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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Answer: The potential sources of vitamin B-12 are:
--> Hard boiled egg and
--> Yogurt
Explanation:
Vegetarians are individuals that involves in a dietary practice whereby they avoid some foods such as meat and by products of meat. This is practised by these individuals either due to the health benefits or for some religious beliefs.
There are different types of vegetarians, these include:
--> strict vegetarians
--> lacto vegetarians
--> Ovo vegetarians
--> Pesco vegetarians
--> partial vegetarians and
--> lacto Ovo vegetarians.
LACTO OVO VEGETARIANS are those vegetarians that exclude meat, poultry, and fish but take plant-based foods, dairy products, and eggs. They can obtain vitamin B-12 from hard boiled eggs and yogurts. This is so because, Vitamin B12 is naturally found only in animal foods such as meat, fish, seafood, poultry, eggs, milk, yogurt and cheese. Since the lacto ovo vegetarians do not feed on meat, fish or seafood, the potential sources of vitamin B-12 for a person who follows a lactoovovegetarian dietary pattern are hard boiled egg and dairy products such as yogurt
Answer:
The correct answer is D.
Explanation:
Sperm is produced in the seminiferous tubules of the testes, then it travels through the straight tubules and the rete testis and arrives at the <u>epididymis to mature and to be stored.</u>
When ejaculation occurs, sperm leaves the epididymis through the vas deferens and arrives to the ejaculatory duct. Then ejaculatory duct passes through the prostate to merge witch the urethra and finally sperm leaves the body.
Answer:
Option A, Release of chemical signals by keratinocytes that have been damaged by UV light will increase the production of melanin.
Explanation:
Negtaive feedback mechanism of homeostasis maintains the stability of any internal condition or function through lessening of output of a system or through slow down of a functional system.
Here in this case the keratinocytes function is reduced by damaging them on exposure to UV light which further triggers the release of chemicals that enhance the production of melanin.
Hence, option A is correct
