Which gland contributes to pubic and axillary hair development in boys?
A) Thyroid gland
B) Adrenal glands
C) Pancreas
D) Pineal gland
📖 شرح: Adrenal androgens promote pubic and axillary hair growth.
الإجابة الصحيحة: B
Which event marks reproductive maturity in boys?
A) Voice deepening
B) Appearance of facial hair
C) First ejaculation
D) Growth spurt
📖 شرح: First ejaculation indicates reproductive capability.
الإجابة الصحيحة: C
Which hormone initiates puberty in girls?
A) GnRH
B) TSH
C) Insulin
D) Cortisol
📖 شرح: GnRH triggers the onset of puberty.
الإجابة الصحيحة: A
Which physical change is typically the first sign of puberty in girls?
A) Menarche
B) Breast budding (thelarche)
C) Pubic hair growth
D) Growth spurt
📖 شرح: Breast budding is usually the first sign of female puberty.
الإجابة الصحيحة: B
Which hormone is primarily responsible for breast development?
A) Progesterone
B) Estrogen
C) Testosterone
D) Prolactin
📖 شرح: Estrogen stimulates breast tissue growth.
الإجابة الصحيحة: B
Which event marks reproductive maturity in girls?
A) Thelarche
B) Adrenarche
C) Menarche
D) Growth spurt
📖 شرح: Menarche indicates reproductive capability.
الإجابة الصحيحة: C
Which gland produces estrogen during puberty?
A) Adrenal cortex
B) Thyroid gland
C) Ovaries
D) Pituitary gland
📖 شرح: The ovaries produce estrogen.
الإجابة الصحيحة: C
Which hormone stimulates ovarian follicle development?
A) LH
B) FSH
C) Prolactin
D) ACTH
📖 شرح: FSH promotes follicular growth.
الإجابة الصحيحة: B
Which change is associated with rising estrogen levels?
A) Deepening of the voice
B) Increased muscle mass
C) Widening of hips
D) Facial hair growth
📖 شرح: Estrogen causes widening of the pelvis.
الإجابة الصحيحة: C
Which hormone triggers ovulation during puberty?
A) TSH
B) LH surge
C) Prolactin
D) Oxytocin
📖 شرح: An LH surge triggers ovulation.
الإجابة الصحيحة: B
Which structure produces progesterone after ovulation?
A) Graafian follicle
B) Corpus luteum
C) Endometrium
D) Cervix
📖 شرح: The corpus luteum secretes progesterone.
الإجابة الصحيحة: B
Which factor contributes to pubic and axillary hair growth in girls?
A) Estrogen
B) Adrenal androgens
C) Progesterone
D) Thyroxine
📖 شرح: Adrenal androgens stimulate pubic and axillary hair growth.
الإجابة الصحيحة: B
Which hormone stimulates testosterone production in males?
A) FSH
B) LH
C) Prolactin
D) TSH
📖 شرح: LH stimulates Leydig cells to produce testosterone.
الإجابة الصحيحة: B
Which cells support spermatogenesis in the seminiferous tubules?
A) Leydig cells
B) Sertoli cells
C) Theca cells
D) Macrophages
📖 شرح: Sertoli cells support and nourish developing sperm.
الإجابة الصحيحة: B
Which hormone directly stimulates spermatogenesis?
A) LH
B) FSH
C) ACTH
D) TSH
📖 شرح: FSH acts on Sertoli cells to promote spermatogenesis.
الإجابة الصحيحة: B
Which structure is responsible for sperm maturation?
A) Seminiferous tubules
B) Epididymis
C) Vas deferens
D) Prostate gland
📖 شرح: The epididymis stores and matures sperm.
الإجابة الصحيحة: B
Which hormone provides negative feedback on LH secretion?
A) Estrogen
B) Testosterone
C) Progesterone
D) Oxytocin
📖 شرح: Testosterone inhibits LH secretion via negative feedback.
الإجابة الصحيحة: B
Which gland contributes enzymes and zinc to semen?
A) Seminal vesicles
B) Prostate gland
C) Bulbourethral glands
D) Adrenal glands
📖 شرح: The prostate secretes enzyme-rich fluid.
الإجابة الصحيحة: B
Which process occurs in the seminiferous tubules?
A) Sperm storage
B) Sperm maturation
C) Sperm production
D) Semen liquefaction
📖 شرح: Spermatogenesis occurs in the seminiferous tubules.
الإجابة الصحيحة: C
Which hormone increases during puberty to stimulate male secondary sexual characteristics?
A) Prolactin
B) Testosterone
C) Insulin
D) Aldosterone
📖 شرح: Testosterone drives male secondary sexual characteristics.
الإجابة الصحيحة: B