quizzes 1-4 ANIMSCI 3160

female anatomy, male anatomy, embryogenesis, hormones

what structure is the hashed line demarcating and what is it’s function?

cervix

secretion of mucus

what is the name of the ovarian structure that houses the oocyte?

follicle

the parts pointed to with arrows labeled A are the left and right _____________

uterine horns

what are the tubular structures outlined by the hashed lines that arrows are pointing to? name the species it came from

oviducts

goat

the ovary shown is from a species that develops multiple preovulatory follicles every reproductive cycle. what species is this ovary from?

* cow
* horse
* pig
* gorilla

pig (only option that carries multiple fetuses)

in some species the mesosalpinx almost completely surrounds the ovary. name the species who’s reproductive tract has this adaptation

dog

name the species this reproductive tract is from

cat

identify the structure pointed to with arrows

labia

what ovarian area is marked with #3? to which animal does it belong?

ovulation fossa

horse

part of the broad ligament that suspends the oviduct in the body cavity is the ____________

mesosalpinx

what is the arrow labeled A pointing to?

ovary

what hormone is produced by the main reproductive male organ that also produces gametes?

testosterone

what is the name of the region of the penis demarcated by the dotted line labeled #7?

sigmoid flexure

identify the structure labeled #3 and the species

penis

dog

name a function of the structure labeled #20

sperm storage

pick the number and letter that labels the glans penis of the stallion

11b

name the species this tract came from

cat

which cells produce the main hormone in the testis?

leyding cells

classify the type of penis in this structure

vascular

the epididymis is formed by 3 parts. in order from the testis to the vas deferens they are the:

head (caput)

body (corpus)

tail (cauda)

which of the following species has no seminal vesicles (vesicular glands)

* boar
* dog
* bull
* ram

dog (only accessory gland is the prostate)

identify the structure labeled A

testis

which of the following does not contain any part of neurons?

* PVN
* posterior pituitary
* anterior pituitary
* surge center

anterior pituitary

cryptorchidism

failure of one or both testis to descend

during embryonic development of the gonads, the ______ becomes the supportive tissue and the _______ becomes the functional tissue in the male

cortex

medulla

which of the following structures is NOT originated from the paramesonephric ducts in the female?

* oviduct
* uterus
* cervix
* ovaries

ovaries

in absence of SRY, the gonads develop into the

ovary

how would external genitalia develop during embryonic development of an XY individual that lacks the androgen receptor?

female

the genital tubercle gives rise to (male and female)

glans penis in male

clitoris in female

which statement is FALSE regarding sexual differentiation?

* SRY expression determines differentiation into female tract
* SRY gene stimulates production of SRY protein only in males
* SRY is expressed only in cells of the primitive sex cord
* SRY protein = TDF (testis determining factor)

SRY expression determines differentiation into female tract

expression of SRY gene induces _________ cells to secrete AMH

sertoli

the gubernaculum is

a ligamentous structure attached to the testis that grow toward and into the scrotum

which duct system will develop in a typical XX individual?

mullerian

which of the following proteins is involved in the mechanism of action of LH and FSH at the target tissue?

* nuclear receptors
* mRNA
* adenlyate cyclase
* receptors of Golgi apparatus

andelyate cyclase

which of the following hormones circulates bound to plasma proteins?

* FSH
* estrogen
* prolactin
* GnRH

estrogen

glycoprotein hormone that stimulates ovulation and luteal formation

LH

which of the following contains nerve cell bodies, axons, and nerve terminals?

* anterior pituitary
* hypothalamus
* rathke’s pouch
* posterior pituitary

hypothalamus

which of the following choices is the best example of a neuroendocrine reflex?

* milk letdown initiated by suckling calf
* contraction of tunica darts initiated by temperature receptors
* contraction of arm muscles initiated by touching a hot pad with fingers
* perspiration through scrotal sweat glands initiated by temperature sensors

milk letdown

which of the following choices is sensitive to positive feedback by estrogen?

* hypothalamic tonic center
* hypothalamic surge center
* pineal gland
* posterior pituitary gland

surge center

20 carbon fatty acid that plays roles in ovulation and luteal regression

prostaglandin F2a

where is oxytocin released into the bloodstream?

posterior pituitary

what does a target cell have that is necessary for it to be responsive to a specific hormone?

a receptor