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BNNS502 exam 2 Study Guide with Complete Solutions

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  • 2024/2025
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BNNS502 exam 2 Study Guide with Complete Solutions describe the location and function of the scrotum - state the specific function of the cremaster & dartos muscles - Ans:-location - outside of the pelvic cavity at the root of the penis function - regulate the temperature of the testes cremas...

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  • October 23, 2024
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  • 2024/2025
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  • 2024/2025
  • 2024/2025
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BNNS502 exam 2 Study Guide with
Complete Solutions

describe the location and function of the scrotum


- state the specific function of the cremaster & dartos muscles - Ans:✔✔-location - outside of the pelvic

cavity at the root of the penis


function - regulate the temperature of the testes


cremaster - is a muscle that pulls testes closer to the pelvic floor (to the warmth of the body) in cold

conditions


dartos muscles - are muscles that contracts & wrinkles the scrotum (decreasing surface area for heat

loss) in cold conditions


state the 3 functions of the Sustentacular (Sertoli) cells - Ans:✔✔-1. supports & provides nutrients for

cells while they undergo meiosis & develop into sperm


2. produce testicular fluid for transport of sperm


3. control release of sperm into lumen of the seminiferous tubule



Page 1/30

, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




define spermatogenesis (include the specific cells) - Ans:✔✔-definition - the formation of sperm by

meiosis


spermatogenic cells - produce sperm cells


sustentacular cells - nourish developing sperm


interstitial cells - secrete testosterone


describe the specific functions of the acrosome, mitochondria & tail of the sperm cell - Ans:✔✔-

acrosome - cap-like vesicle containing enzymes to help sperm penetrate the secondary oocyte


midpiece - contains mitochondria which provide energy so the tail can propel the sperm


tail - propels the sperm


name the hormones involved in spermatogenesis beginning from the hypothalamus


- state 3 functions of testosterone - Ans:✔✔-hypothalamus - increases secretion of GnRH


GnRH - stimulates anterior pituitary to secrete LH & FSH


LH - stimulates interstitial cells to secrete testosterone


FSH - stimulates spermatogenesis




Page 2/30

, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




testosterone - controls the growth, development, functioning, & maintenance of sex organs, stimulates

development of male secondary sex characteristics during puberty, & stimulates sperm maturation, bone

growth, & protein synthesis


describe the location of and 3 functions of the epididymis - Ans:✔✔-1. site for sperm to mature & gain

mobility


2. stores sperm


3. propels sperm into ductus deferens


state the function of the Ductus (vas) deferens) - Ans:✔✔-transports sperm from the epididymis to the

urethra by peristalsis


name the structures located in the spermatic cord - Ans:✔✔-testicular blood vessels, autonomic nerves,

lymphatic vessels, ductus deferens, & cremaster muscle


describe the location and state the function of; the seminal vesicles, the ejaculatory duct, the prostate

gland, and the bulbourethral glands - Ans:✔✔-seminal vesicles - along the back of the bladder, add

alkaline viscous fluid to sperm


ejaculatory duct - superior aspect of the prostate gland, ejects sperm & seminal vesicle secretions into

the urethra




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