Histology Flashcards
What surrounds the testis
Double layer of Peritoneum-tunica vaginalis (mesothelial cells and thin connective tissue)
Thick capsule of dense irregular connective tissue
Which duct joins the Vas deferens (ductus deferens)
ductus epididymis
Synonymn for Support cells
Sertoli cells
What do Leidig cells do?
secrete androgens such as testosteroen
True/False, The sertoli cells are modified squamous epithelial cells
False. They are modified cylindrical epithelial cells
What seperates the adjacent sertoli cells into two compartments creating a blood-testis barrier
Zonulae Occludentes
What do sertoli cells secrete
- tubular fluid
- Androgen-binding Protein
- Inhibin (into blood, inhibits FSH)
Function of Androgen-binding protein
binds test in seminferous tubules, keeping it there in high concentrations for spermatogenesis
Brief description of spermatogenesis
1.Spermatogonium (mitosis) —>Primary spermatocyte (meiosis 1)—> secondary spermatocyte (meiosis 2)—>early spermatid —>late spermatid—>adult Spermatozoon.
Part of spermiogenesis is forming the acrosomal cap-elaborate
The acrosomal cap contains Enzyme hyaluronidase (hyaluronidase breaks down hyaluronic acid which surrounds the oocyte)
Function of blood-testis barrier
prevents toxic substances from entering tubules
prevents immune Response against sperm cells
Name of long microvilli found in vas deferens
sterocilia
What is the vas deferens tubule made of:
Mainly smooth muscle (inner longitudinal, middle circular & outer longitudinal)
inner epithilial layer: (pseudostratified cylindrical Epithelium with Long microvilli) which rests on thin layer of connective tissue (lamina propria)
What does the glandular tissue of the prostate Gland consist of :
Consists of 3 Groups of tubulo-acinar Glands (mucosal, submucosal, main prostatic)
Glandular Epithelium (prostate Gland)
simple cylindrical to pseudostratified