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