Final Exam Reproduction Flashcards
What are teh 4 functions of the male reproductive organs?
- Production of sex cells
- Production of sex hormone - Testosterone
- Intro. of male gametes to female repro organs
- Production of other hormones
What are the 4 general parts of the male reproductive tract?
- Testis
- Epididymis
- Accessory sex glands:
Vesicular glands, prostate, bulbourethral glands - External genitalia/ penis
What is the site of spermatogenesis?
Testis
Where are sex hormones produced?
Testis
What are the layers surrounding the Testis?
- 2 tunicae vaginalis
2. 1 tunica albuginea
What are the 2 components of the tunica vaginalis?
- Parietal- attached to CT of scrotum
2. visceral- surrounds the testis and epididymis
connective tissue trabeculae that separates the seminiferous tubules
Septule testis
What cells are the interstitial cells found between the semineferous tubules?
cells of leydig
What are the most immature spermatogenic cells?
Spermatogonia
Where are spermatogonia found in the testis
Next to the BM
What are the steps of spermatogenesis?
spermatogonia stem cells–> Spermatogonia A or B–> Spermat B undergo mitosis–> Primary spermatocytes–> 1st meiosis–> secondary spermatocytes–> Secondary meiosis–> Spermatids–> spermiogenesis–> Spermatozoa
Cells located outsid BM of tubule. Function to mover spermatozoa out
Myoid cells
Trace the spermatic pathway
seminiferous tubules–> Tubuli recti–> Efferent ductules–> Epididymal duct–> Ductus deferens–> Pelvic urethra–> penile urethra
connects the straight testicular tubules with the efferent ductules in the head of the dpididymis
Rete testis
Trace the path of sperm in the testis?
seminiferous tubules–> straight testicular tubules–> rete testis–> efferent ductules–> epididymal ducts
Tall cells that extend from the BM to the lumen of the tubule
Sertoli Cells
What are the 3 functions of sertoli cells?
- support, protect, nourish spermatogenic cells
- secrete supporting testicular fluid
- protect spermatids from immune system
What do sertoli cells release when FSH is bound to their receptors?
Androgen Binding protein (ABP)
What does ABP do?
binds to androgens to influence germ cell differentation
What 3 hormones does sertoli cells release
- ABP
- AMH
- Inhibin
What is the main function of inhibin?
suppress secretion of FSH
What is the main function of AMH?
Prevents formation of mullerian duct and oviduct in embryo
Cells that occur in clusters between seminiferous tubules
Interstitial leydig cells
T/F. Leydig cells have a basophilic cytoplasm?
F. foamy acidophilic
What is the main function of Leydig cells
Secrete testosterone
What controlls the secretion of testosterone?
ICSH- Interstitial cells stimulating hormone
LH!
What is the function of testosterone?
- secondary male sex characteristics
- libido
- stimulates development and secretory activity
- stimulates growth of skeletal muscles and bones
What vasculature is coild in the spermatic cord?
Testicular artery and vein
What is the spermatic cord composed of?
- testicular artery
- testicular vein
- Lymphatics
- Ductus Deferens
What are the 3 sections of the depididymal duct?
head, body, tail
What is the main function of the epidimyal duct?
Fluid Resorption and secretion of glycerophosphocholine and sperm storage
What is the gland located ner the junction of the ductus deferens and the urethra in ruminants?
Ampulla
What are the 4 accessory sex glands?
- Bulvourethral Glands
- Prostate Gland
- Ampullary glands
- Vesicular Glands
What are the 3 functions of the accessory sex glands?
- Nutrition
- Buffer
- Sperm movement
T/F. all of the accessory sex glands are tubuloalveolar
T
What are the 3 accessary glands of the bull?
- Vesicuolar glands
- Prostate
- Bulbourethral glands
T/F. seminal vesicles are not present in dogs?
T
What do the seminal vesicles produce?
Fructose, source of energy for sperm
What does the prostate gland surround?
Prostatic urethra
What surrounds the prostate gland?
Fibroelastic capsule
What is found in the lumen of the prostate gland?
Corpora amylacea
What is the secretory produce of the prostate gland?
Proteins
Paired masses of erectile tissue found within the penis?
Corpora cavernosa
Single mass of erectile tissue surrounding the urethra?
Corpus spongiosum
What type of penis do bulls, rams, and bores have?
Fibroelastic
What are the 3 parts of the male urethra?
- prostatic
- pelvic
- penile
What are the 8 parts of the female repro. system?
