The Reproductive System and Key Hormones

Which statement best defines the human reproductive system?

• Organs and hormones managing digestion and energy

• Organs and hormones producing sex cells and supporting offspring

• Organs and hormones regulating blood pressure and heart rate

• Organs and hormones filtering wastes and balancing fluids

Where is gonadotropin-releasing hormone (GnRH) produced and what is its primary role?

• Produced by ovaries, starts menstruation

• Produced by testes, forms sperm cells

• Produced by hypothalamus, signals pituitary to release hormones

• Produced by pituitary, triggers ovulation directly

Which outcomes are directly stimulated by follicle-stimulating hormone (FSH)? Select all that apply.

• Sperm production in males

• Egg maturation in ovarian follicles

• Testosterone release from testes

• Uterine lining shedding

Luteinizing hormone (LH) primarily causes which effects in males and females?

• In males, sperm production; in females, egg maturation

• In males, testosterone production; in females, ovulation

• In males, estrogen release; in females, menstruation

• In males, GnRH secretion; in females, implantation

Which structure initiates control of reproductive hormones before the pituitary acts?

• Cerebellum

• Hypothalamus

• Medulla oblongata

• Thyroid gland

Which statement correctly links each hormone to its source gland?

• GnRH from pituitary; FSH from ovaries; LH from testes

• GnRH from hypothalamus; FSH from pituitary; LH from pituitary

• GnRH from thyroid; FSH from hypothalamus; LH from adrenal

• GnRH from ovaries; FSH from testes; LH from pancreas

Which endocrine sequence best describes testosterone regulation via negative feedback in males?

• GnRH stimulates LH and FSH; testosterone inhibits all three

• FSH stimulates GnRH; testosterone enhances LH secretion

• LH inhibits GnRH; testosterone increases FSH release

• Testosterone triggers GnRH; LH and FSH suppress testes

What is the primary site of testosterone production in the male body?

• Testes

• Pituitary

• Hypothalamus

• Prostate

Which change during puberty is most directly linked to testosterone?

• Deepening of the voice

• Ovulation initiation

• Uterine lining thickening

• Milk production start

Select all functions of testosterone listed for males.

• Maintain sperm production

• Increase muscle and bone mass

• Cause breast development

• Support sex drive