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
luda_lava [24]
3 years ago
12

Which of the following events triggers the subsequent steps of excitation-contraction coupling?

Biology
2 answers:
Mila [183]3 years ago
7 0

Answer:

d. propagation of an action potential along the sarcolemma and T tubules

Explanation:

Excitation-contraction coupling occurs in the body as an electrical signal to the muscles, which must capture this signal and perform muscle contraction.

After this signal is emitted, an action potential is generated that will act on the neuromuscular junction and spread quickly and coordinated by the sarcolemma, reaching the T tubules.

In the T tubules, receptors of dihydropyridine receptors are located, which will continue the process, until muscle contraction is performed.

mario62 [17]3 years ago
3 0

Excitation-contraction coupling refers to the series of events that begins with the excitation of the sarcolemma in response to stimulation by a neurotransmitter, and results in the release of calcium ions from the sarcoplasmic reticulum.

Hence, option D is the 1st process that starts the excitation-contraction coupling.

You might be interested in
Tom is having difficulty dorsiflexing and inverting his right foot. Which muscle is most likely involved in this problem
mariarad [96]

Answer:

It should be the tibialis anterior

Explanation:

I hope this helps!

4 0
3 years ago
The model below shows a human fetus at various stages of development. image Which choice BEST explains how the model illustrates
12345 [234]

Answer:

id say A:  

The model shows that the fetus becomes more complex during development. This is because mitosis allows the cells that make up the fetus to become specialized.

or D:

The model shows that the fetus gets larger as time goes on. This is because mitosis constantly increases the number of cells that make up the fetus.

Explanation:

4 0
2 years ago
Read 2 more answers
True or false? Phototropism only happens after plants move from darkness into the light.
enyata [817]

Answer:

phototropism only happens after plants move from darkness into the light (false)

4 0
2 years ago
Read 2 more answers
Need help with this please
wolverine [178]

Answer: movement is always voluntary

Explanation:

Muscles are contractile:

- Contractility is the ability of muscle cells to forcefully shorten. Think of having the ability to flex a muscle.

Muscles are excitable:

- Excitable tissue can conduct or transmit electrical impulses. Basically, it can react to stimulus, which may be delivered from a motor neuron or a hormone. For example, the hormone epinephrine helps muscles to produce force.

Muscles respond to stimulus:

- well since muscles are an excitable tissue, they can react to stimulus. (see answer above)

————————

Muscle movement is NOT always voluntary:

- Some muscle movement is voluntary, which means it is under conscious control. For example, a person decides to open a book and read. Other movements are involuntary, meaning they are not under conscious control, such as the contraction of your pupil in bright light, breathing, blinking, your heart beating, etc.

- Therefore, the correct answer is:

movement is always voluntary

hope this helps :)

3 0
1 year ago
Plant diversity creates a more nutritionally balanced diet for honey bees, especially in terms of pollen. What other benefit do
o-na [289]

Plant diversity creates a more nutritionally balanced diet for honey bees, especially in terms of pollen. What other benefit do honey bees gain through this diversity?
Blooms available more for the year
7 0
3 years ago
Other questions:
  • 1. Which type of reaction has water in its products?
    7·2 answers
  • Cobalamin, more commonly called vitamin b12,
    15·1 answer
  • A child with restricted tongue movement may have a surgery that involves the cutting of the ________.
    11·1 answer
  • Filip, aged 64, was recently diagnosed with Alzheimer's. His medical reports will most likely reveal a diminished production of
    11·1 answer
  • A force of a 19 newtons is applied on a cart of 2 kilograms and experiences of frictional force of 1.7 newtons. What is the acce
    15·2 answers
  • What process is similar to binary fission
    14·1 answer
  • Which statement describes a similarity between asexual reproduction and sexual reproduction?
    11·1 answer
  • does the presence of introns exons in eukaroytic cells provide more potentia diversity in gene products than is possible in pork
    8·1 answer
  • Name the group of algae most closely related to plants​
    12·1 answer
  • What happens if food items with excessive moisture are placed directly into hot shortening?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!