Question:
Which type of chorioallantoic placenta is present in mare?
(A). Diffuse
(B). Villous
(C). Epitheliochorial
(D). Non - deciduate
Choose the correct answer from the options given below:
Which type of chorioallantoic placenta is present in mare?
(A). Diffuse
(B). Villous
(C). Epitheliochorial
(D). Non - deciduate
Choose the correct answer from the options given below:
(A). Diffuse
(B). Villous
(C). Epitheliochorial
(D). Non - deciduate
Choose the correct answer from the options given below:
Show Hint
Mares and sows share very similar placental characteristics: both have diffuse, epitheliochorial, and non-deciduate placentation, ensuring a safe and bloodless separation of fetal membranes at birth.
Updated On: Jul 14, 2026
- (A), (B) and (C) only.
- (A), (B) and (D) only.
- (A), (B), (C) and (D).
- (B), (C) and (D) only.
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Placentas in domestic animals are classified based on their gross anatomical shape (distribution of chorionic villi) and their histological layers (the maternal-fetal interface).
Step 2: Detailed Explanation:
Let us evaluate the classifications for the equine (mare) placenta:
(A) Diffuse: Anatomically, the mare's placenta is diffuse. The chorionic villi are distributed over almost the entire surface of the chorionic sac, forming microcotyledons. (True)
(B) Villous: The microscopic interdigitations between the maternal endometrium and the fetal chorion consist of branching chorionic villi that fit into maternal crypts. (True)
(C) Epitheliochorial: Histologically, all six tissue layers (three maternal and three fetal) remain intact. The maternal endometrial epithelium remains in direct contact with the fetal chorionic epithelium without any erosion of maternal tissue. (True)
(D) Non-deciduate: Because it is epitheliochorial, there is no fusion or deep invasion of maternal tissues. During parturition, the fetal membranes separate cleanly from the maternal endometrium without shedding any maternal decidua or causing uterine bleeding. (True)
Since all four statements (A, B, C, and D) correctly characterize the placenta of the mare, the correct option is (C).
Step 3: Final Answer:
All listed classifications apply to the mare, so the correct option is (C).
Placentas in domestic animals are classified based on their gross anatomical shape (distribution of chorionic villi) and their histological layers (the maternal-fetal interface).
Step 2: Detailed Explanation:
Let us evaluate the classifications for the equine (mare) placenta:
(A) Diffuse: Anatomically, the mare's placenta is diffuse. The chorionic villi are distributed over almost the entire surface of the chorionic sac, forming microcotyledons. (True)
(B) Villous: The microscopic interdigitations between the maternal endometrium and the fetal chorion consist of branching chorionic villi that fit into maternal crypts. (True)
(C) Epitheliochorial: Histologically, all six tissue layers (three maternal and three fetal) remain intact. The maternal endometrial epithelium remains in direct contact with the fetal chorionic epithelium without any erosion of maternal tissue. (True)
(D) Non-deciduate: Because it is epitheliochorial, there is no fusion or deep invasion of maternal tissues. During parturition, the fetal membranes separate cleanly from the maternal endometrium without shedding any maternal decidua or causing uterine bleeding. (True)
Since all four statements (A, B, C, and D) correctly characterize the placenta of the mare, the correct option is (C).
Step 3: Final Answer:
All listed classifications apply to the mare, so the correct option is (C).
Was this answer helpful?
0
0
Top ICAR AIEEA Veterinary Science Questions
- In ox vallate papillae are
- Spiral colon is characteristic of
- Assertion (A) : Stratum lucidum is translucent layer present between stratum spinosum and stratum granulosum
Reasoning (R) : Stratum lucidum is translucent due to presence of eledin protein.
In light of the above statements, choose the correct answer from the options given below. - Statement (I): Keratinocytes contain melanin pigment in the form of melanosomes.
Statement (II): Melanin pigment is produced by keratinocytes with the help of Tyrosinase enzyme.
In light of the above statements, choose the most appropriate answer from the options given below. - Which of the following is true for mast cells?
(A). These cells are common in loose connective tissue.
(B). These cells take metachromatic stain.
(C). These cells are rich in histamine, heparin and proteases.
(D). These cells contain basophilic cytoplasmic granules.
Choose the correct answer from the options given below:
View More Questions
Top ICAR AIEEA Embryology Questions
- Yolk sac involutes 3-4 weeks after conception in
- Which type of chorioallantoic placenta is present in mare?
(A). Diffuse
(B). Villous
(C). Epitheliochorial
(D). Non - deciduate
Choose the correct answer from the options given below: - Match List-I with List-II
List-I (Organ)
(A). External ear
(B). Middle ear
(C). Inner ear
(D). Retina
List-II (Embryonic part from which it develops)
(I). Endoderm of the $1^{st}$ pharyngeal pouch
(II). Ectoderm of $1^{st}$ branchial groove
(III). Neuroectoderm
(IV). Ectoderm lateral to developing hind brain
Choose the correct answer:} - Yolk sac involutes 3-4 weeks after conception in
- Match List-I with List-II
List-I (Organ)
(A). External ear
(B). Middle ear
(C). Inner ear
(D). Retina
List-II (Embryonic part from which it develops)
(I). Endoderm of the $1^{st}$ pharyngeal pouch
(II). Ectoderm of $1^{st}$ branchial groove
(III). Neuroectoderm
(IV). Ectoderm lateral to developing hind brain
Choose the correct answer:}
View More Questions
Top ICAR AIEEA Questions
- Which of the following statements is false?
- Which of the following is an example of an inventory?
- According to Adam Smith, productivity gains could be brought about through .
- The supply curve for an artificially scarce good is .
- Which of the following would not be considered an opportunity cost of paid employment?
View More Questions