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NEET Questions / Zoology / Chemical Coordination and Integration
Adrenaline is primarily produced by which gland?
Thyroid gland
Pituitary gland
Pancreas
Adrenal gland
Which hormone is responsible for the 'fight-or-flight' response?
Insulin
Thyroxine
Growth hormone
Adrenaline
A woman with Turner syndrome undergoes karyotyping. Which of the following is the MOST likely observation regarding her ovarian follicles?
Absent or very few follicles
Increased number of follicles
Normal number of follicles
Follicles with abnormal morphology
Which specific cell type within the ovary is primarily responsible for the conversion of androstenedione to estradiol during follicular development?
Theca interna cells
Theca externa cells
Granulosa cells
Interstitial cells
During oogenesis, the first meiotic division is completed at which specific stage?
During fetal development
At puberty
Just prior to ovulation
After fertilization
Which ovarian structure is DIRECTLY responsible for secreting inhibin?
Theca interna cells
Corpus luteum and granulosa cells
Primary oocytes
Interstitial cells
What is the primary function of the zona pellucida?
Nourishes the developing oocyte
Facilitates sperm binding and acrosomal reaction
Triggers ovulation
Forms the corpus luteum
Hilus cells within the ovary are analogous to which testicular cell type in terms of hormone production?
Sertoli cells
Spermatogonia
Leydig cells
Germ cells
The hormone responsible for the 'fight-or-flight' response is:
Thyroxine
Adrenaline
Insulin
Glucagon
Which gland produces thyroxine, a hormone that regulates metabolism?
Pituitary gland
Thyroid gland
Pancreas
Adrenal gland
