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vaieri [72.5K]
1 year ago
9

During a workout, you notice that a client displays a sudden lack of coordination and balance and, when asked, reports trouble s

eeing. What is the most likely cause of these symptoms?
Health
1 answer:
Cerrena [4.2K]1 year ago
7 0

<u>Stroke</u> is the most likely cause of these symptoms.

<h3>What is stroke?</h3>

When a portion of the brain's blood supply is cut off or diminished, brain tissue cannot receive oxygen and nutrients, which results in an ischemic stroke. In minutes, brain cells start to degenerate.

A stroke is a medical emergency, thus quick care is crucial. Early intervention can lessen problems and brain damage.

The good news is that stroke-related deaths among Americans have decreased significantly over time. Stroke impairment can also be avoided with the use of effective treatments.

Stroke symptoms and signs include:

  • difficulty communicating and hearing what others are saying. You can sound confused, slur words, or have trouble following conversations.
  • Face, arm, or leg numbness or paralysis You could suddenly experience facial, arm, or leg paralysis, weakness, or numbness.
  • vision issues in one or both eyes. One or both of your eyes may suddenly become blurry or black, or you may experience double vision.
  • Headache. A sudden, severe headache that may be followed by nausea, vertigo, or altered level of awareness could be a sign that you are experiencing a stroke.
  • difficulty walking You might trip or get unbalanced. A sudden loss of balance or dizziness are some potential symptoms.

Learn more about a stroke

brainly.com/question/1115034

#SPJ4

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All cells share four common components: (1) a plasma membrane, an outer covering that separates the cell’s interior from its surrounding environment; (2) cytoplasm, consisting of a jelly-like region within the cell in which other cellular components are found; (3) DNA, the genetic material of the cell; and (4) ribosomes, particles that synthesize proteins. However, prokaryotes differ from eukaryotic cells in several ways.



Figure 1. This figure shows the generalized structure of a prokaryotic cell.

A prokaryotic cell is a simple, single-celled (unicellular) organism that lacks a nucleus, or any other membrane-bound organelle. We will shortly come to see that this is significantly different in eukaryotes. Prokaryotic DNA is found in the central part of the cell: a darkened region called the nucleoid (Figure 1).

Unlike Archaea and eukaryotes, bacteria have a cell wall made of peptidoglycan, comprised of sugars and amino acids, and many have a polysaccharide capsule (Figure 1). The cell wall acts as an extra layer of protection, helps the cell maintain its shape, and prevents dehydration. The capsule enables the cell to attach to surfaces in its environment. Some prokaryotes have flagella, pili, or fimbriae. Flagella are used for locomotion, while most pili are used to exchange genetic material during a type of reproduction called conjugation.

Eukaryotic Cells

In nature, the relationship between form and function is apparent at all levels, including the level of the cell, and this will become clear as we explore eukaryotic cells. The principle “form follows function” is found in many contexts. It means that, in general, one can deduce the function of a structure by looking at its form, because the two are matched. For example, birds and fish have streamlined bodies that allow them to move quickly through the medium in which they live, be it air or water.

A eukaryotic cell is a cell that has a membrane-bound nucleus and other membrane-bound compartments or sacs, called organelles, which have specialized functions. The word eukaryotic means “true kernel” or “true nucleus,” alluding to the presence of the membrane-bound nucleus in these cells. The word “organelle” means “little organ,” and, as we learned earlier, organelles have specialized cellular functions, just as the organs of your body have specialized functions.

Cell Size

At 0.1–5.0 µm in diameter, prokaryotic cells are significantly smaller than eukaryotic cells, which have diameters ranging from 10–100 µm (Figure 2). The small size of prokaryotes allows ions and organic molecules that enter them to quickly spread to other parts of the cell. Similarly, any wastes produced within a prokaryotic cell can quickly move out. However, larger eukaryotic cells have evolved different structural adaptations to enhance cellular transport. Indeed, the large size of these cells would not be possible without these adaptations. In general, cell size is limited because volume increases much more quickly than does cell surface area. As a cell becomes larger, it becomes more and more difficult for the cell to acquire sufficient materials to support the processes inside the cell, because the relative size of the surface area across which materials must be transported declines.



Figure 2. This figure shows the relative sizes of different kinds of cells and cellular components. An adult human is shown for comparison.

IN SUMMARY: COMPARING PROKARYOTIC AND EUKARYOTIC CELLS

Prokaryotes are single-celled organisms of the domains Bacteria and Archaea. All prokaryotes have plasma membranes, cytoplasm, ribosomes, a cell wall, DNA, and lack membrane-bound organelles. Many also have polysaccharide capsules. Prokaryotic cells range in diameter from 0.1–5.0 µm.

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