lab 11 Flashcards

1
Q

testes

  • aka
  • function
  • what are each testes covered by
A
  • male gonads
  • produces male gametes and secrete testosterone
  • tunica albuginea
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2
Q

seminiferous tubules

  • what happens here
  • where are the immature and mature cells located
  • contains
A

where spermatogenesis or sperm production occurs

  • mature cells: near lumen; immature: near edge
  • sertoli or sustentacular cells
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3
Q

edge of cells and inward

A

spermatogonia, primary spermatocytes, secondary spermatocytes, spermatids and spermatozoa

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4
Q

sertoli or sustentacular cells

-functions

A
  1. maintains blood testis barrier

2. aid in sperm nutrition and secrete inhibin and androgen binding protein

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5
Q

interstitial cells of leydig

  • location
  • definition
A
  • between seminiferous tubules

- secrete testosterone

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6
Q

sperm

  • head
  • middle piece
  • tail
A
  • contains the nucleus and acrosomal cap
  • contains mitochodria
  • flagellum for locomotion
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7
Q

epididymis

A

where sperm are stored and undergo maturation

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8
Q

spermatic cord

  • surrounded by
  • contains
A
  • CT

- testicular artery, vein, nerve, lymphatics and vas deferens

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9
Q

male urethra

- 3 parts

A
  • prostatic
  • membraneous
  • spongy
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10
Q

male accessory sex glands

  • secretes
  • 3
A
  • seminal fluid into the ejaculatory duct and urethra
    1. seminal vesicles
      1. prostate gland
      2. bulbourethral gland
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11
Q

2 seminal fluid functions

A
  1. helps to activate and buffer the sperm

2. serves as a source of nutrition

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12
Q

seminal vesicles

A

produces a viscous, alkaline fluid that is rcich in fructose

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13
Q

prostate gland

A

secretes a milky fluid containing seminalplasmin

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14
Q

bulbourethral

A

secretes a thick alkaline mucous

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15
Q

Penis: glans contain

-body contains

A

prepuce and external urethral meatus

-corposa cavernosa and corposa sponginosum

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16
Q

ovaries

  • aka
  • function
A

female gonads

-produce eggs and secrete estrogen and progesterone

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17
Q

female

  • germinal epithelium
  • tunica albuginea
  • stroma
A
  • outer covering
  • CT beneath germinal layer
  • contains outer cortex containing ova and inner medulla
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18
Q

granulosa cells function

A

secrete estrogen

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19
Q

mature follicle contains

A

central antrum

20
Q

corpus luteum

A

formed from the follicle after ovulation

21
Q

corpus albicans

A

scar tissue of corpus luteum

22
Q

fimbrae

A

wave to produce currents that help guide the discharged ovum into the tube

23
Q

where does fertilization occur

A

in the upper 1/3 of the fallopian tube

24
Q

4 processes of the uterus

A
  1. menstruation
  2. implantation
  3. embryonic and fetal dev
  4. labor
25
Q

uterus

  • consists of 2 major regions
  • composed of 3 layers
A
  • body and cervix
    1. endometrium
      1. myometrium
      2. perimetrium
26
Q

inner endometrium

  • definition
  • contains 2 layers
A
  • mucus membrane with glands
  • functional zone (sloughed off during menstruation)
    2. basilar zone (permanent layer that attaches endometrium to myometrium)
27
Q

gestation period

  • definition
  • about __ weeks
  • first 8 weeks known as
  • rest of time known as
A
  • time from fertilization until birth
  • 38
  • embryonic period
  • fetal period
28
Q

cleavage

  • definition
  • morula
  • what forms in the morula
A
  • zygote rapidly divides by mitosis into smaller cells called blastomeres
  • solid ball of cells
  • blastocoel forming a blastocyst
29
Q

blastocyst

-definition

A

consists of a cluster of cells called the inner cell mass and an outer covering called the trophblast

30
Q

what does the inner cell mass become

A

develops into the embryo

31
Q

trophoblast

  • functions
  • what does this form into
A
    1. helps blastocyst implant in the uterus
      1. secretes human chorionic gonadotropic
  • the chorion (placenta)
32
Q

HCG

A

maintains the corpus luteum in early pregnancy

33
Q

implantation

  • when does it occur
  • where does blastocyst bury into
  • what do the trophoblasts do
A
  • 7 days after fertilization
  • into the functional zone of the uterus
  • secrete enzymes that erode the uterine lining at the point of attachment
34
Q

gastrulation

A

inner cell mass differentiates into primary germ layers

35
Q

primary germ layers

A
  1. ectoderm
  2. mesoderm
  3. endoderm
36
Q

what will the __ form into

  • ectoderm
  • mesoderm
  • endoderm
A
  • nervous system and epidermis of the skin
  • muscle,bone,circulatory system, urinary system and reproductive system
  • epithelial lining of the digestive tract,respiratory tract, urinary bladder and urethra
37
Q

as a result of gastrulation

A

the embryonic disc is formed

38
Q

yolk sac

A

makes blood cells early in dec. and gives rise to cells that later become sex cells

39
Q

amnion

A

membrane that surrounds embryo and contains amnionic fluid

40
Q

allantois

A

small tube that forms from the future umbilical cord and also forms blood cells in early development

41
Q

chorion

-contain __ that help __

A

chorionic villi that help embryo attach to the uterine wall

42
Q

placenta

  • site of
  • develops when
  • type of organ
  • function
A

site of nutrient and gas exchange between mother and fetus

  • during 3rd month
  • endocrine organ
  • synthesizes HCG, progesterone, human lactogen, placental prolactin and relaxin
43
Q

embryogenesis

A

formation of body and internal organs of the embryo

44
Q

what stage implants in the uterus

A

implantation; blastocyst

45
Q

umbilical vein

A

delivers oxygenated blood to the fetus

46
Q

umbilical artery

A

carries deoxygenated blood from fetus to placenta