30/31 Male Repro

Question 1

interstitial cells in CT of seminiferous tubules that secrete testosterone

Answer 1

LEYDIG cells

Question 2

sertoli cells have what shape epithellia
also have oblong, euchromatic nucleus and visible nucleolus

Answer 2

Columnar epithelal cells

Question 3

tight junctions between sertoli cells form what kind of barrier

Answer 3

Blood Testis Barrier dividing tubule into basal and adluminal compartments
this barrier prevents antigens on developing cells that first appear at puberty from being recognized as foreign by immune system

Question 4

What do sertoli cells secrete (4)

Answer 4

Testicular Fluid
Andorgen Binding Protein
variety of hormones including INHIBIN
Anti Mullerian Hormone

Question 5

this protein concentrates testosterone

Answer 5

ANDROGEN BINDING PROTEIN

Question 6

this hormone supresses FSH secretion by pituatary

Answer 6

IBHIBIN

Question 7

this hormone causes paramesonephric (Mullerian duct) to degenerate in the embryo
the duct forms the uterine tube and uterus in females

Answer 7

ANTI MULLERIAN HORMONE

Question 8

What penetrates the ovum at fertilization

Answer 8

ACROSOME which contains lysosomal enzymes

Question 9

newly released sperm are nonmotile, and are carried by testicular fluid into duct system.
When do sperm become motile?

Answer 9

in the epididymis

Question 10

round nucleus near basement membrane, replicates

Answer 10

SPERMATOGONIA

Question 11

large nucleus with coiled chromosomes

Answer 11

PRIMARY SPERMATOCYTE

Question 12

small nucleus towards lumen, becomes darker as transforms into spermatozoa

Answer 12

SPERMATID

Question 13

undescended testicles are

Answer 13

testes that fail to migrate into the scrotum (CRYTORCHIDISM)

Question 14

excretory ducts within the testis include (3)

Answer 14

straight tubules, rete testis, and efferent ductules

Question 15

– continuous with seminferous tubules, lined by a simple columnar (sertoli cells) to a simple cuboidal epithelium

Answer 15

STRAIGHT TUBULES (TUBULI RECTI)

Question 16

this anastomosing network of channels in the dense CY of the mediastinum is lined by a simple cuboidal epithelium

Answer 16

RETE TESTIS

Question 17

from the rete testis extend 10-20 ductules lined by cuboidal cells with microvilli alternating with tall, ciliated columnar cells.
Non ciliated cells absorb testicular fluid, while cilated cells sweep the sperm towards the epidymis. Thin layer of circular smooth muscle cells surrounds the ductules and helps move the sperm

Answer 17

EFFERNT DUCTULES

Question 18

single highly coiled tube lined by pseudostratifed epithalial cells with stereocilia and rounded basal stems

Answer 18

EPIDIDYMIS

Question 19

is lined by a pseudostratified epithelium with stereocilia, a thin layer of CY and three THICK smooth muscle layers which contract during ejaculation

Answer 19

DUCTUS DEFERENS (VAS DEFERNS)

Question 20

during a vasectomy where does the bilateral ligation occur

Answer 20

of the ductus deferens – preventing sperm from entering semen

Question 21

The urethra is divided into 3 regions (PMP)

Answer 21

Prostatic
Membranous
Penile

Question 22

Prostatic Urethra is usually lined by

Answer 22

TRANSITIONAL EPITHELIUM

Question 23

membranous urethra is found between ___ and ___ and is usually lined by _______

Answer 23

prostate and penis and usually lined by pseudostratified epithelium

Question 24

penile urethra is liked by

Answer 24

pseudostratified or stratified squamous epithelia

Question 25

The penis has 3 cylindrical masses of erectile tissue surrounded by skin :

Answer 25

Corpus Cavernosa of the Penis (2) Corpus Spongiosum -- surrounds the urethra

Question 26

Accessory Male Genital Glands : (4)

Answer 26

Seminal Vesicles, Prostate Gland Bulbourethral Glands Glands of Littre

Question 27

Whats the major nutrient of sperm

Answer 27

FRUCTOSE

Question 28

these are large simple alveolar glands that give a honeycombed appearance to the lumen and secretes a yellowish viscid fluid

Answer 28

SEMINAL VESICLES

Question 29

a collection of 30-50 small branched, compound tubulo-alveolar glands whose ducts empty into prostatic urethra contain isolated smooth muscle cells secretes a milky fluid containing phosphatase and prostate specific antigen PSA

Answer 29

PROSTATE GLAND

Question 30

in older men, calcified glycoprotein accumulations and ____ appear in the secretory alveoli of prostate gland

Answer 30

PROSTATIC CONCRETIONS

Question 31

small paired glands lying alongside the membranous urethra secrete thin alkaline mucus into the penile urethra

Answer 31

BULBOURETHRAL GLANDS

Question 32

numerous small mucous glands in the corpus spongiosum that discharge along the length of the penile urethra

Answer 32

GLANDS OF LITTRE