Anatomy & Physiology (6th Edition)
6th Edition
ISBN: 9780134156415
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Chapter 26, Problem 25SAQ
A man swam in a cold lake for an hour and then noticed that his scrotum was shrunken and wrinkled. His first thought was that he had lost his testicles. What had really happened?
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Students have asked these similar questions
A 20-year old man went swimming in a very cold lake for about an hour and when he got out
noticed his scrotum had shrunk and appeared wrinkled:
Select the TRUE statement/s:
OA) The scrotum shrunk to increase heat loss from the scrotum
O. B) The scrotum appeared wrinkled to pull scrotum away from the body to prevent heat loss
OC) The scrotum shrunk to pull the testes closer to the body to increase the temperature in the testes
OD) Both A and B
OE) Both B and C
(a) Which men would have a higher testicular temperature, those who wear briefs or those who wear boxer shorts? (b) Which would be more likely to cause sterility? Explain.
What could be the reason why a woman only gets her period after puberty begins?
A) Before puberty, high quantities of of corpus luteum are present
B) Before puberty, GnRH levels may be too low.
C) Before puberty, their endometrial lining is too thick.
Chapter 26 Solutions
Anatomy & Physiology (6th Edition)
Ch. 26.1 - What are the two major functions of the testes?Ch. 26.1 - Which of the tubular structures shown in Figure...Ch. 26.1 - Muscle activity and the pampiniform venous plexus...Ch. 26.2 - What is the function of the erectile tissue of the...Ch. 26.2 - Prob. 5CYUCh. 26.3 - Name the organs of the male duct system in order,...Ch. 26.3 - What are two functions of the stereocilia on the...Ch. 26.3 - Which accessory organ of the male duct system runs...Ch. 26.4 - Prob. 9CYUCh. 26.4 - What is semen?
Ch. 26.4 - Prob. 11CYUCh. 26.5 - What is erection and which division of the ANS...Ch. 26.5 - Prob. 13CYUCh. 26.6 - What is the final outcome of meiosis?Ch. 26.6 - Describe the major structural and functional...Ch. 26.6 - Prob. 16CYUCh. 26.7 - What is the HPG axis?Ch. 26.7 - Prob. 18CYUCh. 26.7 - What are three secondary sex characteristics...Ch. 26.8 - Briefly, what are the internal genitalia of a...Ch. 26.8 - What two roles do the ovaries assume?Ch. 26.8 - Prob. 22CYUCh. 26.9 - Prob. 23CYUCh. 26.9 - Oocytes are ovulated into the peritoneal cavity...Ch. 26.9 - What portion of the female duct system is the...Ch. 26.10 - What is the female homologue of the bulbo-urethral...Ch. 26.10 - Cite similarities and differences between the...Ch. 26.11 - Developmentally, mammary glands are modifications...Ch. 26.11 - From what cell types does breast cancer usually...Ch. 26.12 - How do the haploid cells arising from oogenesis...Ch. 26.13 - How do identical twins differ developmentally from...Ch. 26.13 - What occurs in the luteal phase of the ovarian...Ch. 26.14 - Which hormone plays an important role in letting...Ch. 26.14 - Which hormone(s) prompt follicle growth? Which...Ch. 26.14 - Which gonadal hormone exerts positive feedback on...Ch. 26.14 - Which gonadal hormone causes the secondary sex...Ch. 26.14 - MAKING connections Youve studied both bone growth...Ch. 26.15 - Prob. 38CYUCh. 26.16 - Which pathogen is most associated with cervical...Ch. 26.16 - What is the most common bacterial STI in the...Ch. 26 - The structures that draw an ovulated oocyte into...Ch. 26 - The usual site of embryo implantation is (a) the...Ch. 26 - The male homologue of the female clitoris is (a)...Ch. 26 - Which of the following is correct relative to...Ch. 26 - Secondary sex characteristics are (a) present in...Ch. 26 - Which of the following produces the male sex...Ch. 26 - Which will occur as a result of nondescent of the...Ch. 26 - The normal diploid number of human chromosomes is...Ch. 26 - Relative to differences between mitosis and...Ch. 26 - Match the key choices with the descriptive phrases...Ch. 26 - The menstrual cycle can be divided into three...Ch. 26 - Spermatozoa are to seminiferous tubules as oocytes...Ch. 26 - Which of the following does not add a secretion...Ch. 26 - The corpus luteum is formed at the site of (a)...Ch. 26 - The sex of a child is determined by (a) the sex...Ch. 26 - FSH is to estrogens as estrogens are to (a)...Ch. 26 - Prob. 17SAQCh. 26 - Describe the major structural (and functional)...Ch. 26 - Oogenesis in the female results in one functional...Ch. 26 - Define menarche. What does it indicate?Ch. 26 - Trace the pathway of a sperm from the male testes...Ch. 26 - Prob. 22SAQCh. 26 - Both the epithelium of the vagina and the cervical...Ch. 26 - Some anatomy students were saying that the...Ch. 26 - A man swam in a cold lake for an hour and then...Ch. 26 - Prob. 1CCSCh. 26 - Prob. 2CCSCh. 26 - Prob. 3CCSCh. 26 - We are back to look in on Mr. Heyden today. Since...
