17991412
Descripción
Test por Roshan Sivakumaran, actualizado hace más de 1 año
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Creado por Roshan Sivakumaran
hace alrededor de 5 años
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Pregunta 1
Pregunta
Which of the following characteristics are specific for the neuroglial cells
Respuesta
-
regeneration ability
-
supporting and protective functions
-
collect stimuli and transforms them into nervous impulse
Pregunta 2
Pregunta
Which of the following elements are visible in the neurons by light microscope by light microscopic observation
Respuesta
-
big in size, pale stained nucleus
-
nissl substance
-
tonofibrils
-
neurofibrils
Pregunta 3
Pregunta
The nonmyelinated nerve fibers consist of
Respuesta
-
axon
-
mylein sheath
-
schwann sheath
-
endoneurium
Pregunta 4
Pregunta
The myelinated nerve fibers consist of
Respuesta
-
axon
-
myelin sheath
-
microglia
-
endoneurium
-
schwann sheath
Pregunta 5
Pregunta
parts of the neuron are
Respuesta
-
axon
-
dendrites
-
perikaryon
Pregunta 6
Pregunta
depending on shape of their bodies (perikaryons), the neurons are
Respuesta
-
star shaped
-
pyramidal
-
pear shaped
-
spherical/ spindle shaped
Pregunta 7
Pregunta
Depending on the number of their branches the neurons are
Respuesta
-
unipolar
-
pseudounipolar
-
bipolar
-
multipolar
Pregunta 8
Pregunta
depending on their functions, the neurons are
Respuesta
-
motor
-
sensory
-
associative
-
neuroendocrine
Pregunta 9
Pregunta
the central type of neuroglial cells are
Respuesta
-
astrocytes
-
oligodendrocytes
-
ependyma
-
microglia
Pregunta 10
Pregunta
By light microscope, observation of spinal cord on transverse sections stained with toluidinblue, multipolar neurons with cytoplasm filled with blue granules in the anterior horns are observed. What is the name of these structures, and appearance of which organelle are they
Respuesta
-
nissle substance ( RER)
-
glial cells
Pregunta 11
Pregunta
Under electron microscope, a transverse section of cylindrical in shape structure with dark and light lines arranged in concentric manner is observed. Peripherally, a part of cytoplasm with mitochondria and nucleus is visible. what is the name of the described structure?
Respuesta
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myelinated nerve fiber
-
nonmyelinated nerve fiber
Pregunta 12
Pregunta
under light microscope, on sections from cerebrum stained with AuCl2 star-shaped neurons with numerous long non-branching processes localised in the white matter are observed. some of the processes attach to the blood vessel walls. what is the name of these cells?
Respuesta
-
fibrous astrocyte
-
glial cells
Pregunta 13
Pregunta
under light microscope, on sections stained with OsO4 bundles of black coloured fiber-like structures appear. there are gaps in their outer sheath and it is seen to be an incomplete or interrupted cylinder. radial clefts or fissures, extending through the thickness of the sheath are also visible. what is the name of the described structures?
Respuesta
-
myelinated nerve fibers
-
non myelinated nerve fibers
Pregunta 14
Pregunta
By the oogenesis, 4 mature oocytes occur from 1 oogonium
Respuesta
-
yes
-
no
Pregunta 15
Pregunta
oogenesis is fully completed after the fertilisation of the secondary oocyte
Respuesta
-
yes
-
no
Pregunta 16
Pregunta
by spermatogenesis, 1 mature spermatozoon occurs from one spermatogonia
Respuesta
-
yes
-
no
Pregunta 17
Pregunta
the axis (axonema) of the spermatozoon flagellum is built of microtubules following the 9x3+10 formula
Respuesta
-
yes
-
no
Pregunta 18
Pregunta
the human spermatozoon head looks like 'flame of candle' in shape
Respuesta
-
yes
-
no
Pregunta 19
Pregunta
the mitochondria are arranged in spiral fashion around the middle piece of the spermatozoon flagellum
Respuesta
-
yes
-
no
Pregunta 20
Pregunta
the spermatogenesis starts during the
Respuesta
-
fetal period
-
puberty
-
embryonic period
-
right after birth
Pregunta 21
Pregunta
the spermatozoon acrosome represents
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-
secretory granule
-
lysosome
-
cistern of smooth-surfaced endoplasmic reticulum
-
cistern of golgi
Pregunta 22
Pregunta
oogenesis starts during the
Respuesta
-
embryonic period
-
fetal period
-
right after birth
-
puberty
Pregunta 23
Pregunta
the marker enzyme of the human spermatozoon acrosome is
Respuesta
-
hyaluronidase
-
acid phosphatase
-
alkaline phosphatase
-
lipase
Pregunta 24
Pregunta
