Question:
On day 21 of a 28-day menstrual cycle, which hormone profile is correct?
On day 21 of a 28-day menstrual cycle, which hormone profile is correct?
Show Hint
Day 21 = luteal phase = high progesterone with suppressed FSH and LH.
Updated On: May 14, 2026
- $\uparrow P, \uparrow E, \downarrow FSH, \downarrow LH$
- $\uparrow P, \downarrow E, \downarrow FSH, \downarrow LH$
- $\downarrow P, \downarrow E, \uparrow LH, \uparrow FSH$
- $\uparrow E, \downarrow P, \uparrow LH, \downarrow FSH$
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Concept:
Day 21 of a 28-day cycle lies in the luteal phase. In the luteal phase, the corpus luteum secretes progesterone. FSH and LH are suppressed by negative feedback.
Step 1: Identify the phase.
Ovulation occurs around day 14. Day 21 is after ovulation, so it is the: \[ \text{Luteal phase} \]
Step 2: Identify the dominant hormone.
The corpus luteum produces progesterone: \[ P \uparrow \]
Step 3: Understand feedback effect.
Progesterone suppresses pituitary gonadotropins: \[ FSH \downarrow, \quad LH \downarrow \] Among the given options, the best matching profile is: \[ \uparrow P, \downarrow E, \downarrow FSH, \downarrow LH \] Therefore, the correct answer is Option B.
Step 1: Identify the phase.
Ovulation occurs around day 14. Day 21 is after ovulation, so it is the: \[ \text{Luteal phase} \]
Step 2: Identify the dominant hormone.
The corpus luteum produces progesterone: \[ P \uparrow \]
Step 3: Understand feedback effect.
Progesterone suppresses pituitary gonadotropins: \[ FSH \downarrow, \quad LH \downarrow \] Among the given options, the best matching profile is: \[ \uparrow P, \downarrow E, \downarrow FSH, \downarrow LH \] Therefore, the correct answer is Option B.
Was this answer helpful?
0
0
Top NEET PG Physiology Questions
- Identify the marked region in the given spirometry.
- A man was brought to the emergency after suddenly becoming unconscious while working inthe field. On examination, his temperature was 105 degrees Fahrenheit, and his skin turgorwas decreased. Which of the following would not be seen in the patient?
- Identify the correctly matched pair of substances with their renal clearance from the graph below.
- Identify the true statement regarding the given nerve action potential curve?
- Identify the type of transport across the cell membrane given below?
View More Questions
Top NEET PG Human Endocrine System Questions
- In an experimental study, blood glucose levels were elevated to 2--3 times the normal and maintained at that level. What is the most likely pattern of insulin secretion in response?
- A woman presenting with amenorrhea and galactorrhea is diagnosed with a pituitary adenoma and elevated prolactin levels. What is the most likely cause of her amenorrhea?
Top NEET PG Questions
- A patient hailing from Delhi presents with fever, arthralgia, and extensive petechial rash for 3 days. Lab investigations revealed a hemoglobin of 9 g/ dL, a white blood cell count of 9000 cells/mm3, a platelet count of 20000 cells/mm3, and a prolonged bleeding time. The clotting time was normal. What is the most likely diagnosis?
- Which of the following statements is true about Trichomonas vaginalis?
- A lady from West Rajasthan presented with an ulcer surrounded by erythema on the right leg. Microscopy of the biopsy from the edge of the ulcer showed organisms with dark staining nuclei and kinetoplast. What is the most likely causative agent?
- A child presents with a fever and a rash. Urine examination showed cells with owl's eye appearance. What is the most likely diagnosis?
- Infection with Clonorchis sinensis is associated with an increased risk of__?
View More Questions