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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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Answer:

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Explanation:

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Which of the following are IV fluids use for
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Answer:

are there options?

Explanation:

if not, here you go:

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i hope this helps! :)

3 0
3 years ago
Read 2 more answers
9. Which is true?
tresset_1 [31]
I’m going to go with both are true
8 0
3 years ago
A 19-year-old woman presents to the emergency department complaining of headache. The headaches are generalized and increasing i
Eva8 [605]

Answer: The next most appropriate step would be a LUMBAR PUNCTURE.

Explanation:

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A LUMBAR PUNCTURE is often adviced when the symptoms of a disease is related to the central nervous system. From the symptoms observed from the 19-year-old woman at the emergency department which includes:

--> generalized headache which is increasing in intensity,

--> blurred vision,

--> intermittent diplopia,

--> vague dizziness.

--> bilateral papilledema and

--> normal MRI of the brain.

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2 years ago
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