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4 years ago

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

1 answer:

6 0

For the purposes of this discussion, a neuromuscular junction is a synapse between a motor neuron and a skeletal muscle.
The correct order of a signal being transmitted across a neuromuscular junction is as follows:1. The brain must first send the signal to the muscle that it must move.2. The muscle must then be stimulated by a motor neuron. In other words, the stimulatory impulse must travel from the motor neuron to the muscle via the synapse.
If the command or signal is correctly sent and received via the neuromuscular junction, the muscle will move otherwise the muscle will not move as the brain signal indicated.

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If a flare occurs on the Sun 4 astronomical units away how much time would pass before a robot at that distance see the light fl

neonofarm [45]

The time that would elapse before a robot at a distance see the light flash is : 2000 secs

<h3 /><h3>Analysis of the solution </h3>

Given data :

Distance = 4 AU

Time for light to reach the earth = 8 mins 20 seconds

speed of light ( c ) = 299,792,458 m / s

To resolve this we will apply the equation below

Time = Distance / Speed ------ ( 1 )

where : Distance= 4 AU, speed = c

Therefore :

Time = 4 AU / c

AU / c = ( 8 * 60 + 20)

Hence the time that would elapse before a robot at a distance see the light flash will be

Time = 4 ( 8*60 + 20) = 2000 secs

Learn more about astronomical units : brainly.com/question/12904051

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6 0

2 years ago

In the diagram below you can see structures that work together to allow flowering plants to reproduce.

mart [117]

Complete question:

Several structures work together to allow flowering plants to reproduce. The diagram shows a typical flower.

Which answer correctly identifies the function of each structure or group of structures in the reproduction of the plant?

X- pollen production

Y- pollen transfer

Z- production of eggs

X- attraction of pollinators

Y- production of male sex cells

Z- egg production

X- production of eggs

Y- pollen transfer

Z- pollen production

X- production of eggs

Y- pollen production

Z- pollen transfer

Answer:

X- attraction of pollinators

Y- production of male sex cells

Z- egg production

Explanation:

Flowers are reproductive structures in charge of sexual reproduction through the production of seeds.

Z, Feminine reproductive structures:

The central structure is known as a carpel, also recognized as the pistil.
The base of the carpel forms the ovary, in which the eggs are produced and where the zygote develops.
The opposite extreme of the carpel is the stigma, in the superior part. The stigma is a sticky surface where the pollen grains get attached.
The ovary and the stigma are connected by a filament named style.

Y, Masculine reproductive structures:

The pollen grains, or male sex cells, are produced in the stamens.
The stamen has an anther where the pollen is produced, and a filament that provides support.

When mature, pollen grains are driven to the stigma of the same flower or other flowers of the species, where they stick. Once in the stigma, the pollen grains move to the ovary, where they meet the egg and fertilize. The zygote develops in the ovary.

X, External non-reproductive structures:

Flowers also have external structures known as petals and sepals. These structures are modified leaves whose principal function is to protect the flower´s fertile parts and attract pollinators. Petals characterize as having many different colors that make the flower more attractive to insects and some animals. When they visit a flower searching for their recompense, the flower´s pollen grains transfer to the insect´s body. The insect transports the pollen to the next visited flower, leaving it in the stigma of the second flower.

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3 years ago

What is inside the nucleus of a cell?

Lynna [10]

The nucleus is an organelle found in eukaryotic cells.Inside its fully enclosed nuclear membrane, it contains the majority of the cell's genetic material. This material is organized as DNA molecules, along with a variety of proteins, to form chromosomes.

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4 years ago

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Organisms that live in the tundra have developed unique adaptations that aid in their survival. Ursus maritimus has a variety of

taurus [48]

The organism that has all the adaptations listed above is C. polar bear.

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4 years ago

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Brenda is sniffing chemicals to identify them. How could she do this in a safer manner?

k0ka [10]

Answer:

Although other substances that are misused can be inhaled, the term inhalants refers to the various substances that people typically take only by inhaling. These substances include: solvents (liquids that become gas at room temperature)

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2 years ago