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- Why is it some important for testicles to be outside the abdominal cavity and in the scrotum?arrow_forwardWhich will most likely occur if the testes do not descend into the scrotum before puberty? O A) The androgens will not be produced ○ B) Sperm will be produced but will not move into the male reproductive ducts OD) Sperm production in the seminiferous tubule cannot occur D) The blood-testis barrier will not be formed OE). All of the abovearrow_forwardWhy the temperature of scrotum is lower than that of the body?arrow_forward
- Erection of the penis results from a) dilation of the arteries in the penis c) a parasympathetic activation of the prostatic gland d) vasoconstriction of the arteries in the penis e) a sympathetic reflexarrow_forwardFollicle cells left behind after ovulation A)are shed during menstruation. B)become the corpus luteum, which secretes steroid hormones. C)become the placenta, which secretes human chorionic gonadotropin. D)become the corpus luteum, which secretes luteinizing hormone.arrow_forwardFailure of testes to descend into scrotal sacs leads to sterility. Why?arrow_forward
- Why does the patient have light menstrual periods that have now stopped? Choose all the INCORRECT answer(s) from the options below a) There would be no development of follicles during the follicular phase of the ovarian cycle b) The endometrial lining will continue to increase in thickness c) The cells that produce FSH and LH are located in the hypothalamus and not in the pituitary gland. d) The levels of oestrogen would be higher than normal during the follicular phase of the ovarian cycle. e) The tumor would only affect the cells the produce the hormone that stimulates milk secretion.arrow_forwardThe left testis of a newborn baby failed to descend into his scrotal sac.For some reason, the condition was not treated, and the testis remainedin that position until after puberty. Select the observation consistentwith the fate of the left testis after puberty.(1) normal testosterone secretion(2) no interstitial cells in the testis(3) no sustentacular cells in the testis(4) no spermatogonia in the testis(5) increased number of interstitial cells(6) normal LH secretiona. 1 b. 1,2,3,4 c. 1,2,3,6 d. 1,4,6 e. 4,6arrow_forwardWhat is the male homologue to the female greater vestibular glands a. Seminal glands b. Prostate gland c. Bulbourethral glands d. Ejaculationarrow_forward
- In men, LH (luteinizing hormone) stimulates ... a) ... spermatogenesis. b) ... the development of the sperm ducts. c) ... the production of testosterone.arrow_forward1. A mature follicle releases an ovum in response to a surge inA) follicle-stimulating hormone.B) luteinizing hormone.C) estrogen.D) progesterone.arrow_forwardWhat causes an erection in the male penis? a) Dilation (opening) of the smooth muscles around the veins leaving the penis and constriction of the smooth muscles around the arteries entering the penis creates engorgement of spongy tissue in the penis with blood. O b) Dilation (opening) of the smooth muscles around the arteries entering the penis and constriction (closing) of the smooth muscles around the veins leaving the penis creates engorgement of spongy tissue in the penis with blood. c) Muscle contractions of the testes d) Muscle contractions along the urethraarrow_forward
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