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Embryology & Histology HyprPaper – 3

September 19, 2020

WELCOME TO YOUR Embryology & Histology HYPRPAPER!

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Question 1 of 43

1. Question
Which one of the following statements regarding spermatogenesis is correct?
- Each primary spermatocyte contains forty four autosomes and two sex chromosomes
- The normal chromosome number of human secondary spermatocytes is twenty two autosomes and two different sex chromosomes
- Two spermatozoa are derived from one primary spermatocyte
- Each spermatid undergoes mitosis to form two spermatozoa
Correct

Incorrect
Question 2 of 43

2. Question
Which one of the events concerning fertilization is INCORRECT?
- Restoration of the diploid number of chromosomes
- Initiation of cleavage of the zygote
- Determination of sex of the zygote
- Dispersion of the corona radiata
Correct

Incorrect
Question 3 of 43

3. Question
Which one of the statements regarding morula is INCORRECT?
- It contains a single fluid filled cavity
- It consists of sixteen cells
- It enters the uterus about the third day after fertilization
- It is surrounded by zona pellucida
Correct

Incorrect
Question 4 of 43

4. Question
Which statement concerning the syncytiotrophoblast is correct?
- It surrounds the early blastocyst
- It has well defined cell boundaries
- It shows little invasive activity
- It is derived from cyotrophoblast
Correct

Incorrect
Question 5 of 43

5. Question
Which of the following twins share the same DNA set, thus they may share many similar attributes?
- Monozygotic
- Dizygotic
- Unidentical
- Paternal
Correct

Incorrect
Question 6 of 43

6. Question
All of the following structures are derived from the mesoderm EXCEPT:
- Muscles
- Cartilage
- Epidermis
- Blood vessels
Correct

Incorrect
Question 7 of 43

7. Question
Which one of the following statements concerning the cloacal membrane is INCORRECT?
- It is composed of fused layers of ectoderm and endoderm
- It is located cranial to the primitive streak
- It is closely associated with the primitive streak
- It is located between the primitive streak and the connecting stalk
Correct

Incorrect
Question 8 of 43

8. Question
Which of the following statements concerning the neural tube is correct?
- The neural tube is derived from the mesoderm
- The cavity of the neural tube communicates with the yolk sac via the anterior neuropore
- The posterior neuropore closes earlier than the anterior neuropore
- The neural tube extends caudally up to the level of the primitive node
Correct

Incorrect
Question 9 of 43

9. Question
Which of the following structures is derived from the intra-embryonic mesoderm?
- Somites
- Neural tube
- Neural crest
- Primitive gut
Correct

Incorrect
Question 10 of 43

10. Question
Which one of the following parts of the mesoderm gives rise to the dermo-myotome?
- Paraxial
- Intermediate
- Lateral plate
- Extra-embryonic
Correct

Incorrect
Question 11 of 43

11. Question
Which of the following statements regarding the chorion is correct?
- The epiblast and hypoblast together constitute the chorion
- It is formed by intra-embryonic mesoderm and decidua
- The villi present in the placenta are derived from the chorion
- It gives rise to the primitive gut of the embryo
Correct

Incorrect
Question 12 of 43

12. Question
Cells of which one of the following embryonic structures give rise to the formation of the primitive streak?
- Hypoblast
- Cytotrophoblast
- Epiblast
- Extra-embryonic mesoderm
Correct

Incorrect
Question 13 of 43

13. Question
Which of the following statements regarding spermatogenesis is correct?
- Primitive germ cells directly give rise to primary spermatocytes
- One primary spermatocyte gives rise to two spermatozoa after meiosis
- It occurs within the lumen of the seminiferous tubules
- The primordial germ cells are derived from the mesoderm
Correct

Incorrect
Question 14 of 43

14. Question
From which of the following structures is the placenta derived?
- Chorion laevae and decidua capsularis
- Uterine musculture
- Chorion frondosum and decidua basalis
- Decidua parietalis
Correct

Incorrect
Question 15 of 43

15. Question
Which of the following statements with regard to the development of congenital malformations of the spinal cord is INCORRECT?
- Spina bifida refers to the failure of fusion of the dorsal portions of the vertebrae
- Spina bifida occulta is not visible on the surface as the malformation is covered by skin
- Normally the neural tube forms a closed tubular structure by the end of the 3rd week
- Myelocoele refers to a condition where the nervous tissue is exposed to the surface due to failure of closure of the neural tube
Correct

Incorrect
Question 16 of 43

16. Question
How many spermatozoa are formed from one primary spermatocyte during spermatogenesis?
- One
- Two
- Three
- Four
Correct

Incorrect
Question 17 of 43

17. Question
During ovulation which of the following cells of oogenesis is expelled from the ovary?
- Oogonium
- Primary oocyte
- Secondary oocyte
- Ovum
Correct

Incorrect
Question 18 of 43

18. Question
After ovulation the corpus luteum is formed within which of the following structures?
- Ovary
- Uterine tube
- Uterus
- Vagina
Correct

Incorrect
Question 19 of 43

19. Question
Which of the following activities is NOT a function of amniotic fluid?
- Protection
- Fluid exchange
- Gas exchange
- Temperature regulation
Correct

Incorrect
Question 20 of 43

20. Question
Which statement regarding the umbilical cord is INCORRECT?
- It is usually attached near the centre of the placenta
- It may not be attached to the placenta
- It is covered by the chorionic membrane
- It usually contains two arteries and one vein
Correct

