Biology, 19.07.2019 08:40 kalcius9698

Which would require more neural signals being sent by the nervous system to the muscles of your arm?

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Answer from: brookespradley1

Nervous system:

The nervous system is comprised of two main systems, which are the Central nervous system,CNS(Brain and spinal cord) and the peripheral nervous system,(PNS).

Basic Unit:

The basic structural and functional unit of the nervous system is the neuron.

Explanation:

Frequency of the stimulus and number of receptors in the area:

As the reaction shown by the nervous system towards the change will be all based upon the number of receptors which receives the stimulus and also depends upon the frequency of the change occurred.

Cutaneous receptors:

Inside the human body there are number of pain receptors, along with which a limited number of neurons are there to receive the stimulus relating pressure,cold and warmth. As there are sensory neurons found inside the epidermis layer of the skin which are refereed to as the cutaneous receptors. They receive different stimuli, which are basically the change occurred inside or outside the organisms body.

Now, these receptors will detect any change and will direct the muscle spindle fiber either to contract or relax according to the frequency of the stimulus.

Answer from: Quest

Hunting in the darksome fish rely on senses beyond sight. in the darkness of the marianas trench, a fish called the rattail has an extremely sensitive sense of smell. the fish uses scent, rather than sight, to steer toward food. once it's near food, the rattail uses a special organ on the bottom of its chin to guide itself by feel.marine snowone staple of the deep sea diet is "marine snow," flakes of organic, edible substances that sink down from the upper ocean. animals at the ocean's bottom find sustenance in everything from the bodies of dead creatures to fecal matter. marine snow is diverse enough to support numerous species. for instance, several species of snails and worms feed exclusively on deceased whales.microorganismsthe deep sea is an intricate ecosystem, and even the ocean floor itself plays a part. hydrothermal vents are cracks in the sea floor where erupting magma mixes with ocean water to produce plumes of hot, sulfur-rich chemicals. some microbes can use these chemicals for energy, sustaining their existence and that of the animals who depend on their roles in the deep sea food chain.

Answer from: Quest

answer-

the statement that f(x) = |x+a| + b has exactly one x-intercept is sometimes correct.

solution-

it solely depends on b, whether the function will have one or two or zero x intercept.

this plot of the given function, f(x) = |x+a| + b will be the basic absolute value graph i.e v shape, with vertex translated to (-a, b), instead of origin.

1- if b is zero, the graph will have exactly one x-intercept, at x= -a

2- if b is positive, the whole graph will be above the x-axis, hence it will have no x-intercepts.

3- if b is negative, the graph will be below the x-axis, hence it will have two x-intercepts.

∴ the statement is sometimes true.

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