Lab exam 2 (muscles and bones) Flashcards
what is the origin, insertion, and action of the rectus abdominis?
origin: pubis
insertion: ribs 5-7, xiphoid process
action: stabilize abdomen, flex vertebral column
what is the origin, insertion and action of the diaphragm?
origin: inferior ribs, sternum
insertion: central tendon
action: enlarges thoracic cavity, inspiration
what is the origin, insertion, and action of the infraspinatus?
origin: scapula (infraspinatus fossa)
insertion: humerus (greater tubercle)
action: laterally rotates humerus, stabilizes shoulder
what is the origin, insertion, and actions of the triceps brachii lateral head and medial head?
origins: humerus
insertions: ulna (olecranon process)
actions: forearm extensor
what are the origins, insertions, and actions of the biceps brachii?
short head:
origin: scapula (coracoid process)
long head:
origin: glenoid cavity
both:
insertions: radius (radial tuberosity)
actions: forearm flexion and supination.
what is the origin, insertion, and action of the brachioradialis?
origin: humerus
insertion: radius (styloid process)
action: forearm flexion
what is the origin, insertion, and action of the brachialis?
origin: humerus
insertion: ulna (coronoid process)
action: forearm flexion
what is the origin, insertion, and action of the gracilis?
origin: pubis
insertion: tibia (medial)
action: adducts thigh, medially rotates and flexes leg
foramen
(= hole)
- an opening through which blood vessels, nerves, or ligaments pass.
fossa
(= trench)
- a shallow depression
meatus
(= passageway)
- tubelike opening.
condyle
(= knuckle)
- large, round protuberance with smooth articular surface at end of bone.
epicondyle
(epi- = above)
- typically roughened projection above condyle.
spinous process
- sharp, slender projection.
trochanter
- very large projection.
