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Which of the following is not true regarding cryptorchid testis?

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שאלה #148541

done		a very low percentage of animals with a cryptorchid testis develop testicular cancer
		can be unilateral or bilateral
		surgical correction is possible
		is usually a hereditary condition
		can be a result of an inguinal hernia

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מיין לפי דירוג חדש ישן

The cause of dystocia can be:

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שאלה #148542

done		improper (not proper) fetal presentation
		explusion of placenta
		proper fetal presentation
		parturition ('giving birth') during daylight
		quiet environment

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מיין לפי דירוג חדש ישן

Which of the following is an advantage of artificial insemination:

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שאלה #148546

done		contributes to disease prevention
		requires a professional inseminator (person performing the insemination)
		enables fast spread of semen from a male with an unfavorable genetics
		requires complicated technology for chilling or freezing semen
		requires good and thorough estrus detection

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מיין לפי דירוג חדש ישן

What are the advantages of flow cytometry for classification and selection pf male or female sperm:

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שאלה #148616

done		the only method that works
		the number of sperms that are obtained from the procedure
		better fertility of the sperms that are obtained from the procedure
		procedure cost
		availability of the equipment

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מיין לפי דירוג חדש ישן

Lactation is an example of:

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שאלה #148617

done		positive hormonal feedback
		negative hormonal feedback
		estrogen secreting system
		progesterone secreting system
		testosterone secreting system

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מיין לפי דירוג חדש ישן

Of the prostaglandins PGF2a is not:

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שאלה #148618

done		expands blood vessels
		contracts blood vessels
		destroys the corpus luteum
		assists with sperm motility
		assists with parturition

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מיין לפי דירוג חדש ישן

which of the following exhibits spontaneous ovulation:

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שאלה #148619

done		mare (female horse)
		queen (female cat)
		alpaca
		ferret
		rabbit

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מיין לפי דירוג חדש ישן

What is the length of the estrus cycle in a cow?

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שאלה #148620

done		21 days
		17 days
		4 days
		12 days
		6 months

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מיין לפי דירוג חדש ישן

One of the most important factors that contribute to the fact that in the male conceptus a surge center is not formed is:

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שאלה #148621

done		the enzyme aromatase
		estradiol (E2)
		a Feto-Protein
		the cerebellum
		progesterone

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מיין לפי דירוג חדש ישן

The definition of puberty in the male is not:

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שאלה #148622

mood		the age in which the semen contains a maximal number of sperms
		the age in which the first ejaculation occurs
		the age in which sperm is first seen in the ejaculate
		the age in which sperm is first seen in the urine
		the age in which male characteristic behaviores are first seen

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