A&PII Lab 16: The Male Reproductive System Flashcards Preview

Pre-Pharm > A&PII Lab 16: The Male Reproductive System > Flashcards

Flashcards in A&PII Lab 16: The Male Reproductive System Deck (48)
Loading flashcards...
1
Q

Testes

A

paired testicles; sperm-producing organs

2
Q

Male gonads

A

testes

3
Q

Scrotum

A

external sac containing testes

4
Q

Dartos muscle

A

smooth muscle under the scrotum; causes the scrotal skin to wrinkle when contracting

5
Q

Tunica vaginalis

A

capsule of connective tissue that envelops each testis, providing some support and protection

6
Q

Spermatic cord

A

cord of tissue attached to the tunica vaginalis; includes blood vessels, nerves, and the ductus deferens; extends upward into the body cavity

7
Q

Cremaster muscle

A

narrow continuation of the internal oblique muscles that surrounds the spermatic cord; contraction pulls the testis closer to the body wall for warmth when the exterior temp drops, and relaxation drops the testis to fall away when the exterior temp rises

8
Q

Tunica albuginea

A

thin capsule of fibrous connective tissue

9
Q

Seminiferous tubules

A

tiny tubes where sperm is produced

10
Q

Lobules

A

the seminiferous tubules are organized into these small compartments; formed by extensions of the tunica albuginea

11
Q

Straight tubules

A

from the seminiferous tubules, sperm cells pass into these tubes, which converge into a network of interconnecting tubes (rete testis)

12
Q

Rete testis

A

network of interconnecting tubes converged from straight tubules

13
Q

Efferent ducts

A

from the rete testis, sperm cells pass to these ducts

14
Q

Epididymis

A

structure that begins the male duct network; narrow, curved organ extending along the posterior side of the testis; consists of a single duct that winds through supportive connective tissue and blood vessels; site of sperm maturation and storage; has a smooth muscle wall that provides peristaltic contractions that move sperm into the next duct (ductus deferens)

15
Q

Ductus deferens (vas deferens)

A

thicker than the epididymis (abundance of smooth muscle – contracts to move sperm through by peristalsis); rises from its origin at the tail (inferior) end of the epididymis to join other parts of the spermatic cord

16
Q

Inguinal canals

A

spermatic cord enters the pelvic cavity through these openings in the anterior wall

17
Q

Ampulla

A

behind the urinary bladder, the ductus deferens broadens to form this structure, which joins the seminal vesicle duct to form the short ejaculatory duct

18
Q

Ejaculatory duct

A

2 short ducts that extend medially until they unite with the urethra within the soft prostate gland (inferior to the bladder)

19
Q

Prostatic urethra

A

1st segment of the male urethra

20
Q

Internal urethral orifice

A

prostatic urethra extends from this through the prostate gland

21
Q

Membranous urethra

A

as the urethra emerges from the prostate gland, this 2nd segment begins

22
Q

Spongy (penile) urethra

A

final segment of the male urethra; at the base of the penis

23
Q

External urethral orifice

A

the male urethra’s opening to the exterior

24
Q

Seminal fluid (semen)

A

when sperm cells are included in the mixture of water, buffers, and nutrients to support/encourage sperm motility and survival

25
Q

Seminal vesicles

A

pair of glands located against the posterior wall of the urinary bladder near the terminal end of the ductus deferens (the ampulla)

26
Q

Seminal vesicle ducts

A

seminal vesicles release their product into these structures, which unite with a ductus deferens on each side to form the short ejaculatory duct

27
Q

Prostate gland

A

walnut-sized organ that encircles the urethra as it emerges from the urinary bladder; secretes a milky product containing numerous protein-digesting enzymes into the prostatic urethra by way of several small ducts

28
Q

Bulbourethral (Cowper’s) glands

A

pair of small, pea-shaped glands located on either side of the membranous urethra embedded within the urogenital diaphragm; produce an alkaline mucus which neutralizes acidic vaginal fluids and lubricates the spongy urethra

29
Q

scrotum

A

skin-covered sac that houses the testes

30
Q

Penis

A

external organ the conveys semen into the female vagina during sexual intercourse

31
Q

Coitus

A

sexual intercourse

32
Q

Root

A

part of the penis extending from the urogenital diaphragm to the pelvic wall

33
Q

Shaft

A

part which forms the exterior body of the penis

34
Q

Glans penis

A

enlarged distal end of the penis

35
Q

Prepuce

A

foreskin

36
Q

Corpora cavernosa

A

paired posterior cylinders within the penis; 2 of 3 elongated cylinders of erectile tissue

37
Q

Corpus spongiosum

A

single anterior cylinder of erectile tissue

38
Q

External urethral orifice

A

the spongy urethra opens at this point to the exterior

39
Q

Spermatogenesis

A

process of sperm production

40
Q

Spermatogonium

A

formation of 4 haploid sperm from a single diploid

41
Q

Primary spermatocytes

A

new haploid cells formed by meiotic divisions

42
Q

Spermatids

A

develop from primary spermatocytes

43
Q

Spermiogenesis

A

process of spermatids changing in shape

44
Q

Head

A

top of a normal sperm cell

45
Q

Acrosome

A

caps the head of a sperm cell

46
Q

Midpiece

A

part of a sperm under the head, contains mitochondria

47
Q

Tail

A

flagellum of a sperm; for propulsion

48
Q

Interstitial cells

A

cells of Leydig; located between the seminiferous tubules; secrete testosterone

Decks in Pre-Pharm Class (182):