1894722
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Quiz von #أطباء_2020 , aktualisiert more than 1 year ago
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Erstellt von #أطباء_2020
vor fast 10 Jahre
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Frage 1
Frage
About hypothalamo-hypophyseal axis all are true except :
Antworten
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Hypothalamus connected to pars nervosa through hypothalamo-hypophyseal tract
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Hypothalamus is connected to pars distalis by tuberoinfundibular tract
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Cells connected to hypothalamus are neurosecretory (neuroendocrine) cells
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All cells of pars distalis are controlled by releasing and inhibitory factors from hypothalamus
Frage 2
Frage
Thyroid follicular cells contain all the following except :
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rER
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sER
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Mitochondria
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Lysosomes
Frage 3
Frage
The most highly vascularized area of the hypophysis is the :
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Pars distalis
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Pars nervosa
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Pars tuberalis
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Pars intermedia
Frage 4
Frage
Spongiocytes are cells of :
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Zona glomerulosa of the suprarenal cortex
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Zona fasciculata of the suprarenal cortex
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pars tuberalis of pituitary gland
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suprarenal medulla
Frage 5
Frage
Premature puberty of a child may be due to hypofunction of :
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Gonadotrophs
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sertoli cells
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pinealocytes
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mammotrophs
Frage 6
Frage
oxyphil cells of parathyroid gland are strongly acidophilic due to :
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Numerous rER
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Numerous lipid droplets
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Abundant mitochondria
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Plenty of lysosomes
Frage 7
Frage
Tanycytes
Antworten
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secrete releasing and inhibiting hormones
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facilitate the hypothalamic control of anterior pituitary
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are cells of pars nervosa
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Are phagocytic cells
Frage 8
Frage
Chromophobes are characterized by all the following Except :
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constitute 10% of pars distalis
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have no or little affinity for the stains
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have no or few secretory granules
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Polygonal cells
Frage 9
Frage
Suprarenal gland:
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the medulla is ectodermal in origin
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Its cortex is endodermal in origin
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has thin connective tissue capsule
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Its cortex is formed of 2 layers
Frage 10
Frage
Herring bodies are structures present in :
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the herring canals in the liver
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cells of adrenal medulla
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Pars nervosa of pituitary gland
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Thyroid gland of old age
Frage 11
Frage
structures typically seen at the border between the renal cortex and medulla are
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vasa recta
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peritubular capillaries
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arcuate arteries and veins
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stellate vein
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interlobular arteries and veins
Frage 12
Frage
collections of cortical tissues between medullary pyramids are called
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interlobular cortex
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renal columns of bertin
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medullary rays
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non of the above
Frage 13
Frage
DCT of the kidney
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has well developed brush border
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lacks a basement membrane
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is composed of simple cubical epithelium
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has numerous rough ER assosciated with basal membrane invagination
Frage 14
Frage
all about DCT are true except
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about 14 mm
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30-40 um in diameter
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formed of straight , convoluted and macula densa portions
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rich in mitochondria oriented longitudinally
Frage 15
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facet cells
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are superficial cells of transitional epithelium
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cuboidal cells may be binucleated
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act as osmotic barrier between urine and tissue fluid
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all of the above
Frage 16
Frage
all of the following makes the juxtaglomerular apparatus except
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podocytes
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juxtaglimerular cells
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macula densa
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lacis cells
Frage 17
Frage
projection of medulla in the renal cortex
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medulla
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lobe
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renal columns
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medullary rays
Frage 18
Frage
kidney secretes all except
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renin
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medullipin
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erythropoietin
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rennin
Frage 19
Frage
nephron cosists of all except
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malpighian corpuscle
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thick limb of loop of henle
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thin limb of loop of henle
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collecting tubules
Frage 20
Frage
the membranous urethra is lined with
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stratified squamous epithelium
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stratified columnar epithelium
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transitional epithelium
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pseudo-stratified columnar ciliated epithelium
Frage 21
Frage
the serous sac which covers the anterior and lateral surfaces of the testis is called :
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tunica vaginalis
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tunica vasculosa
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tunica propria
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tuunica albuginea
Frage 22
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which of the following cells can alter the diameter of seminferous tubules :
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sertoli
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myoid
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spermatid
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spermatogonia
Frage 23
Frage
type B spermatogonia originates from :
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pale type A spermatogonia
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dark type A spermatogonia
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primary spermatocytes
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spermatids
Frage 24
Frage
the interstitial cells of leydig contain all the following EXCEPT :
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basophilic cytoplasm
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mitochondria with tubular cristea
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well developed SER
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numerous lipid droplets
Frage 25
Frage
primary spermatocytes are charichterized by all the following except :
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contains 64 D-chromosomes + 2N DNA
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appear at puberty
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the largest spermatogenic cells
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originate from type B spermatogonia
Frage 26
Frage
crystals of rienke are present in the :
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spermatids
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myoid cells
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sertoli cells
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leydig cells
Frage 27
Frage
these intratesticular ducts arise from the rete testis :
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tubuli recti
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vas deferens
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ductuli efferentes
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seminferous tubules
Frage 28
Frage
the prostatic urethra is lined with :
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st. squamous epithelium
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transitional epithelium
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st. columnar epithelium
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pseudostratified columner epithelium
Frage 29
Frage
the skin of the penis is charicterized by all of the following except :
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pigmented
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has no subcutaneous fat
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thick skin
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highly sensitive
Frage 30
Frage
the middle piece of spermatozoa is rich in :
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ribosomes
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smooth endoplasmic reticulum
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lysosomes
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mitochondria
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