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djyliett [7]
2 years ago
14

What's the name of the first woman who started nursing?

Medicine
2 answers:
sweet [91]2 years ago
5 0
Answer: Florence Nightingale!

Explanation: I hope that helps!! Have a great day :D
dlinn [17]2 years ago
4 0
Florence Nightingale
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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
A bone marrow biopsy is a painful procedure in which marrow is removed from bone and examined. A doctor who performs a bone marr
Lelechka [254]

Answer:

Is a bone marrow biopsy painful? Most people need only local anesthesia, as bone marrow aspiration, in particular, can cause brief, but sharp, pain. Individuals are fully awake during the procedure, but the aspiration and biopsy site will be numbed to reduce pain.

4 0
3 years ago
2. A patient admitted yesterday for injuries sustained while intoxicated believes the
Over [174]

Answer:

sedative, such as lorazepam (Ativan) or chlordiazepoxide (Librium).

Explanation:

Hope this helps!

5 0
3 years ago
A 13-year-old adolescent with hyperthyroidism who takes antithyroid medication has a sore throat and a fever. the parent calls t
Zigmanuir [339]

A 13-year-old adolescent with hyperthyroidism over time, excessive, untreated hyperthyroidism can result in an abnormal heartbeat, which in flip can cause troubles that include blood clots, heart failure, and stroke. over again, a remedy for hyperthyroidism is vital to preventing coronary heart troubles in humans with Graves' ailment, says Mikhael.

Hyperthyroidism (overactive thyroid) takes place while your thyroid gland produces an excessive amount of the hormone thyroxine. Hyperthyroidism can accelerate your body's metabolism, inflicting unintended weight reduction and a speedy or abnormal heartbeat. several remedies are to be had for hyperthyroidism.

Hyperthyroidism is treatable. some causes may work away without treatment. Hyperthyroidism due to Graves ailment usually receives worse through the years. It has many complications, some of which might be excessive and affect great of life.

if you have hyperthyroidism, you could find yourself feeling warm whilst you sleep or laid low with nighttime sweats. keeping your room cool will not simplest help your body loosen up and doze off, but, can also help prevent you from waking up covered in sweat.

Learn more about hyperthyroidism here:

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7 0
2 years ago
Five words from Winter Dreams. Look up their meanings if you haven’t already done so. Create a vocabulary table that includes th
bekas [8.4K]

Answer:

Word Meaning Other Parts of Speech

neurasthenic (adj) having neurasthenia; a condition of being exhausted or fatigued neurasthenic (n);

neurasthenia (n)

mince (v)

to take small steps

to finely cut or grind food

mincer (n);

mincing (adj)

precarious (adj) unsteady; dependent on circumstances precariously (adv)

attune (v) to be harmonious with, to make aware or alert attunement (n)

denouement (n) the result of a sequence of events; the final part --

Explanation:

Plato- Edmentum

7 0
3 years ago
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