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Which of the following statements is/are true regarding gender?
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The sex of a child is determined _________blank.
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Unit 5 Chapter 27
Homework
| Question | Answer |
|---|---|
| Which of the following statements is/are true regarding gender? | The SRY gene is found on the Y chromosome. The development of a female results from the absence of androgens, not the presence of estrogens. Human females lack a Y chromosome. |
| The sex of a child is determined _________blank. | at conception at fertilization by the sperm cell by an X or a Y sex chromosome |
| Which of the following is a change in the male body during puberty? | Increase in teste and scrotum size Hair growth in the axillary region, pubic region, and face Increased rate of spermatogenesis Increased levels of FSH and LH in the beginning of puberty Increased testosterone levels resulting in increased libido |
| Read each of the structures or characteristics below. Then, click and drag each into the appropriate category to determine whether it describes a primary sex organ, secondary sex organ, or secondary sex characteristic. | check targets |
| Read each of the descriptions below. Then, click and drag each into the appropriate category to identify the stage of the male sexual response to which it pertains. | Check targets |
| Categorize the following male reproductive structures based on if they are part of the system ducts or accessory glands. | Check Targets |
| The secretions of the male reproductive tract originate in the ________ , where __________ cells are produced. | testes; sperm |
| The fluid from the _________ joins the sperm from the ______ at the ejaculatory duct. | seminal vesicles; ductus deferens |
| The second largest producer of seminal volume, the _______ gland, surrounds the urethra and the ejaculatory duct. | prostate |
| Contributing about 5% of the overall seminal volume, the ________ glands are involved with pre-ejaculatory secretions for lubrication and preparation of the urethra for the passage of semen. | bulbourethral |
| ____________ from the hypothalamus stimulates the secretion of FSH and LH. | GnRH |
| __________ stimulates the secretion of androgen-binding protein. | FSH |
| __________ stimulates testosterone secretion. | LH |
| __________ , in the presence of ABP, stimulates spermatogenesis. | Testosterone |
| Testosterone stimulates the development of __________ and chest hair. | a beard |
| ____________ prevents FSH from stimulating further spermatogenesis. | Inhibin |
| Match each hormone with the description of what would happen if it was absent in a pubescent male. FSH and LH would not be secreted by the anterior pituitary. | GnRH |
| Match each hormone with the description of what would happen if it was absent in a pubescent male. Testosterone secretion would not occur. | LH |
| Match each hormone with the description of what would happen if it was absent in a pubescent male. Spermatogenesis would not occur due to the absence of androgen-binding protein. | FSH |
| Match each hormone with the description of what would happen if it was absent in a pubescent male. A person would experience a loss of sex drive | Testosterone |
| Match each hormone with the description of what would happen if it was absent in a pubescent male. Spermatogenesis would occur in excess. | Inhibin |
| After around age 40, a male's _________ levels decline slowly about 1% a year. | testosterone |
| Due to the decline in testosterone levels, the ________ also declines. | sperm count |
| While fertility may decrease due to a decreased number of sperm, there is also an increase in the frequency of ________ . | FSH |
| Occuring in 50% of men over the age of 80, _________ makes it difficult to engage in sexual intercourse. | erectile dysfunction |
| The ________ contains enzymes that penetrate the egg for fertilization. | acrosome |
| The haploid _______ contains the sperm's DNA which it intends to donate to a zygote. | nucleus |
| The _______ is full of mitochondria that synthesize ATP, so the sperm cell can swim. | midpiece |
| The ________ of the tail contains an axoneme and supporting fibers. | principal piece |
| The _________ of the tail is the most distal portion of the flagellum. | endpiece |
| A young female going through puberty comes to see you because they are concerned they haven't had their period yet. An ultrasound reveals the absence of a uterus but the presence of abdominal testes. What do you conclude? | This individual has XY chromosomes but has androgen insensitivity syndrome. |
| In humans, when do the secondary sexual characteristics first appear? | At puberty |
| The _________blank cell carries the chromosome that determines the sex of the zygote. | sperm |
| Which structure receives sperm from the efferent ductules and sends it on to the vas deferens? | Epididymis |
| What do interstitial endocrine cells produce? | Testosterone |
| Which male accessory structure is inferior to the urinary bladder and surrounds the superior portion of the male urethra? | Prostate |
| Where is gonadotropin-releasing hormone produced? | Hypothalamus |
| After meiosis in the male primary spermatocyte, the resultant secondary spermatocytes are genetically different than the body's somatic cells. The immune system is inclined to attack this 'foreign' cell. Which of the following contributes to the preventio | The blood-testis-barrier |
| What is the process of sperm production called? | Spermatogenesis |
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