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Both types of signaling can occur over long distances: neurons can send action potentials along
very long axons (from the spinal cord to the fingers, for example), and hormones are passed
through the bloodstream throughout the organism. Neurons secrete large amounts of
neurotransmitters into a small, well-defined space at the synapse, yielding a high local
concentration. Neurotransmitter receptors, theref
ore, need to bind to neurotransmitters with only
low affinity (high
K
d). By contrast, hormones are diluted extensively in the bloodstream, where they
circulate at minuscule concentrations; hormone receptors, therefore, generally bind their hormones
with extremely high affinity (low
K
d). Neuronal signaling is very fast, limited only by the speed of
propagation of the action potential and the workings of the synapse. In addition to speed, nerves
communicate directly with one or a few cells. Hormonal signaling is slower, limited by blood flow
and diffusion over relatively large distances, but it communicates at the same time with all the
diverse and widely dispersed target cells in the body.
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List 3 ways that hormone secretions are regulated?
There are three general mechanisms that govern the secretion or release of a hormone; humoral, hormonal, and neural. Humoral release is governed by the presence of certain ions or nutrients in the blood. For example, the amount of glucose in your blood determines whether insulin or glucagon is secreted. Hormonal release is stimulated by the presence of other hormones. An example would be thyroid stimulating hormone secreted by the anterior pituitary stimulates the production/secretion of thyroid hormone. Finally, neural release is governed by nervous system controls. The classic example of neural release is neurons from your sympathetic (fight-or-flight) nervous system determine the release of adrenaline (epinephrine) from the adrenal glands.
What is the job of neuron?
The function of a neuron is to transmit a signal at a very fast rate. The function of the entire nervous system is to provide a system that allows for signals to be transmitted quickly from one specific location to another locations.
Why would a lack of neurotransmitters change the function of the brain?
signals travel from neuron to neuron through neurotranmitters
What are two types of neural network in the visual system?
outline two types bof neural network that you might find in the visual system and state the advantage of each. I would appreciate if s.o. might help me with this question. Thanks
Why would you use an irrigation staining technique opposed to direct application of iodine?
An irrigation staining technique is used to increase the contrast of soft tissue structures on an imaging study. This is done by injecting a contrast agent into the tissue. The contrast agent is typically iodine-based. Iodine-based contrast agents can be irritating to the tissue and can cause inflammation. This can lead to increased pain and discomfort for the patient. Additionally, iodine-based contrast agents can cause allergic reactions in some patients. An irrigation staining technique can help to minimize these side effects by diluting the contrast agent and evenly distributing it throughout the tissue. This can help to improve the comfort of the patient and increase the safety of the procedure.
Can people live without electricity?
No, neural signals in the body are electrical in nature. Without electricity your heart and other muscles would not function.
What is the process called when the ear registers sound waves that are transformed into electrical signals that becomes neural impulses?
We would call that the process of "hearing".
How would you know if you are having hormonal changes?
It depends on which type of hormonal change
List 3 ways that hormone secretions are regulated?
There are three general mechanisms that govern the secretion or release of a hormone; humoral, hormonal, and neural. Humoral release is governed by the presence of certain ions or nutrients in the blood. For example, the amount of glucose in your blood determines whether insulin or glucagon is secreted. Hormonal release is stimulated by the presence of other hormones. An example would be thyroid stimulating hormone secreted by the anterior pituitary stimulates the production/secretion of thyroid hormone. Finally, neural release is governed by nervous system controls. The classic example of neural release is neurons from your sympathetic (fight-or-flight) nervous system determine the release of adrenaline (epinephrine) from the adrenal glands.
What week of gestation does the neural tube close?
The neural tube closes around the 28th day of gestation, so that would be at the end of the fourth week.
Are the moods of the speakers in Whitman's To a Stranger and Dickinson's If I knew you were coming in the fall the same or different and would you compare or contrast them in a compareand contrast?
The moods of the speakers are different, and you would contrast them in a compare-and-contrast.
How would you compare and contrast real number system?
The answer depends on what you wish to compare and contrast it with.
Does the far side of the Moon receive signals from a greater area of the sky than the near side?
The far side of the moon would receive the same signals with the exception of Earth originating signals. The radio equipment would not be subject to interference from the Earth signals on the far side so space originating signals would be easier to study.
Are the moods of the speakers in Whitman's To a Stranger and Dickinson's If I knew you were coming in the fall the same or different and would you compare or contrast them in a compare-and-contraced?
The moods of the speakers are different, and you would contrast them in a compare-and-contrast.
What type of visual aid would you use to compare and contrast information?
You would use a pie chart to compare and contrast information.
What is the job of neuron?
The function of a neuron is to transmit a signal at a very fast rate. The function of the entire nervous system is to provide a system that allows for signals to be transmitted quickly from one specific location to another locations.
How would depressants affect the resting membrane potential?
the conduction of neural information to the muscle fiber
