Adolescence Development Chapter 2

Which of the following best describes the term puberty?

• The stage when adolescence begins emotionally

• A set of physiological, anatomical, and functional changes preparing the body for sexual reproduction

• The transition from early to late childhood

• The cultural rituals marking adulthood

What hormone signals the hypothalamus to initiate puberty once a threshold of body fat is reached?

• Cortisol

• Leptin

• Testosterone

• Estradiol

The hypothalamus releases which hormone to stimulate the pituitary gland during puberty?

• Luteinizing hormone (LH)

• Gonadotropin-releasing hormone (GnRH)

• Estradiol

• Testosterone

What is the main function of gonadotropins released by the pituitary gland?

• Regulating heart rate

• Stimulating hair growth

• Initiating gamete production

• Increasing muscle strength

Which sex hormone is most important in pubertal development for boys?

• Testosterone

• Estradiol

• Leptin

• Progesterone

The feedback loop in the endocrine system functions similarly to:

• A thermostat

• A pendulum

• A thermometer

• A battery

During the adolescent growth spurt, peak height velocity averages about:

• 2 inches/year for both sexes

• 3.5 inches/year for girls and 4.1 inches/year for boys

• 5 inches/year for girls and 6 inches/year for boys

• 1 inch/year

The first menstrual period is known as:

• Menarche

• Spermarche

• Ovulation

• Menopause

How many sperm are typically produced per ejaculation after spermarche?

• About 1 million

• 10–20 million

• 100–500 million

• 1 billion

Which of the following is a secondary sex characteristic?

• Ovum release

• Breast development

• Growth of penis

• Sperm production