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3 years ago

The axons of certain neurons are covered by a layer of fatty tissue that helps speed neural transmission. This tissue is

Biology

1 answer:

jasenka [17]3 years ago

4 0

Answer:

Myelin sheath

Explanation:

Myelin sheath cover the axon of neurons and act as insulator for the faster transmission of signals.

Each axon is covered by multiple myelin sheaths and the gap between myelin sheath are known as Nodes of Ranvier.

In CNS myelin sheath is composed of glial cell called as oligodendrocytes and in PNS the myelin sheath is composed of Sachwann cells (glial cells).

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Albert, a student researcher, varies the amount of food given to rats in an experiment to measure the effect on their learning b

Fynjy0 [20]

Albert, a student researcher, varies the amount of food given to rats in an experiment to measure the effect on their learning behavior. In albert's study, the amount of food given is the independent variable.

An independent variable is under the control of the experimenter. Independent variable does not depend on the other variables involved in the experiment. Since the amount of food is varied, it is not depending on other variables like size of mice, weight, etc.

6 0

3 years ago

Which one of these is not a characteristic of a hypothesis?

weqwewe [10]

Answer:

Uhh-

Explanation:

Bruh there's no pic so ... I dunno lol. Just in case this helps you, hypothesis means an educated guess. There's different meanings, for science it's an idea. But mostly it means guessing.

I didn't help Ik XD

And

Sorry

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3 years ago

A crayfish’s swimmerets are used only for swimming.<br> a. True<br> b. False

marta [7]

Its false because lobsters have swimmerets as well and they dont use them only for swimming

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3 years ago

. How many malonyl groups are consumed in the cytoplasmic synthesis of palmitate? a. 4 b. 5 c. 6 d. 7 e. 8

konstantin123 [22]

C. i took the test and i got it right

6 0

2 years ago

missive segment is the axon hillock. The main activity that occurs at the transmissive segment is the release of neurotransmitte

Mumz [18]

Explanation:

The main activity that occurs at the transmissive segment is the release of neurotransmitter from synaptic vesicles . Prior to the arrival of the action potential, Ca2+ pumps embedded in the plasma membrane of a synaptic knob establish a calcium concentration gradient by pumping it out to the IF. Consequently, there is more calcium inside of the synaptic knob than outside it.

Further Explanation:

At synaptic junctions:

The action potential travels along the membrane until the synapse where it’s electrical depolarization leads to the opening of channels allowing Ca2+ to rush into the terminal due to higher extracellular concentrations
these flow through a presynaptic membrane until the concentration is built up, activating ion sensitive proteins attached to vesicles containing neurotransmitters
this leads to changes in the proteins leading to the fusion with the membrane of the presynaptic cell, so vesicles are open and neurotransmitter is released. The neurotransmitter diffuses across to chemical receptors on the presynaptic cell where they bind temporarily
This leads to activation of specific complexes, enabling the transmission of information. Thus, the chemical signal is transferred through this neuron as an electrical impulse

Learn more about the autonomic nervous system at brainly.com/question/10386413