortisol stages can result in continual high blood sugar (hyperglycemia). this can purpose type 2 diabetes.

Learn more about the hypothalamus here brainly.com/question/1022285

#SPJ4

6 0

2 years ago

Nancy is reading the doctor's orders for Ms. Brighton, a 72-year-old with COPD, congestive heart failure, Type 2 diabetes, high

MatroZZZ [7]

Answer:

Question the order and explain the potential problems

Explanation:

It should be understood that COPD means Chronic Obstructive Pulmonary Disease, which can be described or known to be a common disease of the lung. And it always make it hard to breath.

Now, what Nancy needed to do in such situation is to ask question as to why the drug or medication should be taken by Ms Brighton. At the course of doing this, Nancy should let them know the potential problem the patient will have if she took the medication.

In this case, Nancy should make sure that necessary correction was made.

3 0

3 years ago

What is a blue moon

brilliants [131]

It is another type of full moon, happens in different sub divisions of a year. It gets it names from its appearance, as a blue lighting color.

3 0

3 years ago

Differences between caridac, smooth and skeletal muscle fibers:

azamat

Tissue only found in the heart creates smooth muscle moves bowels and vessels skeletal muscle fibers striated muscle tissue control of somatic nervous system

5 0

3 years ago

The ABO blood groups in humans are expressed as the I A , I B , and i alleles. The I A allele encodes the A blood group antigen,

Fynjy0 [20]

Answer:

d. multiple alleles and codominance

Explanation:

ABO blood group is controlled by three alleles instead of the usual two. Hence, it is an example of multiple alleles. These three alleles are IA, IB and i. IAIA genotype leads to production of A antigen hence A blood group. IBIB genotype leads to production of B antigen hence B blood group. When they are present together (IAIB) both A and B antigens are produced resulting in AB blood group. Hence ABO blood group is also an example of codominance.

Both IA and IB are dominant over the i allele. So IAi and IBi will produce A and B blood group respectively. ii genotype leads to O genotype.

8 0

3 years ago