Question:
The mammalian neurohypophysis is the source of which of the following principal hormone(s)?
A. Oxytocin
B. Arginine vasopressin
C. Lysine vasopressin
D. Corticosteroid
Choose the correct answer from the options given below
The mammalian neurohypophysis is the source of which of the following principal hormone(s)?
A. Oxytocin
B. Arginine vasopressin
C. Lysine vasopressin
D. Corticosteroid
Choose the correct answer from the options given below
A. Oxytocin
B. Arginine vasopressin
C. Lysine vasopressin
D. Corticosteroid
Choose the correct answer from the options given below
Show Hint
Neurohypophyseal Hormones: Oxytocin + Arginine Vasopressin (AVP ADH). (Swine have Lysine Vasopressin; Adrenal Cortex secretes Corticosteroids).
Updated On: Sep 7, 2026
- A only
- A and B only
- A, B and C only
- All A, B, C and D
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Neurohypophyseal nonapeptides: the posterior pituitary (neurohypophysis) stores and releases oxytocin and arginine vasopressin synthesized in hypothalamic magnocellular nuclei.
Step 2: Detailed Explanation:
Endocrinology of the posterior pituitary (neurohypophysis):
1. A. Oxytocin: Nonapeptide synthesized in paraventricular/supraoptic nuclei, released from neurohypophyseal axonal terminals for milk ejection and myometrial contractions.
2. B. Arginine Vasopressin (AVP Antidiuretic Hormone ADH): The universal mammalian antidiuretic hormone (present in all domestic mammals except swine).
3. C. Lysine Vasopressin (LVP): A species-specific vasopressin variant found only in swine (Suidae) and hippopotamuses, not the general mammalian standard.
4. D. Corticosteroids: Synthesized by the adrenal cortex.
Therefore, the principal mammalian neurohypophyseal hormones are A and B only.
Step 3: Final Answer:
Thus, the principal hormones are A and B only, matching option (B).
Was this answer helpful?
0
0
Top ICAR AIEEA Animal Science Questions
- Which of the following antiviral drug is available for treatment of lumpy skin disease in cow?
- How do you arrange the correct sequence of the following procedural steps for early pregnancy diagnosis in cow?
(A) Do the insemination in adult dairy cows.
(B) Administer a small dose (2.5 mg or 0.5 ml) of Dinoprost (Lutalyse) intravenously through the ear vein.
(C) Observe critically the teat of the animal for alveolar milk to start flowing about one minute later.
(D) After 18 to 22 days and 3 hours prior to the evening milking, place the teat cannula in the left fore-teat and leave it for milk flow from the teat cistern till it ceases.
Choose the correct answer from the options given below which describe the correct sequential steps for early pregnancy diagnosis in cow. - Match List-I with List-II.Choose the correct answer from the options given below.
List-I (Toxic Element) List-II (Effect of toxicity on Animal) (A) Fluoride (I) Abdominal pain and diarrhea can be common clinical signs in animals exposed. (B) Arsenic (II) Short-term exposure may include nausea, vomiting, diarrhea, increase in blood pressure or heart rate, skin rashes and eye irritation. (C) Lead (III) Cattle can show clinical signs of depression, weakness and ataxia with postmortem findings of gastroenteritis and degenerative changes in the renal tubular epithelium. (D) Mercury (IV) Abdominal pain or colic, vomiting, a staggering gait and weakness, incoordination, rapid weak pulse and shock, diarrhea, followed by collapse and death. - Polygene term was given by one of the following?
- According to Hardy Weinberg Law, genotype frequencies in the progeny depend only on the
View More Questions
Top ICAR AIEEA Human Endocrine System Questions
- The disease caused by iodine deficiency in animals is known as:
- Which interleukin inhibits the immune response?
A. IL - 4
B. IL - 13
C. IL - 10
D. IL - 7
Choose the correct answer from the options given below - \(\beta\) - lymphocytes develop immunocompetence in the
A. Bone marrow
B. Spleen
C. Thymus
D. Lymph nodes
Choose the correct answer from the options given below - The structure and function of muscle and non-muscle cells are similar with regard to
A. Mitochondria
B. Ribosomes
C. Endoplasmic reticulum
D. Golgi complex
Choose the correct answer from the options given below - Given below are two statements:
Statement I: A reduction in the secretion of growth hormone (GH) is required for the survival of homeotherms during heat stress
Statement II: Acclimation to thermal stress is identified as a homeostatic process under endocrine control
In light of the above statements, choose the most appropriate answer from the options given below
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