Striped muscles, Biology

Assignment Help:

STRIPED MUSCLES -

  1. These muscles are found in the limbs, body walls, tongue, pharynx and beginning of oesophagus and are under the control of animal's will.
  2. These muscle fibres are normally attached to the skeleton.
  3. Each muscle fibre is an elongated cell surrounded externally by a delicate membrane, the sarcolemma.
  4. Its fibres are multinucleated or syncytial in nature.
  5. The cytoplasm of each fibre (sarcoplasm) has a large number of myofibrils which are tightly packed.
  6. Each myofibril shows dark and light bands of stripes alternating with. each other.
  7. The sarcoplasm contains a protein pigment myoglobin.

 

FUNCTIONS-

  1. These muscles are under the control of animal's will.
  2. Calcium is an essential element for the contraction of muscles.
  3. In the presence of calcium ions and energy from ATP, actin and myosin interact forming actomyosin which causes contraction of muscles.
  4. During muscle contraction conversion of pyruvic acid to lactic acid proceeds anaerobically.
  5. Lactic acid is transported by blood to liver where it is converted to glycogen.
  6. Chemical energy is changed into mechanical energy during muscle contraction.
  7. The contraction of muscles of shortest duration is seen in eye lids. Shivering in cold is a method for production of heat by muscle contraction.

Related Discussions:- Striped muscles

Functions of the pancreas, The pancreas performs digestive and hormonal fun...

The pancreas performs digestive and hormonal functions. The enzymes secreted by the exocrine tissue in the pancreas help in the break down of carbohydrates, fats, proteins, and

Zoonotic diseases-classification in terms of reservoir host, Classification...

Classification in terms of reservoir host 1.  Anthropozoonoses: Infections transmitted from lower vertebrate to man, e.g., rabies, plague, leptospirosis, etc. 2.   Zooanthro

State about dental implant reconstruction, State about Dental implant recon...

State about Dental implant reconstruction Dental implant reconstruction requires a thorough knowledge and understanding of the various strategically important anatomic landmark

Controlled percussive instruments, Percussive instruments -this method...

Percussive instruments -this method used a selected and controlled percussive removal force -Instruments delivers an impact either directly to a restorative or indirectly t

Use pcr to sequence the particular gene, You wish to use PCR to sequence a ...

You wish to use PCR to sequence a particular gene that you have isolated. The sequencing protocol suggests that you use 3.2pmole (pico moles) of your primer in a 2 micro liter volu

Explain the multiple organ dysfunction syndrome (mods), Explain the Multipl...

Explain the Multiple Organ Dysfunction Syndrome (MODS) Failure of essential organs is the most severe complication of sepsis and may result in death. The treatment of systemic

What are nymph and imago, What are nymph and imago? Nymphs are larvae o...

What are nymph and imago? Nymphs are larvae of hemimetabolic insects (like grasshoppers). They are very same to the adult insect although smaller. In holometabolic insects (lik

Height of plants - quantitative characters, Height of Plants - Quantitative...

Height of Plants - Quantitative Characters The height of a plant is a very good indicator of their general performance and therefore, can be employed as a criterion of the suc

Heart output, HEAR T OUTPUT The amount of blood pumped by heart per...

HEAR T OUTPUT The amount of blood pumped by heart per minute. Heart beat is 72. Pump out blood is 70 ml. This 72 × 70 = 5040 ml. ( 5 litres) blood is pumped in a minute.

Ant species in the two regions, Calculate a 95% confidence interval for the...

Calculate a 95% confidence interval for the difference among the average numbers of ant species in the two regions. Compare your results to SPSS output and interpret the confidence

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd