Lecture 30/31 Embryology

Daniel Mosele
Quiz by Daniel Mosele, updated more than 1 year ago
Daniel Mosele
Created by Daniel Mosele over 4 years ago
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DVM1 Veterinary Bioscience: Cells to Systems (Theme 9 Embryology) Quiz on Lecture 30/31 Embryology, created by Daniel Mosele on 06/08/2016.

Resource summary

Question 1

Question
Morphogenesis is
Answer
  • Ordered assembly of cells to form complex organs
  • processes by which cells interact and become permanently changed
  • formation of body structures and organs
  • progressive series of changes in structures and functions that lead to maturity
  • Processes by which cells become different to one another

Question 2

Question
Complete each of the following sentences The first diploid cell formed by fusion of egg and sperm is a [blank_start]zygote[blank_end]. A [blank_start]Blastocyst[blank_end] is the early stage in development before implantation, it consists of an outer trophoblast and an inner cell mass. An [blank_start]Embryo[blank_end] is an egg that has been fertilised by a sperm that has undergone one or more divisions [blank_start]Cleavage[blank_end] results in a solid cluster of cells called a [blank_start]Morula[blank_end]. The Accumulation of secretions within the trophoblast lead to the formation of a cavity called the [blank_start]Blastocele[blank_end].
Answer
  • zygote
  • Blastocyst
  • Embryo
  • Cleavage
  • Morula
  • Blastocele
  • Blastocyst
  • Zygote
  • Embryo
  • Cleavage
  • Morula
  • Blastocele
  • Embryo
  • Morula
  • Cleavage
  • Zygote
  • Blastocyst
  • Blastocele
  • Cleavage
  • Zygote
  • Blastocyst
  • Embryo
  • Blastocele
  • Morula
  • Morula
  • Zygote
  • Blastocyst
  • Embryo
  • Cleavage
  • Blastocele
  • Blastocele
  • Zygote
  • Blastocyst
  • Embryo
  • Cleavage
  • Morula

Question 3

Question
The Zonula Pellucida is the capsule that surrounds the initial embryo before implantation
Answer
  • True
  • False

Question 4

Question
Which of the following statements is true regarding Cleavage
Answer
  • Cleavage results in an increase in the number of cells
  • Cleavage results in an increase in the size of the embryo
  • Cleavage results in the formation of a Zygote then ultimately a Blastocyst
  • Cleavage results in the formation of a Morula then ultimately a Blastocyst
  • Cleavage results in the formation of a Morula then ultimately a Blastocele
  • Cleavage results in the formation of a Zygote then ultimately a Morula
  • Placental Mammals undergo only partial cleavage
  • Avian Animals undergo only partial cleavage
  • Avian Mammals have minimal yolk
  • Placental Mammals have minimal yolk

Question 5

Question
The Trophoblast of a Blastocyst has
Answer
  • Tighter Junctions than the Embryonic Disc
  • GAP junctions allowing for better communication
  • Facilitates the absorption of nutrients
  • undergoes transformation to give 3 germ layers
  • surrounds the blastocele

Question 6

Question
Which of the following statements regarding Gastrulation is correct?
Answer
  • Leads to the formation of 3 germ layers: Endoderm, Mesoderm, Ectoderm
  • Arises from Trophoblast rearrangement
  • Arises from Embryonic Disc rearrangement
  • The first cells that migrate through the primitive strike give rise to Endoderm
  • The first cells that migrate through the primitive strike give rise to Mesoderm
  • The first cells that migrate through the primitive strike give rise to Ectoderm
  • The Coelem establishes it self within the lateral mesoderm
  • The Coelem establishes it self within the Paraxial mesoderm
  • Somatic Mesoderm is attached to Endoderm
  • Splanchic Mesoderm is attached to Endoderm

Question 7

Question
Ectoderm gives rise to
Answer
  • Epidermis of Skin
  • Dermis of Skin
  • CNS
  • Adrenal Medulla
  • Visceral Pleura and Peritoneum
  • GIT
  • Parenchyma of the Liver
  • Lining of the Tarchea
  • Appendicular Skeleton
  • Uterus