Incorrect
Question 21 of 43

21. Question
Dense regular connective tissue is present in which of the following structures?
- Skin
- Superficial fascia
- Blood vessels
- Tendons
Correct

Incorrect
Question 22 of 43

22. Question
Which of the following bones are completely formed by intra-membranous ossification?
- Pelvic bones
- Long bones of the lower limb
- Flat bones of the skull
- Phalanges
Correct

Incorrect
Question 23 of 43

23. Question
Which of the following statements regarding folding of the embryo is INCORRECT?
- After the head folding the heart and pericardial cavity come to lie ventral to the foregut
- During folding at the caudal end, part of the yolk-sac is incorporated into the embryo as the midgut
- The terminal part of the hindgut forms the cloaca
- As the amniotic cavity expands, the amnion forms an external investment for the umbilical cord
Correct

Incorrect
Question 24 of 43

24. Question
Which statement regarding the oropharyngeal membrane is INCORRECT?
- It is composed of ectoderm and endoderm
- It is located at the future site of the mouth
- It is associated with the cranial end of the notochord
- It is a trilaminar membrane situated cranial to the notochord
Correct

Incorrect
Question 25 of 43

25. Question
By which one of the following types of epithelium is the urinary bladder lined?
- Squamous
- Cuboidal
- Transitional
- Columnar
Correct

Incorrect
Question 26 of 43

26. Question
All of the following are contractile cells EXCEPT:
- Myoepithelial cells
- Myofibroblasts
- Adipocytes
- Pericytes
Correct

Incorrect
Question 27 of 43

27. Question
To which category of cells do astrocytes belong?
- Neuroglial cells
- Blood cells
- Loose connective tissue
- Cartilage cells
Correct

Incorrect
Question 28 of 43

28. Question
Which of the following is responsible for bone absorption?
- Osteoblast
- Osteoclast
- Osteoid
- Osteocyte
Correct

Incorrect
Question 29 of 43

29. Question
Which of the following cells is NOT classified as simple epithelium?
- Squamous
- Cuboidal
- Transitional
- Columnar
Correct

Incorrect
Question 30 of 43

30. Question
Which of the following cells synthesizes collagen fibres?
- Adipose cells
- Macrophages
- Mast cells
- Fibroblasts
Correct

Incorrect
Question 31 of 43

31. Question
The nuclei of the columnar epithelial cells are:
- Flattened
- Rounded
- Rod-shaped
- Spindle-shaped
Correct

Incorrect
Question 32 of 43

32. Question
The cords of Billroth are found in which of the following organs?
- Thymus
- Spleen
- Lymph node
- Lingual tonsil
Correct

Incorrect
Question 33 of 43

33. Question
B lymphocytes produce immunoglobulins. Which of the following organelles would be abundant in these cells for this function?
- Lysosomes
- Smooth endoplasmic reticulum
- Rough endoplasmic reticulum
- Nuclei
Correct

Incorrect
Question 34 of 43

34. Question
Which of the following structures is a derivative of the notochord?
- Vertebral body
- Nucleus pulposus of the inter-vertebral disc
- Occipital bone of the skull
- Spinal cord
Correct

Incorrect
Question 35 of 43

35. Question
Which of the following statements concerning myelin is correct?
- It is formed by Schwann cells
- It wraps around muscle fibres
- It is seen as continuous deposits
- It decreases nerve conduction
Correct

Incorrect
Question 36 of 43

36. Question
Which of the following statements concerning T lymphocytes is correct?
- They are formed in the thymus gland
- They are polymorphs
- They are formed in the bone marrow
- They are formed in the spleen
Correct

Incorrect
Question 37 of 43

37. Question
Which of the following is the main cell type in lymphatic tissues and organs?
- Monocytes
- Neutrophils
- Macrophages
- Lymphocytes
Correct

Incorrect
Question 38 of 43

38. Question
The germinal center of a lymph nodule develops when a lymphocyte that has recognized an antigen returns to a primary nodule and undergoes which of the following processes?
- Degeneration
- Regeneration
- Apoptosis
- Proliferation
Correct

Incorrect
Question 39 of 43

39. Question
Which of the following statements regarding the palatine tonsil is correct?
- It is lined by a stratified squamous non-keratinzed epithelium
- It is completely surrounded by a capsule
- It is lined by a simple columnar ciliated epithelium
- It receives afferent lymph vessels
Correct

Incorrect
Question 40 of 43

40. Question
Which of the following is a large cell with a narrow rim of cytoplasm and an eccentric nucleus?
- Macrophage
- Fibroblast
- Adipose cell
- Red blood cell
Correct

Incorrect
Question 41 of 43

41. Question
Which one of the following germ cells does NOT undergo cell division?
- Spermatogonia
- Primary oocyte
- Spermatid
- Oogonia
Correct

Incorrect
Question 42 of 43

42. Question
Fibrocrtilage is present in which of the following structures?
- External ear
- Nose
- Inter-vertebral disc
- Trachea
Correct

Incorrect
Question 43 of 43

43. Question
Which of the following types of epithelium has the properties of stretchability and impermeability?
- Transitional
- Pseudostratified columnar
- Stratified cuboidal
- Simple squamous
Correct

Incorrect

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Embryology & Histology HyprPaper – 3

September 19, 2020

WELCOME TO YOUR Embryology & Histology HYPRPAPER!

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