Source:http://linkedlifedata.com/resource/umls/id/C0001216
MSH: The cap-like structure covering the anterior portion of SPERM HEAD. Acrosome, derived from LYSOSOMES, is a membrane-bound organelle that contains the required hydrolytic and proteolytic enzymes necessary for sperm penetration of the egg in FERTILIZATION.,CSP: cap like structure covering the anterior portion of sperm head; a membrane bound organelle that contains the required hydrolytic and proteolytic enzymes necessary for sperm penetration of the egg in fertilization.,GO: A structure in the head of a spermatozoon that contains acid hydrolases, and is concerned with the breakdown of the outer membrane of the ovum during fertilization. It lies just beneath the plasma membrane and is derived from the lysosome. [ISBN:0124325653, ISBN:0198506732]