which of the following organelles are not present in the ovum (mature oocyte)
Respuesta
-
golgi apparatus
-
mitochondria
-
lysosomes
-
centrioles
Pregunta 25
Pregunta
body of balbani is present in the
Respuesta
-
oogenium
-
primary oocyte
-
primary spermatocyte
-
spermatogonium
Pregunta 26
Pregunta
human spermatogenetic cycle occupies about
Respuesta
-
22 days
-
72 days
-
52 days
Pregunta 27
Pregunta
diameter of human ovum is
Respuesta
-
5 um
-
120 um
-
220 um
Pregunta 28
Pregunta
spermatozoon length is
Respuesta
-
60 um
-
30 um
Pregunta 29
Pregunta
oogenesis is completed
Respuesta
-
before ovulation
-
after fertilisation
-
after puberty
-
before fertilisation
Pregunta 30
Pregunta
which of the following are specific to acrosomes
Respuesta
-
membrane organelle
-
derived from golgi complex
-
contains glycogen
-
built of primary oocyte
-
biochemical analogous to the lysosomes
Pregunta 31
Pregunta
which of the following are specific to spermatogenesis
Respuesta
-
starts during the embryonic period
-
starts with onset of puberty
-
passes through four phases
-
passes through three phases
Pregunta 32
Pregunta
which are specific to secondary spermatocytes
Respuesta
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haploid number of chromosomes
-
formed during the second phase of spermatogenesis
-
biggest in size male germ cells
Pregunta 33
Pregunta
spermatozoon head contains
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nucleus
-
mitochondria
-
centrioles
-
acrosome
Pregunta 34
Pregunta
consecutive stages of spermatogenesis
Respuesta
-
cell multiplication
-
cell growth
-
cell differentiation
-
cell maturation
Pregunta 35
Pregunta
ovum is surrounded by
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-
zona pellucida
-
corona radiata
Pregunta 36
Pregunta
main parts of spermatozoon are
Respuesta
-
head
-
middle piece
-
neck
-
tail
Pregunta 37
Pregunta
consecutive stages of oogenesis
Respuesta
-
cell multiplication
-
cell growth
-
cell differentiation
Pregunta 38
Pregunta
zona pellucida
Respuesta
-
mucoprotein substance
-
microvilli of oocyte and the processes of the follicular cells
-
contacts between the oocyte and the follicular cells
Pregunta 39
Pregunta
type of male germ cells are
Respuesta
-
spermatogonia
-
primary spermatocytes
-
secondary spermatocytes
-
spermatids
-
spermatoza
Pregunta 40
Pregunta
under electron microscope, a round cell with spherical, pale nucleus and prominent nucleolus is observed. in the cell cytoplasm mitochondria, elements of golgi complex and vesicles are arranged in a group and form a common structure localised near the nucleus
Respuesta
-
primary oocyte
-
secondary oocyte
Pregunta 41
Pregunta
by electronic microscopic observation of transverse section of spermatozoon flagellum, centrally placed microtubules surrounded by filamentous sheath and in spiral fashion arranged mitochondria appear.
Respuesta
-
middle piece
-
central piece
Pregunta 42
Pregunta
by light microscopic observation of stained with hematoxylin-eosin section of ovary, a round, big in size cell within a spherical structure appears. the cell is with a pale nucleus ad prominent nucleolus. around the cell a homogenous, deeply stained membrane is visible. outside of it radially arranged cuboidal to cylindrical in shape cells form a layer.
Respuesta
-
oocyte
-
somatic cell
Pregunta 43
Pregunta
Link the parts of the spermatozoon and the corresponding structures.
Respuesta
-
head
-
neck (cervix)
-
middle piece (pars intermedia)
-
tail (flagellum)
-
acrosome
-
mitochondria
-
centriole
Pregunta 44
Pregunta
Fertilisation ability of the spermatozoon is preserved for 24-30 hours
Respuesta
- True
- False
Pregunta 45
Pregunta
Two veins and one artery are present in the umbilical cord on the newborn baby
Respuesta
- True
- False
Pregunta 46
Pregunta
the yolk sack takes part in the formation of the embryo discus
Respuesta
- True
- False
Pregunta 47
Pregunta
amnion is not involved in the formation of the embryo discus
Respuesta
- True
- False
Pregunta 48
Pregunta
the cells obtained as a result of segmentation are called blastomers
Respuesta
- True
- False
Pregunta 49
Pregunta
the trophoblast related structures are associated with the implantation and nutrition of the embryo
Respuesta
- True
- False
Pregunta 50
Pregunta
the smooth chorion takes part in the formation of the fetal sack
Respuesta
- True
- False
Pregunta 51
Pregunta
the embryoblast cells situated on the floor of the amnion differentiate into the ectoderma
