THE MUSCLES. 189 



c. Inclined sideways by: quadrat, lumbor., multifidus and 

 inter-transversarii of one side. 



414. D. The coccyx is : 



a. Flexed by: sacro-coccygeus anticus, coccygeus; levator am. 



b. Extended by: sacro-coccygeus posticus. 



415. E. The pelvis is drawn and rotated forwards, back- 

 wards, and sideways by the flexors, extensors, and rotators of the 

 thigh. 



a. The anus is closed by : Sphincter ani ; anus and prostate 

 elevated by : levator ani. 



b. The urethra is compressed by : constrict, isthmi urethr. ; 

 the corp. cavernosa by : erector penis ; the bulb by: bulbo-caver- 

 nostts. 



c. The bladder is drawn down by: the vesicalis ; the vagina 

 contracted by : constrictor vaginse. 



d. The testes raised towards the external abdominal ring by: 

 cremaster. 



III. Superior Extremity. 



416. A. The clavicle is : 



a. Raised by : cucullaris, cleido-mastoideus . 



b. Drawn down by : subclavius, pectoral, major, deltoideus. 



417. B. The scapula is drawn : 



a. Upwards by : lev. anguli scap., and cucullaris. 



b. Forwards, inwards, and downwards by : pectoral, minor, 

 coraco-brachialis. 



c. Forwards and outwards by : serratus ant. major. 



d. Backwards by : rhomboidei, cucullaris. 

 [The shoulder is rotated by : cerratus ant. major. 



418. C. The humerus is : 



a. Abducted by ; deltoideus, coraco-brachial, supra-spinalus. 



b. Adducted by : pectoral, major., latissim. dorsi, teres major. 



c. Rotated outwards by : infra- and supra-spinatus, teres 

 minor ; inwards by : subscapularis and teres major. 



419. D. The fore-arm is : 



a. Flexed by : biceps and brachialis internus. 



b. Extended by : triceps and anconseus. 



c. Proned by : pronator teres and quadratus. 



d. Supined by : supinator longus and brevis. 



420. E. The hand is : 



a. Flexed by: flexor carpi radial, and ulnaris,palmaris longus. 



