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Ne4ueva [31]
2 years ago
11

How to assess sperm vitality?​

Medicine
1 answer:
FinnZ [79.3K]2 years ago
6 0
Evaluate at least 200 spermatozoa, tally the numbers of live and dead spermatozoa using a laboratory counter, and calculate the percentage of live spermatozoa (see Note 10). The lower reference limit for vitality assessed by eosin–nigrosin stain (membrane-intact spermatozoa) is 58% (5th percentile, 95% CI 55–63) (1).
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What is the difference between implied contract and an expressed contract
elixir [45]
The difference between implied and express contract is essentially as follows: An express contract is one in which the terms and conditions are spelled out in the contract, either verbally or in writing. ... An implied contract is one in which the terms and conditions are inferred by the actions of the parties involved.
8 0
2 years ago
Hormone that does not cause vasoconstriction?
oee [108]

Answer:

The correct answer is option C-ANP (Atrial natriuretic peptide).

Explanation:

Vasoconstriction is the narrowing of the blood vessels which can stop or block the blood flow.

Vasoconstriction reduces the urine formation during stress conditions through the action of hormones like ADH (anti-diuretic hormone), norepinephrine, epinephrine and angiotensin II produced via the sympathetic nervous system.

The atrial natriuretic hormone (ANP) is a cardiac hormone produced to lower the blood pressure or reduce blood plasma through vasodilation, increased vascular permeability and increase renal excretion.  

Thus, option C is the correct answer.

4 0
3 years ago
A 2ml sample was added to a 18 ml diluent in tube 1 which now has a Concentration of 300ng/ml. A 2ml of the sample was moved eac
puteri [66]

Answer:

288ng/ml

Explanation:

A serial dilution is any dilution where the concentration decreases by the same quantity in each successive step.  

  • Serial dilutions are multiplicative.

it to 3 rounds of dilutions for the first tube so 3x6=12 so the 300-12=288

7 0
2 years ago
A 2-year-old is diagnosed with atopic dermatitis (eczema).
Pani-rosa [81]

Answer:

The nurse has taught the parents the following instructions:

  • Apply emollient immediately after a bath .
  • Give tepid baths with mild soap .
  • Keep child's nails well-trimmed

Explanation:

Atopic dermatitis (eczema):

It is defined as a condition that results in the inflammation, redness and itchiness of the skin.  It is a chronic condition and usually children suffer from it. It is recommended to keep your skin moisturized by using the creams or ointments prescribed by the doctor.

In our case, the nurse has given the instruction to parents to apply the emollient immediately after the bath to avoid the dryness of skin otherwise it can cause the itchiness of the skin. Similarly mild soap also keep your skin soft and fresh as the ingredients like Aloe Vera, olive oil etc. The trimmed nails prevent you to make rashes on your skin because you can make new rashes on skin in the case of itching.

5 0
3 years ago
Read 2 more answers
Deprived of nutrition, osteocytes at the fracture site die.<br> a. True<br> b. False
raketka [301]

Answer:

True

Explanation:

Any living thing will die if it is lacking the proper nutrition.

4 0
2 years ago
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