Respuesta
- True
- False
Pregunta 52
Pregunta
the chorion frondosum participates in the formation of the placenta
Respuesta
- True
- False
Pregunta 53
Pregunta
linea primitiva is a temporary structure related to the organisation of the mesoderma
Respuesta
- True
- False
Pregunta 54
Pregunta
sperm volume normally is
Respuesta
-
2-6
-
8-10
-
10-12
Pregunta 55
Pregunta
II type of oocyte has a fertlisation ability during
Respuesta
-
6-12 hours
-
12-24 hours
-
24-36 hours
-
36-72 hours
Pregunta 56
Pregunta
the spermatozoa number in 1cm^3 sperm is
Respuesta
-
10-30 x 10^6 /cm^3
-
400-500 x 10^2 /cm^3
-
130-160 x 10^6 / cm^3
-
40-120 x 10^6 / cm^3
Pregunta 57
Pregunta
minimum part of mobile spermatazoa in the sperm necessary for fertilisation is above
Respuesta
-
10%
-
20%
-
30%
-
50%
Pregunta 58
Pregunta
process of transformation of spermatids into spermatazoa is called
Respuesta
-
spermiogenesis
-
spermation
-
capacitation
-
acrosomal reaction
Pregunta 59
Pregunta
the trophoblast is part of
Respuesta
-
embryoblast
-
blastocysta
-
magma reticularis
Pregunta 60
Pregunta
the somites derive from
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-
mesoblast
-
endoblast
-
ectoblast
-
mesenchyme
Pregunta 61
Pregunta
The dermatomes form
Respuesta
-
skin epithelium
-
skin connective tissue
-
skeletal muscles
Pregunta 62
Pregunta
The implantation starts
Respuesta
-
on first day after fertilisation
-
6-7 days after fertilisation
-
10 days after fertilisation
-
15 days after fertilisation
Pregunta 63
Pregunta
The fertilisation is completed in
Respuesta
-
uterus cavity
-
oviduct cavity
-
abdomen
-
ovary
Pregunta 64
Pregunta
what type of function is the oocyte cortical reaction
Respuesta
-
trophic
-
receptor
-
barrier
-
phagocytic
Pregunta 65
Pregunta
umbilical cord of the newborn baby consists of
Respuesta
-
two arteries and 1 vein
-
two arteries and two veins
-
two veins and one artery
-
one artery and one vein
Pregunta 66
Pregunta
The somites form
Respuesta
-
dermatomes
-
sklerotomes
-
myotomes
-
nephrotomes
Pregunta 67
Pregunta
from the mesenchyme derivates
Respuesta
-
cardiac muscle tissue
-
smooth muscle tissue
-
skeletal muscle tissue
-
blood tissue
-
microglia
Pregunta 68
Pregunta
from the ectoblasts derivates
Respuesta
-
nervous tissue
-
blood tissue
-
skin epithelium
-
epithelium of oral cavity
-
smooth muscle tissue
Pregunta 69
Pregunta
the fetal sack wall consists of
Respuesta
-
amnion
-
smooth chorion
-
placental villae
-
covering decidua
-
basal decidua
Pregunta 70
Pregunta
the placental barrier after the third month of embryogenesis consists
Respuesta
-
synctical trophoblast
-
cytotrophoblast
-
epithelium of the placental capillaries
-
mesenchyme of the placental villa
-
epithelium of the uterus capillaries
Pregunta 71
Pregunta
the maternal part of the placenta consists of
Respuesta
-
cotyledones
-
loose connective tissue slips (septae)
-
blood lacunae
-
chorionic plate
Pregunta 72
Pregunta
the fetal part of the placenta consists of
Respuesta
-
loose connective tissue (septae)
-
blood lacunae
-
amnion
-
chorion frondosum
-
cotyledones
Pregunta 73
Pregunta
which of the following are specific for the cortical reaction is
Respuesta
-
completed in corona radiata
-
associated with releasing of the acrosomal enzymes
-
associated with releasing the proteolytic enzymes under the oocyte plasmalemma
-
blocks the passing of more than one spermatozoon into the oocyte
-
associated with destroying of the spermatozoon receptors in zona pellucida
Pregunta 74
Pregunta
parts of mesoblast
Respuesta
-
epimer
-
mesomer
-
hypomer
Pregunta 75
Pregunta
Structures that derive from the somites of the mesoblast
Respuesta
-
dermatomes
-
sclerotomes
-
myotomes
Pregunta 76
Pregunta
specific for the segmentation by the human embryo is
Respuesta
-
asynchronous
-
unequal
Pregunta 77
Pregunta
chorion types are
Respuesta
-
chorion laeve
-
chorion frondosum
Pregunta 78
Pregunta
Trophoblast types are
Respuesta
-
cytotrophoblasts
-
syncytial trophoblasts
Pregunta 79
Pregunta
The process of the transformation of the nervous system passes through the following stages:
Respuesta
-
neural plate
-
neural groove
-
neural tube
Pregunta 80
Pregunta
Under the light microscope, HE staining part of extraembryonal organ that is covered by amnion and contains three blood vessel and mucoid tissue between them appears. what is this organ
Respuesta
-
umbilical cord (after 3rd month)
-
placental villi
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