lab 11

Question 1

testes

• aka
• function
• what are each testes covered by

Answer 1

• male gonads
• produces male gametes and secrete testosterone
• tunica albuginea

Question 2

seminiferous tubules

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

Answer 2

where spermatogenesis or sperm production occurs

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

Question 3

edge of cells and inward

Answer 3

spermatogonia, primary spermatocytes, secondary spermatocytes, spermatids and spermatozoa

Question 4

sertoli or sustentacular cells

-functions

Answer 4

1. maintains blood testis barrier

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

Question 5

interstitial cells of leydig

• location
• definition

Answer 5

• between seminiferous tubules

- secrete testosterone

Question 6

sperm

• head
• middle piece
• tail

Answer 6

• contains the nucleus and acrosomal cap
• contains mitochodria
• flagellum for locomotion

Question 7

epididymis

Answer 7

where sperm are stored and undergo maturation

Question 8

spermatic cord

• surrounded by
• contains

Answer 8

• CT

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

Question 9

male urethra

- 3 parts

Answer 9

• prostatic
• membraneous
• spongy

Question 10

male accessory sex glands

• secretes
• 3

Answer 10

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

Question 11

2 seminal fluid functions

Answer 11

1. helps to activate and buffer the sperm

2. serves as a source of nutrition

Question 12

seminal vesicles

Answer 12

produces a viscous, alkaline fluid that is rcich in fructose

Question 13

prostate gland

Answer 13

secretes a milky fluid containing seminalplasmin

Question 14

bulbourethral

Answer 14

secretes a thick alkaline mucous

Question 15

Penis: glans contain

-body contains

Answer 15

prepuce and external urethral meatus

-corposa cavernosa and corposa sponginosum

Question 16

ovaries

• aka
• function

Answer 16

female gonads

-produce eggs and secrete estrogen and progesterone

Question 17

female

• germinal epithelium
• tunica albuginea
• stroma

Answer 17

• outer covering
• CT beneath germinal layer
• contains outer cortex containing ova and inner medulla

Question 18

granulosa cells function

Answer 18

secrete estrogen

Question 19

mature follicle contains

Answer 19

central antrum

Question 20

corpus luteum

Answer 20

formed from the follicle after ovulation

Question 21

corpus albicans

Answer 21

scar tissue of corpus luteum

Question 22

fimbrae

Answer 22

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

Question 23

where does fertilization occur

Answer 23

in the upper 1/3 of the fallopian tube

Question 24

4 processes of the uterus

Answer 24

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

Question 25

uterus - consists of 2 major regions - composed of 3 layers

Answer 25

- body and cervix - 1. endometrium 2. myometrium 3. perimetrium

Question 26

inner endometrium - definition - contains 2 layers

Answer 26

- mucus membrane with glands - functional zone (sloughed off during menstruation) 2. basilar zone (permanent layer that attaches endometrium to myometrium)

Question 27

gestation period - definition - about __ weeks - first 8 weeks known as - rest of time known as

Answer 27

- time from fertilization until birth - 38 - embryonic period - fetal period

Question 28

cleavage - definition - morula - what forms in the morula

Answer 28

- zygote rapidly divides by mitosis into smaller cells called blastomeres - solid ball of cells - blastocoel forming a blastocyst

Question 29

blastocyst | -definition

Answer 29

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

Question 30

what does the inner cell mass become

Answer 30

develops into the embryo

Question 31

trophoblast - functions - what does this form into

Answer 31

- 1. helps blastocyst implant in the uterus 2. secretes human chorionic gonadotropic - the chorion (placenta)

Question 32

HCG

Answer 32

maintains the corpus luteum in early pregnancy

Question 33

implantation - when does it occur - where does blastocyst bury into - what do the trophoblasts do

Answer 33

- 7 days after fertilization - into the functional zone of the uterus - secrete enzymes that erode the uterine lining at the point of attachment

Question 34

gastrulation

Answer 34

inner cell mass differentiates into primary germ layers

Question 35

primary germ layers

Answer 35

1. ectoderm 2. mesoderm 2. endoderm

Question 36

what will the __ form into - ectoderm - mesoderm - endoderm

Answer 36

- 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

Question 37

as a result of gastrulation

Answer 37

the embryonic disc is formed

Question 38

yolk sac

Answer 38

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

Question 39

amnion

Answer 39

membrane that surrounds embryo and contains amnionic fluid

Question 40

allantois

Answer 40

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

Question 41

chorion | -contain __ that help __

Answer 41

chorionic villi that help embryo attach to the uterine wall

Question 42

placenta - site of - develops when - type of organ - function

Answer 42

site of nutrient and gas exchange between mother and fetus - during 3rd month - endocrine organ - synthesizes HCG, progesterone, human lactogen, placental prolactin and relaxin

Question 43

embryogenesis

Answer 43

formation of body and internal organs of the embryo

Question 44

what stage implants in the uterus

Answer 44

implantation; blastocyst

Question 45

umbilical vein

Answer 45

delivers oxygenated blood to the fetus

Question 46

umbilical artery

Answer 46

carries deoxygenated blood from fetus to placenta