Answer:
The skinfold method, the measurement of subcutaneous fat folds, is the most widely adopted field method for the assessment of body fat, especially in children.
It is based on the principle that fat is of a known density and by “summing” measurements of subcutaneous fat thickness across the body, total and regional fat can be estimated.
Skinfold thickness measurements are typically used to rank individuals in terms of relative total “fatness”, or to assess subcutaneous fat at various regions of the body.
Population specific equations are used to derive estimates of percent body fat.
In infancy, it might be the sole tool available for assessing body composition longitudinally as other methods may not be feasible, or may only be suitable for use at body sizes e.g. PEA POD, can only measure infants up to 10kg.
According to the gate control theory of pain, the structure that is the likely location of the gate is the substantia gelatinous.
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What is substantia gelatinous?</h3>
- A group of cells called the substance gelatinosa can be found in the spinal cord's gray matter (dorsal horns).
- It receives direct input from the dorsal (sensory) nerve roots, particularly those fibers from pain and thermoreceptors, and is present at all levels of the cord.
- The spinal cord has a system that permits pain signals to be amplified in the brain before being processed at the spinal cord itself, or attenuated there, in accordance with the Gate Control Theory of Pain.
- The "gate" is the device that either permits or forbids the transmission of pain signals.
- To feel intense pain if the gates are more open since many more pain signals will flow through to the brain.
- The likelihood that you will feel less discomfort increases as the gates are more tightly shut.
Learn more about spinal cord here:
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Answer:
Cells are small in order to get pass barriers. In particular, it has a small surface area to volume racio, which in turn allows it to carry more materials.
Explanation:
If cells are way to massive, it will require much more more energy to move the cell, the cell would not be able to remove all of its waste, and it would not get enough nutrients to survive
Earth is the largest terrestrial planet
The question is incomplete as it does not have the options which are:
A. endocytosis
B. active transport
C. facilitated diffusion
D. infusion
E. osmosis
Answer:
B. active transport
Explanation:
The neuron cell involves the influx and efflux of the sodium and potassium ions. These ions move through membrane proteins by facilitated diffusion and active transport.
The active transport allows the movement of ions against the concentration gradient that is even if the concentration of ions is higher.
In the given question, although the potassium ions are higher in the cytoplasm of the neuron, the potassium ions can enter the cell through active transport.
Thus, active transport is correct.