Answer:
<em>The correct option is d) once the electrical impulse reaches a certain level of intensity (its threshold), it fires and moves all the way down the axon without losing any intensity.</em>
Explanation:
In the field of biology, the all-or-nothing law can be described as a principle which focuses on the strength with which a nerve or muscle fibre responds to a particular stimulus, this strength being independent of the strength of the stimulus. The functioning of the impulse is just like the trigger of a gun. The more the force of a stimulus, the more will be the intensity of the nerve impulse.
Answer:
A. long (front-to-back), vertically low skull shape
Explanation:
- The Neanderthals had a different body structure than doe the present modern humans have. The had a more robust well-built structure and had a distinctive morphological feature.
- Research suggests they were stronger than modern man thought they were slightly shorter than modern humans. They had a noticeable face, a chin, and a forehead slope.
Explanation:
Agricultural productivity is dependent on Co2, Temperature, Solar Radiation, Precipitation, Soil Moisture and Wind Direction. Changes in any or all of these elements has a direct impact on the crop production
Descending limb of loop of Henle
It helps to maintain the concentration of urine. It is highly permeable to water thus water is readily reabsorbed from the descending limb by osmosis. It is impermeable to sodium and chloride ions.
<h3>What is a Tubule system ?</h3>
The transverse tubular system is a network of interconnecting rings, each of which surrounds a myofibril
- The nephron uses four mechanisms to convert blood into urine: filtration, reabsorption, secretion, and excretion. These apply to numerous substances
- The distal convoluted tubule (DCT) and collecting duct (CD) are the final two segments of the kidney nephron. They have an important role in the absorption of many ions, and in water reabsorption.
Learn more about Tubule system here:
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