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laila [671]
3 years ago
15

Which of the following is considered a supervisory position?

Medicine
1 answer:
devlian [24]3 years ago
6 0

Answer:

Battalion Chief.

Explanation:

Judging by the choices, I believe it to be Battalion Chief. 70% confidence.

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Explain how neurons communicate. Include a description of the action potential and how the action potential is converted into a
suter [353]

Answer:

Action potentials and chemical neurotransmitters.

Explanation:

Neurons communicate with each other via electrical events called ‘action potentials’ and chemical neurotransmitters.  At the junction between two neurons (synapse), an action potential causes neuron A to release a chemical neurotransmitter.  The neurotransmitter can either help (excite) or hinder (inhibit) neuron B from firing its own action potential.

In an intact brain, the balance of hundreds of excitatory and inhibitory inputs to a neuron determines whether an action potential will result.  Neurons are essentially electrical devices. There are many channels sitting in the cell membrane (the boundary between a cell’s inside and outside) that allow positive or negative ions to flow into and out of the cell.  Normally, the inside of the cell is more negative than the outside; neuroscientists say that the inside is around -70 mV with respect to the outside, or that the cell’s resting membrane potential is -70 mV.

This membrane potential isn’t static. It’s constantly going up and down, depending mostly on the inputs coming from the axons of other neurons. Some inputs make the neuron’s membrane potential become more positive (or less negative, e.g. from -70 mV to -65 mV), and others do the opposite.

These are respectively termed excitatory and inhibitory inputs, as they promote or inhibit the generation of action potentials (the reason some inputs are excitatory and others inhibitory is that different types of neuron release different neurotransmitters; the neurotransmitter used by a neuron determines its effect).

Action potentials are the fundamental units of communication between neurons and occur when the sum total of all of the excitatory and inhibitory inputs makes the neuron’s membrane potential reach around -50 mV (see diagram), a value called the action potential threshold.  Neuroscientists often refer to action potentials as ‘spikes’, or say a neuron has ‘fired a spike’ or ‘spiked’. The term is a reference to the shape of an action potential as recorded using sensitive electrical equipment.

Neurons talk to each other across synapses. When an action potential reaches the presynaptic terminal, it causes neurotransmitter to be released from the neuron into the synaptic cleft, a 20–40nm gap between the presynaptic axon terminal and the postsynaptic dendrite (often a spine).

After travelling across the synaptic cleft, the transmitter will attach to neurotransmitter receptors on the postsynaptic side, and depending on the neurotransmitter released (which is dependent on the type of neuron releasing it), particular positive (e.g. Na+, K+, Ca+) or negative ions (e.g. Cl-) will travel through channels that span the membrane.

Synapses can be thought of as converting an electrical signal (the action potential) into a chemical signal in the form of neurotransmitter release, and then, upon binding of the transmitter to the postsynaptic receptor, switching the signal back again into an electrical form, as charged ions flow into or out of the postsynaptic neuron.

4 0
3 years ago
jenna’s company allows occasional personal ise of work computers and phones as long as it isn’t excessive or inappropriate which
Nataly [62]
D because it is a personal health reason
8 0
3 years ago
Thyroxine, the hormone that is necessary for body cell metabolism, is
12345 [234]

B. The Thyroid Gland

6 0
3 years ago
Read 2 more answers
How do the chemicals in smoke relate to the development of atherosclerosis
3241004551 [841]

Answer:

Smoking makes fatty deposits more likely to form, and it accelerates the growth of plaque.

Explanation:

learned about it

7 0
2 years ago
phytochemicals may be guardians of our health, with the safety of consuming concentrated extracts that provide protective benefi
Anna71 [15]

The statement 'phytochemicals may be guardians of our health, with concentrated extracts that provide protective benefits superior to whole foods' is False.

<h3>What are phytochemicals?</h3>

Phytochemicals are specific chemical substances extracted form plants that may confer curative properties to different types of diseases and conditions.

In conclusion, the statement 'phytochemicals may be guardians of our health, with concentrated extracts that provide protective benefits superior to whole foods' is False.

Complete question:

Phytochemicals may be guardians of our health, with the safety of consuming concentrated extracts that provide protective benefits superior to whole foods. True or False

Learn more about phytochemicals here:

brainly.com/question/14834940

#SPJ1

5 0
1 year ago
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