Acromioclavicular Joint - ț̢
The gliding joint formed by the outer extremity of the CLAVICLE and the inner margin of the acromion process of the SCAPULA.
Acromion - ț̢
The lateral extension of the spine of the SCAPULA and the highest point of the SHOULDER.
Synonyms : Acromions
Acronine - ț̢
A pyrano-acridone alkaloid found in RUTACEAE plants.
Synonyms : Acronycin
Acrosin - ț̢
A trypsin-like enzyme of spermatozoa which is not inhibited by alpha 1 antitrypsin.
Synonyms : Akrosin, M beta-Acrosin, M beta Acrosin, beta-Acrosin, M, proteinase, Acrosomal
Acrosome - ț̢
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.