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Chapter 27: Reproductive System

Terms in this set (37)

Male reproductive system organs
testes, ductus (vas) deferens, epididymus, ejaculatory ducts, urethra, seminal vesicles, prostate, bulbous
How does the spermatozoa get to the urethra?
propulsion, muscle contractions
What is the structure and function of the scrotum?
house the testes, separated into two compartments: dartos muscle and a subcutaneous layer. Temperature regulation, cremaster muscle pulls the scrotum up and down. Out of body= away from normal body temp.
What are semineferous tubules?
carry sperm within them, spermatogenesis
Spermatogenesis
begins with spermatogonia (diploid stem cells) that differentiate into diploid primary spermatocytes
Spermatogenic cell process
Spermatogonium (2n)(stem cell)--> primary spermatogonium (2n)--> secondary spermatogonium (n)--> spermatid (n)--> sperm cell or spermatozoan (n) (2,2,1,1,1)
meiosis I
Primary spermatocyte (2n) --> two secondary spermatocytes (n)
Meiosis II
in secondary spermatocytes, become four spermatids
Sperm
designed to reach and penetrate the secondary oocyte in order to achieve fertilization and create a zygote
The head contains:
a nucleus with 23 chromosomes (haploid)
Acrosome
covers the head and studded with enzymes to help with penetration
Neck
contains centrioles that form the microtubules that make up tail
Middle piece
contains mitochondria that make ATP for locomotion of the sperm
Principle piece and end piece
make up the tail used for movement
What do hormones control in the male reproductive system?
testicular function
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