BIO 334 NAU JARVIS EXAM 2 QUESTIONS AND ANSWERS 2026 VERIFIED.

BIO 334 NAU JARVIS EXAM 2
QUESTIONS AND ANSWERS 2026
VERIFIED.



Elbow Joints - ANS Radioulnar
Radiohumeral
Ulnarhumeral


Radioulnar Joint - ANS • Radial head and
radial fossa on ulna


• Pronation and
supination


Radiohumeral Joint - ANS radius and humerus
flexion and extension


Ulnarhumeral Joint - ANS humerus (trochlea) and ulna (trochlear notch)
flexion and extension


Distal Humerus - ANS flex/etend with radius/ulna



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, Proximal ulna - ANS olecranon process (humerus in extension)
coronoid process (humerus in flexion)
trochlear notch (humerus)
radial notch (radial fossa in flexion)


Proximal Radius - ANS radial head
radial neck (lig surrounds to stabalize radius/ulna)
radial tuberosity
capitulum (contacts humerus on lateral epicondyle)
olecranon fossa (ulna)


What limits elbow extension? - ANS olecranon fossa hen fossa and process interact


Valgus vs Varus - ANS valgus: lateral deviation due to medial stress
varus: medial deviation due to lateral stress


Carrying angle of the elbow - ANS angle between ulna and humerus when arm is extended
offloads shear stress from elbow
women have larger angles because wider hips


Lateral Dislocation of Elbow - ANS ulna laterally rotates because lateral translation is
prevented by bone


Elbow Support Structures - ANS Joint Capsule
Collateral Ligaments
Superior Radioulnar Joint
Annular Ligament




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