A)At which stage of labor is the \"afterbirth\"expelled? A) dystocia B) placenta

Question

A)At which stage of labor is the "afterbirth"expelled? A) dystocia B) placental C) expulsion D) full dilation 35) When filtrate enters the collecting duct it is hypotonic to the surrounding fluid A) True B) False 36) A ruptured follicle is transformed into the A) antrum B) ovarian follicle C) corpus luteum D) germinal epithelium 37) The cells that produce testosterone in the testis are called A) spermatocytes B) spermatogonia C) sustentacular cells D) interstitial endocrine cells 38) The ability of a specific tissue or organ to respond to the presence of a hormone is dependent on A) the presence of the appropriate receptors on the cells of the target tissue or organ B) the membrane potential of the cells of the target organ C) the location of the tissue or organ with respect to the circulatory path D) nothing-all hormones of the human body are able to stimulate any and all cell types because hormones are powerful and nonspecific 39) A human egg or sperm contains 23 pairs of chromosomes. A) True B) False 40) A pregnancy test involves antibodies that detect growth hormone (GH) levels in a woman's blood or urit A) True B) False 41) What structure regulates the amount of light passing to the visual receptors of the eye? A) aqueous humor B) iris C) cornea D) lens

Explanation / Answer

34) Placental stage in which the placenta and membrane expels from the uterus called "afterbirth". Where as remaining options:

35)True.

Filtrates enters into collecting duct contains more water content. In collecting dust 'P' cell concerned with reabsorption of water and sodium as well as potassium.

36) Corpus luteum: in the luteal phase ruptured grafian follicle turns collapses and it is filled with blood, granulosa and theca cells modified into large polyhedral cells, and it has yellowish pigment the structure resulted after these changes called corpus luteum.

37) Interstitial endocrine cells of testes also called as leydig cells produces testosterone.

38) The presence of appropriate receptors on the cells the target tissue or organ.

All hormones acts only through specific binding sites on targeted tissue or organ called receptors.

39) False. Because sperm or egg in the human results from Meiotic division which forms the daughter cell with haploid (23 chromosomes) number of chromosomes.

40) False. The pregnancy can be confirmed by the presence of hCG in the urine or blood.

41)Iris.

Iris is the ring of pigmented tissue that surrounding the pupils that vary in color, it opens and closes to control the amount of light enters into eye through pupil.

Where as aqueous humor has function of nourishment and maintenance of structure of eye ball.

Cornea has function like window controls and focuses the entry of light into eye.

Lens has function of focusing light on the retina.

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