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A&P II > Packet 32 > Flashcards

Packet 32 Flashcards

1
Q

Passageway for semen & urine
Body composed of three erectile tissue masses filled with blood sinuses
Composed of bulb, crura, body & glans penis

A

Penis

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2
Q

Bulb of penis or base of corpus spongiosum enclosed by

Crura of penis or ends of corpora cavernosa enclosed by

A

bulbospongiosus muscle

ischiocavernosus muscle

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3
Q

sexual stimulation dilates the arteries supplying the penis

blood enters the penis compressing the veins so that the blood is trapped.

parasympathetic reflex causes erection

A

Erection

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4
Q

muscle contractions close sphincter at base of bladder and move fluids through ductus deferens, seminal vesicles, & ejaculatory ducts

ischiocavernous & bulbospongiosus complete the job

A

Ejaculation

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5
Q

Enlarged distal end of corpus spongiosum
External urethral orifice is small slit
Covered by loosely fitting prepuce or foreskin

A

Glans Penis

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6
Q

Ovaries produce 2nd oocytes & hormones
Uterine tubes transport fertilized ova
Uterus where fetal development occurs
Vagina & external genitalia constitute the vulva
Mammary glands produce milk

A

Female reproductive system

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7
Q

Pair of organs, size of unshelled almonds found in upper pelvic region

A

ovary

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8
Q

capsuleof dense connective tissue

A

tunica albuginea

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9
Q

region just deep totunica, contains follicles

A

cortex

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10
Q

is deeper regioncomposed of connective tissue, blood vessels & lymphatics

A

medulla

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11
Q

is simple epithelial covering over the ovary

A

germinal epithelium

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12
Q

Stages of follicular development

A 
primordial 
primary
secondary
graafian 
ovulation
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13
Q

ovulation wound

fills in with hormone secreting cells

A

corpus luteum

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14
Q

white scar left after corpus luteum is not needed

A

corpus albicans

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15
Q

Germ cells from yolk sac migrate to ovary & become oogonia
As a fetus, oogonia divide to produce millions by mitosis but most degenerate (atresia)
Some develop into primary oocytes & stop in prophase stage of meiosis I
200,000 to 2 million present at birth
40,000 remain at puberty but only 400 mature during a woman’s life
Each month, hormones cause meiosis I to resume in several follicles so that meiosis II is reached by ovulation
Penetration by the sperm causes the final stages of meiosis to occur

A

life history of oogonia

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16
Q

Narrow, 4 inch tube extends from ovary to uterus
infundibulum is open, funnel-shaped portion near the ovary
fimbriae are moving finger-like processes
ampulla is central region of tube
isthmus is narrowest portion joins uterus

A

uterine or fallopian tube

17
Q

3 layers of uterine tube

A

mucosa
muscularis
serosa

18
Q

ciliated columnar epithelium with secretory cells provide nutrients & cilia move along ovum

A

mucosa

19
Q

circular & longitudinal smooth muscle

peristalsis helps move ovum down to the uterus

A

muscularis

20
Q

outer serous membrane

A

serosa

21
Q

function of uterine tube

A

fimbriae sweep oocyte into tube,

cilia & peristalsis move it along,

sperm reaches oocyte in ampulla,

fertilization occurs within 24 hours after ovulation &

zygote reaches uterus about 7 days after ovulation

22
Q

Site of menstruation& development of fetus
Description
3 inches long by 2 in. wide and 1 in. thick
subdivided into fundus,body, isthmus & cervix
interiorly contains uterine cavity accessed by cervical canal (internal & external os)

A

anatomy of uterus

23
Q

simple columnar epithelium
stroma of connective tissue and endometrial glands
–stratum functionalis
–stratum basalis

A

endometrium

24
Q

shed during menstruation

A

stratum functionalis

25
Q

replaces stratum functionalis each month

A

stratum basalis

26
Q

3 layers of smooth muscle

A

myometrium

27
Q

visceral peritoneum

A

perimetrium

28
Q

supply the myometrium

A

Uterine arteries branch as arcuate arteries and radial arteries

29
Q

spiral arteries supply the

–their constriction due to hormonal changes starts menstrual cycle

A

spiral arteries

30
Q

Passageway for birth, menstrual flow & intercourse

  • 4 inch long fibromuscular organ ending at cervix
  • lies between urinary bladder and rectum
  • orifice partially closed with membrane (hymen)
A

vagina

31
Q

stratified squamous epithelium & areolar connective tissue
large stores of glycogen breakdown to produce acidic pH

is smooth muscle allows considerable stretch

loose connective tissue that binds it to other organs

A

mucosal layer

muscularis layer

adventitia layer

32
Q

fatty pad over the pubic symphysis

folds of skin encircling vestibule where find urethral and vaginal openings

A

mons pubis

labia majora and minora

33
Q

small mass of erectile tissue

masses of erectile tissue just deep to the labia on either side of the vaginal orifice

A

clitoris

bulb of vestibule

A&P II (30 decks)

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