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
Art [367]
4 years ago
7

What causes skeletal muscle relaxation? A) nhibitory interneuron releases GABA onto muscle B) Descending neurons from brain dire

ctly inhibit muscle fibers C) Motor neuron does not fire action potentials E) Inhibitory motor neuron releases acetylcholine onto muscle
Biology
1 answer:
Molodets [167]4 years ago
5 0

Answer:

The correct option is C. Motor neuron does not fire action potentials

Explanation:

During contraction, the motor nerve passes down an action potential. A neuromuscular junction is formed by the motor neuron which stimulates the entry of calcium ions. The calcium ions bind to structures called as troponin which stimulates the binding of the filaments, actin and myosin. The filaments begin to contract by using ATP.

During relaxation, the action potential is stopped. Calcium is taken back into the sarcoplasmic reticulum. As a result, actin and myosin filaments do not link and hence, the contraction is stopped.

You might be interested in
Could someone help answer this question?
Goshia [24]
The one on the left is prokaryotic as it has no nucleus, the one on the right is eukaryotic as it contains a nucleus
8 0
3 years ago
Calcium blood levels are very tightly regulated with the aid of parathyroid hormone and vitamin D. The statements below represen
Bas_tet [7]

Answer:

D-less calcium

Explanation:

I helped someone

7 0
3 years ago
Read 2 more answers
Carbon cycle contains an important stage called Carbon fixation. This
grandymaker [24]

Answer: 4

Explanation:

Fungi(mushrooms) are heterotrophs and they cannot fix nitrogen from the atmosphere and they must obtain it from their environment. They are using complex organic compounds as a source of carbon.

Most plants can fix carbon which are 1. Grass 2. Maple trees 3. Algae and hat are why they are incorrect answers because from this question only 4. mushrooms can fix carbon.

5 0
3 years ago
What is used to transport proteins in a cell
Anna [14]

Answer:

The two carrier proteins on the left are using ATP to move sodium out of the cell against the concentration gradient. The proteins on the right are using secondary active transport to move potassium into the cell. Active transport is the movement of a substance across a membrane against its concentration gradient.

Explanation:

hope it helps? :))

6 0
3 years ago
Read 2 more answers
2 Points
katovenus [111]

Answer:

I believe the answer is A

Explanation:

The other reasons would not give enough reason for competition between populations.

5 0
4 years ago
Read 2 more answers
Other questions:
  • PLEASE I NEED ANSWERS
    8·2 answers
  • Transfusion of the wrong blood type can cause 26)
    14·1 answer
  • If the lac repressor were altered so it could not release lactose once lactose was bound to it then you would predict that:
    15·1 answer
  • First-generation antipsychotics influence ______ receptors, whereas second-generation antipsychotics influence ______ receptors.
    14·1 answer
  • Tony plans to use the lab instrument that is shown below in an experiment. which property of matter does the instrument measure?
    7·1 answer
  • Identify an environmental issue facing your community.
    13·1 answer
  • Match the scenario with the theory of motivation that is being described. Some will be used more than once.
    15·2 answers
  • Which is most likely a source of air pollution? <br> littering<br> CFCs<br> oil spill<br> runoff
    9·1 answer
  • A scientist observes the ocean tides moving large amounts of sand away from the beach. This is evidence for which type of natura
    6·2 answers
  • Which element has the most properties in common with calcium (Ca)?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!