smaller psoas muscle


n.

An inconstant muscle with origin from the twelfth thoracic and the first lumbar vertebrae and the disk between them, with insertion into the iliopubic eminence, with nerve supply from the lumbar plexus, and whose action assists in the flexion of the lumbar spine.psoas minor

QUIZZES

IS YOUR DESERT PLANT KNOWLEDGE SUCCULENT OR DRIED UP?

Cactus aficionados, don't get left in the dust with this quiz on desert plants. Find out if you have the knowledge to survive this prickly foray into the desert!
Question 1 of 7
This tall, horizontally branched cactus is probably the most recognizable cactus in Arizona. What is it called?
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.