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lilavasa [31]
3 years ago
5

In describing a contracted sarcomere vs. a relaxed sarcomere, the contracted lacks which structures/components, while they are p

resent in the relaxed sarcomere.
Where 1. A-band 2. I-band 3. Z discs 4. H-zone 5. M-line

A. 1 & 2
B. 3 & 4
C. 3, 4 & 5
D) 1 & 4
E) 2 & 4
Medicine
1 answer:
Aliun [14]3 years ago
5 0

Answer:

The correct answer will be option E- 2 & 4.

Explanation:

The sarcomere is a segment made up of thick and thin filaments between the two Z-lines or disc of a myofibril.

Sarcomere structurally can be divided into bands:  

  1. A-band- which is also known as the anisotropic filament is made up of thick filaments called myosin.
  2. H-zone- the zone in the A-band which appears lighter in color in the microscope  
  3. I-band- an isotropic band made of thin filament called actin.

Upon contraction of muscle, these filaments form an overlapped structure due to which I-band shortens along with H-zone of A- band. Due to the shortening of these bands, only A-band without H-zone and I-band appears between two A-lines. These bands upon relaxation again take their normal form.

Thus, option E- 2 & 4 is the correct answer.

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PolarNik [594]

Answer:

B vitamins are known for their ability to support healthy nervous system function. Vitamins B-1, B-6, and B-12 have been found to be especially beneficial for treating neuropathy. Vitamin B-1, also known as thiamine, helps to reduce pain and inflammation and vitamin B-6 preserves the covering on nerve endings.

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2 years ago
a nursing team doesn't have enough funding to properly implement evidence-based practice (ebp). what would be an appropriate way
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The appropriate way to address this barrier is to seek out funding sources through local organizations and specialty organizations.

The most frequent obstacles to implementation include the difficulties of changing the current practise paradigm, resistance from coworkers, and criticism from others.

The difficulty of changing practises to meet the environment is a contributing factor. Simply "plugging in" a new practise to another hospital or clinic frequently runs afoul of established procedures and is met with hostility from healthcare professionals.

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6 0
1 year ago
A 5.0 mL sample of agua oxinada was diluted in 30 mL distilled water and 30 mL diluted sulfuric acid. The resulting solution was
Savatey [412]

Answer:

14.8% of H2O2

Explanation:

Based on the redox reaction of H2O2/MnO4- is:

2MnO4- + 5H2O2 + 6H+ ⇄ 2Mn2+ + 5O2 + 8H2O

<em>2 moles of KMnO4 react with 5 moles of H2O2</em>

<em />

To solve this question we need to find the moles of KMnO4 until reach the endpoint. Using the balanced reaction, we can find the moles of H2O2 that must be converted to grams using its molar mass -Molar mass H2O2: 34.015g/mol-:

<em>Moles KMnO4:</em>

0.0297L * (1.4686eq/L) = 0.04362eq MnO4- * (1mol / 5eq) = 0.008723 moles MnO4-

<em>Moles H2O2:</em>

0.008723 moles MnO4- * (5mol H2O2 / 2mol MnO4-) = 0.02181 moles H2O2

<em>Mass H2O2:</em>

0.02181 moles H2O2 * (34.015g/mol) = 0.7418g H2O2

<em>%:</em>

0.7418g H2O2 / 5.0mL * 100

<h3>14.8% of H2O2</h3>
4 0
3 years ago
1. John, age 24, is involved in an automobile accident. Ken, a paramedic, arrives on the scene and
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Answer: A severe loss of blood may lead to Anemia

Explanation:

5 0
2 years ago
Nuts are an example of a complete protein Group of answer choices True False
maks197457 [2]

Answer:

Explanation:

While most beans and nuts aren't complete proteins, they can be complemented by other nutritious foods such as grains, seeds or nuts to create a complete protein—at the same meal or throughout the day.

6 0
3 years ago
Read 2 more answers
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