Class Notes (836,580)
Canada (509,856)
Brock University (12,092)
Biology (1,629)
BIOL 2P93 (93)
Lecture

Male Reproductive Histology

2 Pages
38 Views
Unlock Document

Department
Biology
Course
BIOL 2P93
Professor
Jenny Janke
Semester
Fall

Description
Histology—Male Reproductive System I. Testes a. Terms i. Tunica Vaginalis—caivty surrounding each testis ii. Pampiniform Plexus—convoluted arteries supplying testes which are convoluted around the testicular veins => countercurrent temperature exchange iii. Tunica Albuginia—dense fibrous connective tissue; protective layer iv. Lobuli testis—each testis is subdivided into ~250 lobules composed of 1- 4 seminiferous tubules b. Seminiferous tubule i. basal lamina—ensheaths each seminiferous tubule ii. peritubular myoid cell—responsible for rhythmic contraction of ST => movement of immotile, immature sperm iii. Sertoli cells—non-dividing tall columnar cells; “nurse” cells; each surrounds ~50 adjacent spermatogenic cells; sensitive to FSH 1. fxns—coordination of spermatogenesis, production of testicular fluid, formation of brain-testes barrier iv. Leydig cells 1. secrete testosterone in response to LH 2. sit in connective tissue between seminiferous tubules v. Cells 1. Spermatogoinium—proliferate & give rise to new stem cells 2. Spermatocytes—go from 4n  2n (haploid) 3. Spermatids—(1n) 4. Spermatozoa—immature sperm vi. Spermatogenesis 1. 3 steps—spermatocytogenesis (production of spermatocytes from undifferentiated diploid precursor cells); meiosis, spermiogenesis 2. Takes 64-74 days for spermatogenesis to take place 3. spermiogenesis—transformation undergone by haploid spermatids; includes acrosomal formation, nuclear condensation, & tail formation a. acrosome—specialized compartment derived from golgi for egg penetration & fertilization vii. Cycle of seminiferous tubule 1. D
More Less

Related notes for BIOL 2P93

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit