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Histology

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Quiz on Histology , created by #أطباء_2020 on 21/01/2015.
#أطباء_2020
Quiz by #أطباء_2020 , updated more than 1 year ago
#أطباء_2020
Created by #أطباء_2020 over 9 years ago
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Resource summary

Question 1

Question
About hypothalamo-hypophyseal axis all are true except :
Answer
  • 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

Question 2

Question
Thyroid follicular cells contain all the following except :
Answer
  • rER
  • sER
  • Mitochondria
  • Lysosomes

Question 3

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

Question 4

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

Question 5

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

Question 6

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

Question 7

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

Question 8

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

Question 9

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

Question 10

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

Question 11

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

Question 12

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

Question 13

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

Question 14

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

Question 15

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

Question 16

Question
all of the following makes the juxtaglomerular apparatus except
Answer
  • podocytes
  • juxtaglimerular cells
  • macula densa
  • lacis cells

Question 17

Question
projection of medulla in the renal cortex
Answer
  • medulla
  • lobe
  • renal columns
  • medullary rays

Question 18

Question
kidney secretes all except
Answer
  • renin
  • medullipin
  • erythropoietin
  • rennin

Question 19

Question
nephron cosists of all except
Answer
  • malpighian corpuscle
  • thick limb of loop of henle
  • thin limb of loop of henle
  • collecting tubules

Question 20

Question
the membranous urethra is lined with
Answer
  • stratified squamous epithelium
  • stratified columnar epithelium
  • transitional epithelium
  • pseudo-stratified columnar ciliated epithelium

Question 21

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

Question 22

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

Question 23

Question
type B spermatogonia originates from :
Answer
  • pale type A spermatogonia
  • dark type A spermatogonia
  • primary spermatocytes
  • spermatids

Question 24

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

Question 25

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

Question 26

Question
crystals of rienke are present in the :
Answer
  • spermatids
  • myoid cells
  • sertoli cells
  • leydig cells

Question 27

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

Question 28

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

Question 29

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

Question 30

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