1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Crank
3 years ago
5

When an action potential arrives at the axon terminal of a motor neuron, which ion channels open?

Biology
1 answer:
HACTEHA [7]3 years ago
3 0

Answer:

Calcium voltage gated ion channels

Explanation:

There are two types of ion channels involved in the neuromuscular junction and end plate potentials: voltage-gated ion channel (responsive to changes in membrane voltage which cause the voltage gated ion channel to open) and ligand-gated ion channel (responsive to certain molecules such as neurotransmitters).

The resting membrane potential of a motor neuron goes from -70mV to -50 with a higher concentration of sodium outside and a higher concentration of potassium inside. <em>When an action potential propagates down a nerve and reaches the axon terminal of the motor neuron, the change in membrane voltage causes the calcium voltage gated ion channels to open allowing for an influx of calcium ions. </em>These calcium ions cause the acetylcholine vesicles  to release acetylcholine via exocytosis into the synaptic cleft.

I hope you find this information useful and interesting! Good luck!

You might be interested in
The ara operon is an inducible operon that controls the production of the sugar arabinose. When arabinose is present in a bacter
Talja [164]

Answer:

When AraC binds to arabinose to initiate the process of transcription, then AraC is acting as an Activator.

Explanation:

Transcription is a process that help to produce messenger RNA from the DNA that is present in the nuceloids of bacteria cells. The production of these mRNA however, depends on the intracellular condition of the bacteria, for example, if there is a need for the protein coded for by the segment or not. In the case of this bacterium, the AraC can act as a repressor only when there is no arabinose sugar in the cell. In the scenario above, AraC will act as an activator because of the presence of the sugar arabinose.

4 0
3 years ago
Read 2 more answers
How does a cell at the end of the first phase of the cell cycle differ from a cell at the end of the second phase
gtnhenbr [62]
I don't know maybe it is a white blood cell
6 0
3 years ago
How many adductor muscles exist within the body? List them here.
Vladimir79 [104]

Answer:

Explanation:

Adductor muscles are those muscles which pulls the body part away from the midline of the body. It draws the body part to the extremities. These are found in various parts of the body such as human thigh bones such as adductor longus, adductor mugnus and adductor brevis. These muscles in the thigh helps in providing the flexibility and rotation.

In the thumbs there is adductor pollicis. In the toes there is adductor hallucis.

7 0
3 years ago
Which structure would be unaffected by the peripheral nervous system?
Sphinxa [80]
For the answer to the question above, the peripheral nervous system governs <span>all structures outside the brain and spinal cord. Peripheral nerves branch from the spinal cord through the foramen transversarium of each vertebrae. I suppose the structure it would not affect is the brain itself since cranial nerves are responsible for brain activity. Also, the spinal cord would also be unaffected since it is just a cylindrical bundle of nerve fibers that allow the connection of the peripheral nerves to the brain.</span>
6 0
3 years ago
Chemical process of breaking large molecules in food into smaller molecules
Goryan [66]

Answer:

digestion

Explanation:

breaking down of food particles into smaller substance is known as digestion.

7 0
3 years ago
Other questions:
  • Comparing Viral Structures
    12·1 answer
  • Uniformitarianism posits that geological changes are consistent over time. How did Darwin incorporate these ideas into his own
    6·2 answers
  • What is being transferred by the wave above ?
    13·1 answer
  • Each one of the boxes on the Punnett square represents what probability of a offspring genotype?
    6·2 answers
  • Scientists create models to help make sense of the natural world. Models are powerful tools that help scientists predict how
    13·1 answer
  • Place the steps for providing first aid for bleeding in the correct order.
    8·1 answer
  • Describe the modifications that can be done on a polypeptide chain to make it a fully functional
    14·1 answer
  • 4. Lunar eclipses can only happen when Earth is in between the sun and
    7·2 answers
  • How are mutations and meiosis similar?
    12·2 answers
  • Planet A has a tilt a of five degrees. What seasonal changes would be expected on this planet?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!