- overies
- oviducts
- uterus
- cervix
- Vagina
- vestibule and vulva
- associated glands
- mammary glands
What are the 5 functions of the female reproductive tract?
- exocrine- production of gametes
- endocrine- sex hormones
- reception of male gametes
- fetal development
- nutrition of newborn
What are the 2 major functions of the ovaries?
- produce gametes
2. produce hormones
What are the 2 parts of the ovary?
- cortex
2. Medulla
In which part of the ovary would you find follicles in various stages of development?
Cortex
In which part of the ovary would you find connective tissue, nerves, blood, and lymph tissue
Medulla
What is the major difference seen in the ovary of a mare?
cortex and medulla are reversed
What is the layer of connective tissue found just below the surface epithelium in the ovary?
Tunica albuginea
continuous process throughout reproductive life whereby primordial follicles undergo maturation during each repr. cycle.
Folliculogenesis
Follicular growth and maturation is dependent on ____ secreted from adenohypophysis
FSH
Which hormone sis important for estrogen synthesis and ovulation
LH
Structure containing an oocyte surrounded by specialized epithelial cells
Ovarian Follicle
Primary oocyte is enclosed by flattened simple squam. follicular cells that rest on basal lamina
Primordial follicles
primary oocyte enclosed by a simple cuboidal layer of follicular cells
Primary follicles
A primary oocyte enclosed by several layers of follicular cells
Secondary follicles
Once follicular cells proliferate through mitosis they are called____
Granulosa cells
Glycoprotein layer located at the interphase between the oocyte and the granulosa cells of secondary follicles
Zona pellucida
Large, pale staining, spindle-shaped cells that have the morphology of steroid producing/metabolizing cells
Theca cells
Cells with receptors for FSH, important in the development of the follicle
Granulosa cells
Follicle becomes larger, small liquid filled areas appear b/t granulosa cells
Tertiary follicles
Fluid inside the antrum of tertiary follicles
Liquor folliculi
Oocyte detaches from the cumulus oophorus and floats free in follicular liquid
Mature (graffian) follicle
The oocyte is surrounded by a layer of follicular cells and sits on an aggregate of granulosa cells
Tertiary follicle
layer of follicular cells in tertiary follicle
Corona Radiata
Aggregate of granulosa cells in tertiary follicle
Cumulus oophorus
Process through which follicular cells degenerate
Atresia
After ovulation, blood flows into the antrum and the ruptured follicle becomes the ______
corpus heorrhagicum
Capillaries from the stroma invade the collapsed follicle and convert it into a temp. endocrine organ called ______
corppus luteum
The process by which the granulosa and theca cells transform into luteal cells
Luteinization
What do granulosa lutein cells produce in response to FSH and LH?
Progesterone and estrogens
In response to LH, what do theca lutein cells produce?
Progesterone
Yellow pigment that appears in the luteal cells of carnivores, mares, and cows
Lutein
Fibrous scar from the involution of the Corpus luteum
Corpus albicans
muscular tube derived from mullerian ducts
oviduct
What are the 4 functions of the oviduct?
- receive the ovum
- secretions promote capacitation of sperm
- provide environment for fertilization
- transport the zygote to the uterus for implantation
What are the 3 functions of the uterus?
- provides sterile environment for fetus
- Exchange of nutrients and trophic factors
- muscles contribute to birth and release of fetus
What are the 3 layers of the uterus
- Endometrium
- Myometrium
- Perimetrium
What are the 2 zones of the glandular mucosa in the endometrium?
- functional zone (F)
2. Basal zone (B)
Which layer in the endometrium remains after pregnancy or estrus, the F or B zone?
B
What are the 2 parts of the cervix called?
- Endocervix
2. Ectocervix
What are the 2 functions of the cervix?
- Seal to prevent organisms/substances from entering
2. Holds products of conception w/i uterus
T/F the endocervix contains no muscularis mucosae?
T
What are the 3 layers of the Vagina?
- mucosa
- muscularis
- Serosa/adventitia
Begining or the estrus cycle
Proestrus
Which types of cells are present during early proestrus?
Epithelial, RBCs, neutrophils
Which types of cells are present during late proestrus?
intermediate and superficial cells, some neutrophils
What are the phases of the estrus cycle?
- Proestrus
- Estrus
- Diestrus
- Anestrus
What cell types are present during estrus?
Superficial/keritinized cells, some RBC, no nutriphils
What cell types are present during diestrus?
Intermediate, some RBC
What types of cells are present during Anestrus?
Parabasal and intermediate, some nutrophils