Which type of muscle is used primarily for voluntary actions?

WILL IVE BRAIN?? Why might humans not have widespread regeneration abilities?

Murrr4er [49]

Answer: because mammals have more complex biological structures; limb regeneration would require sophisticated controls to ensure that limbs and organs don’t grow out of control.

Explanation:

8 0

3 years ago

As successional changes occur in an ecosystem, new species take advantage of new conditions. where do these new species come fro

Bumek [7]

The new species come from old ancestors of the animals that were there, over time they slowly evolved, and they adapted to that new environment.

6 0

3 years ago

What is the axial skeleton?

MariettaO [177]

Answer:

Bones that protect the internal organs

Explanation:

Your axial skeleton protects and cushions your brain, spinal cord and organs! <3

8 0

2 years ago

What are the three elements of an editorial?

Vika [28.1K]

Answer: the introduction, the body, and the conclusion

Explanation:

An editorial piece is meant to show the opinion of the newspaper on a certain issue. It is usually written by the senior editor or the publisher and is the first article on the written piece.

Editorials follow a common writing structure that begins with an introduction where the issue is introduced. Discussions are then made in the body and the conclusion will then round up the piece.

6 0

3 years ago

Pain signals often have two components: an acute sensation of "first pain" which is felt almost immediately after an injury, and

o-na [289]

Answer:

This suggests that neurons that send the signals that we perceive as first pain Myelinated Tpye A-delta___, and neurons that send the signals that we perceive as second pain Unmyelinated-Type C.___.

Explanation:

Physiologically, primary afferent neurons that innervated the the touch, pain, temperature,and pressure receptors in the effectors to input sensory signals to the spinal cord and the brain are categorized based on their diameter, sizes, and nature of myelination. Based on this;

A-alpha has the largest diameter, myelinated, and sensitive to sensation from the muscle cells

A-beta are next in diameter, myelinated and sensitive to sensation of touch.

A-delta followed in diameter, and size. They are mylinated, and sensitive to pain and temperature.

C-fibres are least in diameter, they are unmyelinated, but sensitive to pain, touch and temperature.

Therefore, if the speed of conduction,of action potential in a neuron depends on the diameter(thickness) and myelination of the axon(saltatory conduction) :

''then, acute sensation/ first pain should be transmitted by the A-delta fibre. While the the slower/second pain should be transmitted by the slower unmyelinated - C-fibres''.

5 0

3 years ago