Answer:
The best answer to the question: Development of the testes in the embryo is due to:___, would be, C: Presence of a single Y chromosome.
Explanation:
The subject of sexual differentiation into male, or female, during the prenatal, and especially embryonic stage, is still a matter of study and research. Although many of the processes are widely accepted and understood, studies show that there may be other factors involved in sexual differentiation. However, what has been known so far is that in the embryonic stage, the presence of TDF (testis-determining factor) is crucial to this determination. TDF is a product of the presence of the Y chromosome in the gene known as SRY. It has been seen that when this protein product is not presence, there will be no growth of the necessary parts for male differentiation from a female.
Damage to the cerebellum will cause the individual to appear clumsy and uncoordinated.
<h3>What happens if the cerebellum is damaged?</h3>
The coordination of voluntary motor action, balance and equilibrium, and muscle tone are all functions of the cerebellum. It is situated toward the rear of the brain, just above the brain stem. Compared to the frontal and temporal lobes and the brain stem, it is relatively trauma-resistant.
Slow and uncoordinated motions are the outcome of cerebellar damage. When walking, people with cerebellar abnormalities frequently sway and stumble.
A cerebellar injury can cause the following symptoms:
- loss of coordination of motor movement (asynergia)
- inability to judge distance and when to stop (dysmetria)
- inability to perform rapid alternating movements (adiadochokinesia)
- movement tremors (intention tremor)
- staggering, wide-based walking (ataxic gait)
- tendency to fall
- weak muscles (hypotonia)
- slur (nystagmus)
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A urine concentration test measures the ability of the kidneys to conserve or excrete water.
A urine specific gravity test compares the density of urine to the density of water. This quick test can help determine how well your kidneys are diluting your urine. Urine that's too concentrated could mean that your kidneys aren't functioning properly or that you aren't drinking enough water.
Urine is concentrated in the final stages of its production: water is absorbed, in excess of solute, from the collecting ducts and into the vasculature of the medulla, thus increasing the osmolality of the collecting duct fluid and thus the osmolality of the urine that emerges from the collecting ducts.
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