468 



ANATOMY FOR NURSES [Chap. XXI 



The Pros- 

 tate 



Cowper's 

 Glands 



Puberty 

 Semen 



Reproduc- 

 tion 



Consists 

 of 



tion 



Ovum 



Situated in front of the neck of the bladder and around the 



commencement of urethra. 

 Shape — resembles chestnut. 



Fibrous capsule containing glandular and mus- 

 cular tissue. Glandular tissue consists of 

 tubules which empty into urethra. 

 Function — Secretion of prostatic fluid. 

 Located one on each side of membranous urethra into which 



they empty. About the size of a pea. 

 Function — Secretion of a fluid wliich forms part of seminal 



fluid. 

 Age at which sexual organs become matured and functional. 

 Boy changes to a man. 

 j Fluid derived from the various sexual glands in the male. 

 I Spermatozoa are the main elements. 

 Function — Produce another being. 

 Impregna- f Union of spermatozoon and ovum. 

 \ Occurs in Fallopian tubes. 

 Globular cell fonned in ovaries, jls inch in 

 diameter. 



Cell- wall = zona pellucida. 

 CeU-body = cjiioplasm, serves as 



food. 

 Cell nucleus = germinal vesicle, 



contains chromatin. 

 . Nucleolus = germinal spot. 

 A long, narrow cell formed in testes, ^Jo of an 

 inch in length. 



■ EUiptical head which contains 

 nuclear material and chroma- 

 Consists of { tin. 



Rod-shaped centre piece. 

 Tail. 

 Capable of independent motion in a fluid 



medium. 

 Function to fertilize o^^im. 

 Di\'ides into many cells surrounded by amnion 

 and called embryo. Attaches itself to upper 

 part of uterine ca\'ity in soft mucous mem- 

 brane prepared for its reception. 

 (Entoderm. 

 Mesoderm. 

 Ectoderm. 

 Two weeks — size of a bean. 

 Four weeks — size of a walnut. 

 Four months — foetus — human characteristics 

 are marked. 



Consists 



Sperma- 

 tozoon 



Develop- 

 ment of { Embryo 

 ovum 



