Histology

Beschreibung

Quiz am Histology , erstellt von #أطباء_2020 am 21/01/2015.
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Quiz von #أطباء_2020 , aktualisiert more than 1 year ago
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Erstellt von #أطباء_2020 vor mehr als 9 Jahre
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Zusammenfassung der Ressource

Frage 1

Frage
About hypothalamo-hypophyseal axis all are true except :
Antworten
  • Hypothalamus connected to pars nervosa through hypothalamo-hypophyseal tract
  • Hypothalamus is connected to pars distalis by tuberoinfundibular tract
  • Cells connected to hypothalamus are neurosecretory (neuroendocrine) cells
  • 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 :
Antworten
  • rER
  • sER
  • Mitochondria
  • Lysosomes

Frage 3

Frage
The most highly vascularized area of the hypophysis is the :
Antworten
  • Pars distalis
  • Pars nervosa
  • Pars tuberalis
  • Pars intermedia

Frage 4

Frage
Spongiocytes are cells of :
Antworten
  • Zona glomerulosa of the suprarenal cortex
  • Zona fasciculata of the suprarenal cortex
  • pars tuberalis of pituitary gland
  • suprarenal medulla

Frage 5

Frage
Premature puberty of a child may be due to hypofunction of :
Antworten
  • Gonadotrophs
  • sertoli cells
  • pinealocytes
  • mammotrophs

Frage 6

Frage
oxyphil cells of parathyroid gland are strongly acidophilic due to :
Antworten
  • Numerous rER
  • Numerous lipid droplets
  • Abundant mitochondria
  • Plenty of lysosomes

Frage 7

Frage
Tanycytes
Antworten
  • secrete releasing and inhibiting hormones
  • facilitate the hypothalamic control of anterior pituitary
  • are cells of pars nervosa
  • Are phagocytic cells

Frage 8

Frage
Chromophobes are characterized by all the following Except :
Antworten
  • constitute 10% of pars distalis
  • have no or little affinity for the stains
  • have no or few secretory granules
  • Polygonal cells

Frage 9

Frage
Suprarenal gland:
Antworten
  • the medulla is ectodermal in origin
  • Its cortex is endodermal in origin
  • has thin connective tissue capsule
  • Its cortex is formed of 2 layers

Frage 10

Frage
Herring bodies are structures present in :
Antworten
  • the herring canals in the liver
  • cells of adrenal medulla
  • Pars nervosa of pituitary gland
  • Thyroid gland of old age

Frage 11

Frage
structures typically seen at the border between the renal cortex and medulla are
Antworten
  • vasa recta
  • peritubular capillaries
  • arcuate arteries and veins
  • stellate vein
  • interlobular arteries and veins

Frage 12

Frage
collections of cortical tissues between medullary pyramids are called
Antworten
  • interlobular cortex
  • renal columns of bertin
  • medullary rays
  • non of the above

Frage 13

Frage
DCT of the kidney
Antworten
  • has well developed brush border
  • lacks a basement membrane
  • is composed of simple cubical epithelium
  • has numerous rough ER assosciated with basal membrane invagination

Frage 14

Frage
all about DCT are true except
Antworten
  • about 14 mm
  • 30-40 um in diameter
  • formed of straight , convoluted and macula densa portions
  • rich in mitochondria oriented longitudinally

Frage 15

Frage
facet cells
Antworten
  • are superficial cells of transitional epithelium
  • cuboidal cells may be binucleated
  • act as osmotic barrier between urine and tissue fluid
  • all of the above

Frage 16

Frage
all of the following makes the juxtaglomerular apparatus except
Antworten
  • podocytes
  • juxtaglimerular cells
  • macula densa
  • lacis cells

Frage 17

Frage
projection of medulla in the renal cortex
Antworten
  • medulla
  • lobe
  • renal columns
  • medullary rays

Frage 18

Frage
kidney secretes all except
Antworten
  • renin
  • medullipin
  • erythropoietin
  • rennin

Frage 19

Frage
nephron cosists of all except
Antworten
  • malpighian corpuscle
  • thick limb of loop of henle
  • thin limb of loop of henle
  • collecting tubules

Frage 20

Frage
the membranous urethra is lined with
Antworten
  • stratified squamous epithelium
  • stratified columnar epithelium
  • transitional epithelium
  • pseudo-stratified columnar ciliated epithelium

Frage 21

Frage
the serous sac which covers the anterior and lateral surfaces of the testis is called :
Antworten
  • tunica vaginalis
  • tunica vasculosa
  • tunica propria
  • tuunica albuginea

Frage 22

Frage
which of the following cells can alter the diameter of seminferous tubules :
Antworten
  • sertoli
  • myoid
  • spermatid
  • spermatogonia

Frage 23

Frage
type B spermatogonia originates from :
Antworten
  • pale type A spermatogonia
  • dark type A spermatogonia
  • primary spermatocytes
  • spermatids

Frage 24

Frage
the interstitial cells of leydig contain all the following EXCEPT :
Antworten
  • basophilic cytoplasm
  • mitochondria with tubular cristea
  • well developed SER
  • numerous lipid droplets

Frage 25

Frage
primary spermatocytes are charichterized by all the following except :
Antworten
  • contains 64 D-chromosomes + 2N DNA
  • appear at puberty
  • the largest spermatogenic cells
  • originate from type B spermatogonia

Frage 26

Frage
crystals of rienke are present in the :
Antworten
  • spermatids
  • myoid cells
  • sertoli cells
  • leydig cells

Frage 27

Frage
these intratesticular ducts arise from the rete testis :
Antworten
  • tubuli recti
  • vas deferens
  • ductuli efferentes
  • seminferous tubules

Frage 28

Frage
the prostatic urethra is lined with :
Antworten
  • st. squamous epithelium
  • transitional epithelium
  • st. columnar epithelium
  • pseudostratified columner epithelium

Frage 29

Frage
the skin of the penis is charicterized by all of the following except :
Antworten
  • pigmented
  • has no subcutaneous fat
  • thick skin
  • highly sensitive

Frage 30

Frage
the middle piece of spermatozoa is rich in :
Antworten
  • ribosomes
  • smooth endoplasmic reticulum
  • lysosomes
  • mitochondria
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