What type of muscle tissue is found in the biceps and quadriceps? What type of muscle tissue is found in the heart?

There are different type of muscles in our body. Both biceps and quadriceps are voluntary muscles. However, biceps has a muscular fiber called red fibre although quadriceps has a white one.

Okay, that could seems cool. Nevertheless, how can we differentiate every type of muscular fibres? The answer of this question is molecular biology and histology.

In the animation above we can see a highly detailed scheme of the different types of voluntary muscles and their characteristics.

  • Type I muscles are those we use in quotidian, regular and repeated actions. Typically, we see a major quantity of these fibers in postural muscles such as quadriceps, rectus abdominis (six-pack), trapezius… Now, one can understand why type I muscles cannot be fatigued. Imagine that you are walking and, spontaneously, your right quadriceps stop working for a while; it cannot be possible!

  • Type IIB muscles , on the other hand, are those we use in a precise moment for a short time. Ocular muscles and hand ones are usually used to exemplify white muscles.

Everything I wrote before can be explained with molecular biology and histology and now we are going to see it:

  • Type I , slow twitch, or “red” muscle, is dense with capillaries and is rich in mitochondria and myoglobin, giving the muscle tissue its characteristic red colour (there is the reason we called it “red” muscle). Increased density in capillaries gives more oxygen and nutrients , giving a regular sustain for its activity. So that, this muscle can maintain the Krebs Cycle for longs periods of time. Slow twitch fibers contract for long periods of time but with little force because Krebs Cycle is really efficient but it costs so much time. Despite the fact that muscular force is low, it is sufficient to held the body in an upright (“orthostatic”) position.

  • Type IIb is anaerobic, glycolytic, “white” muscle that is least dense in mitochondria and myoglobin . In small animals (e.g., rodents) this is the major fast muscle type, explaining the pale color of their flesh. Because of decreased density of capillaries and mitochondria, these muscle fibers cannot use Krebs Cycle and start an anaerobic activity. Anaerobic activity is less efficient but you can obtain a great amount of energy in seconds.

Show more







Calculate Your Essay Price
(550 words)

Approximate price: $22

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
$26
The price is based on these factors:
Academic level
Number of pages
Urgency
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more

Order your essay today and save 10% with the coupon code: best10