Jeff Is 13 Years Old and Has Recently Noticed Some

question 152

Multiple Choice

Jeff is 13 years old and has recently noticed some remarkable changes in himself.Over the past few months his voice has started to change,growing deeper.He has begun to grow pubic hair,as well as the beginnings of a facial beard.He is also filling out,with his muscles developing rapidly.These changes in Jeff are probably due to the action of the

• A)gonads.
• B)thyroid gland.
• C)pineal gland.
• D)adrenal gland.

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Definitions:

Alkaline Urine

Urine with a high pH level, often a sign of certain dietary habits or health conditions.

Luteinizing Hormone

A hormone produced by the pituitary gland that plays a key role in the reproductive system, triggering ovulation in females and testosterone production in males.

Ureter

A pair of muscular tubes that transport urine from the kidneys to the bladder in the urinary system.

Kidney

Organ of the vertebrate urinary system that filters and adjusts the composition of blood, and produces urine.