Podcast
Questions and Answers
Which hormone is released from the hypothalamus?
Which hormone is released from the hypothalamus?
- Inhibin
- LH
- GnRH (correct)
- FSH
What is the relationship between the hypothalamus, anterior pituitary, and gonads called?
What is the relationship between the hypothalamus, anterior pituitary, and gonads called?
- The androgen axis
- The HPG axis (correct)
- The testosterone network
- The estrogen loop
From which of the following is inhibin released?
From which of the following is inhibin released?
- Gonads (correct)
- Target cells
- Hypothalamus
- Anterior pituitary
What type of hormone is testosterone?
What type of hormone is testosterone?
Which hormone stimulates the production of sperm?
Which hormone stimulates the production of sperm?
What is a function of luteinizing hormone (LH) and follicle stimulating hormone (FSH)?
What is a function of luteinizing hormone (LH) and follicle stimulating hormone (FSH)?
What is the role of inhibin?
What is the role of inhibin?
When are levels of testosterone relatively high in males?
When are levels of testosterone relatively high in males?
What is one of the effects of testosterone?
What is one of the effects of testosterone?
What happens to testosterone levels until puberty?
What happens to testosterone levels until puberty?
Which of the following effects does testosterone have on the larynx?
Which of the following effects does testosterone have on the larynx?
What is the role of GnRH in the male reproductive system?
What is the role of GnRH in the male reproductive system?
Which of the following happens because of testosterone?
Which of the following happens because of testosterone?
What secondary sex characteristic does testosterone influence?
What secondary sex characteristic does testosterone influence?
What is the effect of testosterone on skin?
What is the effect of testosterone on skin?
What is the primary target of LH and FSH?
What is the primary target of LH and FSH?
What is the origin of hormonal production?
What is the origin of hormonal production?
What is the function of the HPG axis?
What is the function of the HPG axis?
How does inhibin affect the release of FSH?
How does inhibin affect the release of FSH?
Which of the following is considered a secondary sex characteristic influenced by testosterone?
Which of the following is considered a secondary sex characteristic influenced by testosterone?
Flashcards
Hormone regulation in reproduction
Hormone regulation in reproduction
Hormonal interactions between the hypothalamus, anterior pituitary, and gonads regulate the production of gametes and sex hormones.
HPG axis
HPG axis
The relationship between the hypothalamus, anterior pituitary, and gonads.
GnRH
GnRH
Gonadotropin-releasing hormone; released from the hypothalamus.
LH and FSH
LH and FSH
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Inhibin
Inhibin
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Prenatal testosterone importance
Prenatal testosterone importance
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Testosterone
Testosterone
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Spermatogenesis
Spermatogenesis
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Testosterone affects on voice
Testosterone affects on voice
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Hair growth and testosterone
Hair growth and testosterone
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Bones and testosterone
Bones and testosterone
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Study Notes
Hormone Secretion
- In both males and females, hormonal interactions between the hypothalamus, anterior pituitary, and gonads regulate the production of gametes and sex hormones
- The relationship between these components is called the hypothalamic-pituitary-gonadal (HPG) axis
HPG Axis
- Gonadotropin-releasing hormone (GnRH) is released from the hypothalamus
- Luteinizing hormone (LH) and follicle-stimulating hormone (FSH) are released from the anterior pituitary
- Sex hormones are released from the gonads
- Inhibin released from the gonads creates a negative feedback loop to inhibit the HPG axis
Development of the Male Reproductive System
- Prenatal secretion of testosterone is needed
- The fetus has relatively high testosterone levels for a few months
- Testosterone levels are very low until puberty
What is Testosterone?
- Testosterone is a steroid hormone made from cholesterol
- Once puberty begins, testosterone influences spermatogenesis, and the growth of ducts, glands, and the penis
- Testosterone is also involved in secondary sex characteristics
- These include the deepening of the voice via changes to the larynx
- Pubic, axillary, and facial hair
- Hair growth on the chest and other body areas
- Thicker, oilier skin, which can increase acne
- Increased size and density of bones
- Increased size and mass of skeletal muscles
- Testosterone boosts basal metabolic rate and drives male sex drive
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