1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Leto [7]
3 years ago
5

Plasma membrane of a skeletal muscle fiber - _________Extension of the sarcolemma that dives into the muscle fiber and surrounds

- _________Modified smooth endoplasmic reticulum that wraps around the myofibrils and stores calcium ions - _________Point at which the sarcoplasmic reticulum swells where it meets a T-tubule - _________Rodlike bundle of contractile filaments found in muscle fibers - _________Long, filamentous proteins that constitute myofibrils - _________Myofilament composed of the contractile protein myosin - _________Myofilament composed of contractile protein actin and the regulatory proteins troponin and tropomyosin - ______
Biology
1 answer:
Tpy6a [65]3 years ago
6 0

Answer:

1. Sarcolemma

2. T-Tubule

3. Sarcoplasmic reticulum

4. Terminal Cisternae

5. Myofibrils

6. Myofilament

7.Thick filament

8. Thin filament

Explanation:

These are all parts of the skeletal muscle and they are all involved in the contraction of your muslces.

The sacrolemma is also known as the myolemma. It is a specialized plasma membrane of the skeletal muscle cell. It is an excitable membrane that shares similarities to the cell membrane of a neuron cell.

The T-tubule extends from the sarcolemma to the sarcoplasmic reticulum (SR). This is the smooth endoplasmic reticulum of the muscle cell. When the sarcolemma gets excited, it triggers the SR to release the calcium ions stored in it. The release of Calcium ions triggers the contraction of myofilaments.

There are two types of myofilaments, the thick myofilament and the thin myofilament. These myofilaments contain contractile proteins, actin and myosin. Thick myofilaments contain myosin where one thick myofilament contains 300 myosin molecules. Thin myofilaments contain contractile and regulatory proteins. These myofilamens make up myofibrils.  

You might be interested in
5.How does temperature change affect surface tension?
dybincka [34]
Surface tension decreases when temperature increases because cohesive forces decrease with an increase of molecular thermal activity
3 0
3 years ago
Read 2 more answers
What is the difference between molecules and ions and atom?​
ahrayia [7]
This might help here you go

8 0
2 years ago
Has anyone on here ever taken Environmental Science on grad point? Can you help with the final review :)
frez [133]
I am taking it right now
5 0
2 years ago
Functions of courtship behaviour​
VashaNatasha [74]

Answer:

to ensure that the two individuals are of the same species

Explanation:

It also involves stereotyped behaviours. Courtship behaviour informs a potential mate that the intention is breeding and not aggression.

Please give brainliest

4 0
2 years ago
Read 2 more answers
Can evolution by natural selection be witnessed and quantified?
madreJ [45]
Yes it can be quantified
7 0
3 years ago
Read 2 more answers
Other questions:
  • Which types of mutation are possible thanks to the redundant nature of the genetic code?
    8·1 answer
  • What would happen to a flower if it had dark petals or no petals at all?
    12·1 answer
  • When patients who are receiving glucocorticoid therapy (for example, with prednisone) need to stop taking it, the doctor will pr
    11·1 answer
  • Someone please answer I really need help!
    6·2 answers
  • Examples that show between species DNA show , and give evidence of evolution.
    7·2 answers
  • What are the main processes involved in making proteins?
    14·1 answer
  • How might water loss relate to the opening and closing of stomata? How does this relate to photosynthesis?
    7·1 answer
  • Please help! Just one question! :)
    10·1 answer
  • Which of these is the best definition of sustainable development?
    7·2 answers
  • Birds living on different parts of a
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!