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jarptica [38.1K]
3 years ago
12

Roger is legally blind. His vision impairment is a complication of diabetes mellitus. Can you describe what structural changes i

n Roger's eyes have caused his blindness? As you were helping him cross the street, a fellow pedestrian suddenly stumbled into your path . Without any signal from you, Roger jumped back to avoid hitting the other person. If Roger is blind, how could he have reacted this way ?
Medicine
1 answer:
sammy [17]3 years ago
5 0

Answer:

He's experiencing diabetic retinopathy, the change is damage to the blood vessels in the tissue at the back of the eye (retina)

Explanation:

People who are blind or become blind typically have a more nuanced sense of hearing. especially when it comes to tracking moving items (think of crossing the road using sound alone)

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vredina [299]
The outer portion where blood is filtered
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3 years ago
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Each mature sperm cell contains ______ (number) chromosomes. Upon fertilization of the secondary oocyte. It completes meiosis II
butalik [34]

Answer:

The correct answer is - 23 (haploid).

Explanation:

Each mature sperm cell is a gamete that is produced by the meiosis type of cell division. Meiosis is the cell cycle that produces four cycle with the half chromosome in number than that of the parent cell. Humans have 46 chromosomes in but as explained the sperm or the gamete have only of that which is 23.

The same goes for ovum which is form by the meiosis second process from oocyte which is basically the egg cell. Both sperm and the ovum fuse to fertilize.

Thus, the correct answer is - 23 (Haploid)

5 0
3 years ago
Which area of research for helping SCI patients sounds the most promising to you?
frosja888 [35]

Answer:

sorry, alittle long but you need this

Explanation:

What are the symptoms?

The onset of ALS can be so subtle that the symptoms are overlooked but gradually these symptoms develop into more obvious weakness or atrophy.

Early symptoms include:

Muscle twitches in the arm, leg, shoulder, or tongue

Muscle cramps

Tight and stiff muscles (spasticity)

Muscle weakness affecting an arm, a leg, the neck, or diaphragm

Slurred and nasal speech

Difficulty chewing or swallowing

The first sign of ALS usually appears in the hand or arm and can show as difficulty with simple tasks such as buttoning a shirt, writing, or turning a key in a lock. In other cases, symptoms initially affect one leg. People experience awkwardness when walking or running, or they may trip or stumble more often. When symptoms begin in the arms or legs, it is referred to as “limb onset” ALS, and when individuals first notice speech or swallowing problems, it is termed “bulbar onset” ALS.

As the disease progresses, muscle weakness and atrophy spread to other parts of the body. Individuals may develop problems with moving, swallowing (called dysphagia), speaking or forming words (dysarthria), and breathing (dyspnea). Although the sequence of emerging symptoms and the rate of disease progression can vary from person to person, eventually individuals will not be able to stand or walk, get in or out of bed on their own, or use their hands and arms.

Individuals with ALS usually have difficulty swallowing and chewing food, which makes it hard to eat. They also burn calories at a faster rate than most people without ALS. Due to these factors, people with ALS tend to lose weight rapidly and can become malnourished.

Because people with ALS usually can perform higher mental processes such as reasoning, remembering, understanding, and problem solving, they are aware of their progressive loss of function and may become anxious and depressed. A small percentage of individuals may experience problems with language or decision-making, and there is growing evidence that some may even develop a form of dementia over time.

Individuals with ALS eventually lose the ability to breathe on their own and must depend on a ventilator. Affected individuals also face an increased risk of pneumonia during later stages of the disease. Besides muscle cramps that may cause discomfort, some individuals with ALS may develop painful neuropathy (nerve disease or damage).

7 0
2 years ago
Vent ur feelings here and get points lol
masya89 [10]

Very tired, and not wanting to get out of bed but also anxious about not getting stuff done. Wonderful combination.

7 0
3 years ago
Natalie consumes 2100 kcal of foods and beverages daily and expends a total of 1800 kcal each day. Her body is in a state of ___
lyudmila [28]

Since Lillian consumes 2100 kcal of foods and beverages and expends a total of 1800 kcal, then her body is in a state of positive energy balance.

<h3>What is a state of positive balance?</h3>

The expression 'state of positive energy balance' indicates a difference between the calories consumed and burned.

This state of positive energy balance is due to higher consumption of calories regarding calories burned each day.

In conclusion, since Lillian consumes 2100 kcal and expends a total of 1800 kcal, then her body is in a state of positive energy balance.

Learn more about positive energy balance here:

brainly.com/question/218287

#SPJ1

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2 years ago
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