Question 8

Question
Splanchic Mesoderm gives rise to
Answer
  • Yolk Sac
  • Allantois
  • Visceral Pleura/Peritoneum
  • Myocardium
  • Amnion
  • Chorion
  • Parietal Pleura
  • Pericardium
  • Uterus
  • Renal Pelvis

Question 9

Question
Which of the following structures are derived from endoderm?
Answer
  • Lining of GIT
  • Dermis of Skin
  • Lining of Larynx
  • Lining of Trachea
  • Urogenital Sinus
  • Renal Pelvis
  • Liver Parenchyma
  • Pancreas Parenchyma
  • Kidney Tubules
  • Amnion/Chorion

Question 10

Question
The Notochord gives rise to the vertebral column
Answer
  • True
  • False

Question 11

Question
A is the [blank_start]Primitive Gut[blank_end] B is the [blank_start]Chorion[blank_end] C is the [blank_start]Amnion[blank_end] D is the [blank_start]Alantochorion[blank_end] E is the [blank_start]Alantois[blank_end] F is the [blank_start]Yolk Sac[blank_end]
Answer
  • Primitive Gut
  • Chorion
  • Amnion
  • Alantochorion
  • Alantois
  • Yolk Sac
  • Chorion
  • Primitive Gut
  • Amnion
  • Alantochorion
  • Alantois
  • Yolk Sac
  • Amnion
  • Primitive Gut
  • Chorion
  • Alantochorion
  • Alantois
  • Yolk Sac
  • Alantochorion
  • Primitive Gut
  • Chorion
  • Amnion
  • Alantois
  • Yolk Sac
  • Alantois
  • Primitive Gut
  • Chorion
  • Amnion
  • Alantochorion
  • Yolk Sac
  • Yolk Sac
  • Primitive Gut
  • Chorion
  • Amnion
  • Alantochorion
  • Alantois

Question 12

Question
Which of the following statements are true
Answer
  • Red represents Trophoblast
  • Red represents Mesoderm
  • Red represents Endoderm
  • Green represents Endoderm
  • Green represents Mesoderm
  • Green represents Trophoblast
  • Blue represents Trophoblast
  • Blue represents Endoderm
  • Blue represents Mesoderm

Question 13

Question
Which statements regarding the Chorion are correct?
Answer
  • Part of it is derived from Mesoderm
  • Part of it is derived from Endoderm
  • Part of it is derived from the Trophoblast
  • Mediates the Attachment to the Uterus
  • It is a fluid filled sac that protects the embryo
  • Regresses over time in mammals
  • contributes primitive germ cells
  • derived from primitive gut
  • fluid filled sac that collects waste
  • A portion of it fuses with the Alantois

Question 14

Question
Which statements regarding the Amnion are correct?
Answer
  • Derived from Endoderm
  • Derived from Mesoderm
  • Derived from the Trophoblast
  • mediates attachment to the uterus
  • is a fluid filled sac that protects the embryo
  • eventually fuses with the chorion
  • contributes primitive germ cells
  • derived from primitive gut
  • collects waste from the embryo
  • Regresses with time in mammals

Question 15

Question
Which of the following statements are correct regarding the Yolk Sac?
Answer
  • Derived from Endoderm
  • Derived from Mesoderm
  • Derived from the Trophoblast
  • Mediates attachment to the Uterus
  • Fluid filled sac that protects the embryo
  • derived from the primitive gut
  • regressive with time in mammals
  • contributes primitive germ cells
  • fluid filled sac that collects waste
  • eventually fuses with the chorion

Question 16

Question
Which of the following are incorrect?
Answer
  • The Allantois is derived from the primitive gut
  • The Allantois is a fluid filled sac that collects waste
  • The Allantois fuses with the Chorion to form the foetal contribution to the placenta
  • The Allantochorion is derived of both Mesoderm and Trophoblast
  • The Allantois decreases in size other time in mammals

Question 17

Question
The first seven somitomeres give rise to Somites
Answer
  • True
  • False

Question 18

Question
Which of the following regarding Somitomeres is incorrect?
Answer
  • Some give rise to mesodermal structures of the head
  • Some give rise to the axial skeleton and musculature
  • Arise from thickenings of mesoderm adjacent to the neural tube
  • Consist of Lateral Mesoderm, both Somatic and Splanchic.
  • None of the Above are incorrect
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