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Repro > 4.1 the duct system & spermatic cord (workbook) > Flashcards

4.1 the duct system & spermatic cord (workbook) Flashcards

1
Q

where do sperms leave the testis via?

A

the interconnected passageways (rete testis) in the mediastinum

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2
Q

where do sperms enter after leaving the testis?

A

a series of coiled efferent ductules (ductuli efferentes)

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3
Q

where do efferent ducts emerge?

A

on the posterior surface of the testis

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4
Q

what do the efferent ducts join to form?

A

a long, single convoluted tubule (ductus epididymis)

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5
Q

what is ductus epididymis continuous with?

A

a straight, thick-walled ductus deferens (vas deferens) that forms part of the spermatic cord

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6
Q

anatomically, what does the epididymis consist of?

A

head (caput)
body (corpus)
tail (caudal)

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7
Q

where is the epididymis located?

A

on the superior and posterolateral surface of the testis

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8
Q

what is the main function of the epididymis?

A

to transport sperm, maturation and storage

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9
Q

during the passage through epididymis, what do the sperms undergo?

A

structural maturation and become motile - the capabilities that are essential for successful fertilisation

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10
Q

where is sperm stored after epididymis?

A

in the tail segment until ejaculation

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11
Q

what is the ductus deferens (vas deferens)?

A

a straight muscular tube that emerges from the cauda epididymis

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12
Q

what is the ductus deferens (vas deferens) contained within?

A

the spermatic cord

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13
Q

what is the main function of ductus deferens?

A

transport the sperms rapidly to the prostatic urethra

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14
Q

what is the terminal portion of the ductus deferens called?

A

ampulla

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15
Q

what forms the ejaculatory duct?

A

the terminal portion (ampulla) of ductus deferens and duct of the seminal vesicle

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16
Q

where does the ejaculatory duct open into?

A

prostatic urethra

17
Q

what allows rapid contraction of ductus deferens?

A

rich autonomic innervation of SM fibres of the ductus deferens

18
Q

what does rapid contraction of ductus deferens lead to?

A

propel tube’s contents towards ejaculatory ducts

19
Q

what happens during ejaculation?

A

the ejaculatory duct and the duct of the seminal vesicle dilate to facilitate the entry of the sperms and seminal gland secretions into the prostatic urethra

20
Q

what is the ductus epididymis lined by?

A

tall, pseudostratified columnar epithelium

21
Q

on the inner surface of the basement membrane, what forms?

A

small basal cells form a discontinuous layer

22
Q

what do the tall columnar cells of the ductus epididymis have?

A

tufts of non-motile cytoplasmic processes called stereocilia projecting into the lumen

23
Q

where is the ductus epididymis?

A

distal end of epididymis, but before ductus deferens (vas deferens)

24
Q

what is contained near the lumen of the ductus epididymis (where the stereocilia project)?

A

cytoplasm of tall cells contains occasionally dark-staining granules

25
Q

what is the basement membrane of the ductus epididymis surrounded on the outside by?

A

a highly developed network of capillaries and a circular layer of SM fibres

26
Q

what is in a section of the spermatic cord?

A

the ductus deferens is a thick, muscular tube

27
Q

what surrounds the spermatic cord?

A

SM coat

28
Q

what does the SM coat of the spermatic cord consist of?

A

inner and outer longitudinal layers and intermediate circular layer of muscle

29
Q

what is the epithelium lining of the spermatic cord?

A

pseudostratified, columnar and the cells usually have stereocilia

30
Q

where is the epithelium of the spermatic cord?

A

lies on a thin lamina propria containing a large number of elastic fibres

31
Q

what is the result of large number of elastic fibres of the epithelium of spermatic cord? (fixed preparations)

A

in fixed preparations, the mucous membrane is thrown into numerous folds

32
Q

what surrounds the ductus deferens?

A

a collection of small veins (pampiniform plexus)

33
Q

what is the pampiniform plexus? (in terms of spermatic cord)

A

most bulky constituents of the spermatic cord

34
Q

what is also present within the spermatic cord aside from pampiniform plexus?

A

numerous arteries, lymphatic vessels and nerves

35
Q

what is the spermatic cord enclosed by?

A

a discontinuous layer of longitudinally-oriented strands of straited muscle - cremaster muscle

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