From previous year - Kines exam 1 jeopardy

Identify the proper arthrokinematics at the HU joint with distal end fixed (closerd chain) elbow flexion

anterior roll, posterior slide

Movement occuring in the frontal plane will ALWAYS take place around which axis?

Anterior-Posterior

What happens to the force of gravity as a abducts their arm from 0 degrees to 90 degrees of abduction?

The force of gravity remains unchanged

A patient is holding a dumbbell at 90 degrees of elbow flexion. In order to maintain static equilibrium, how must the force of the biceps relate to the force of the dumbbell?

The force of the biceps must be greater than the force of the dumbbell.

What type of muscle contraction would occur if the internal torque created at a joint is greater than the external torque?

Concentric

Which elbow flexor muscle has the greatest cross-sectional area, and is therefore the workhorse of the flexors?

Brachialis

What is the most important factor when determining the force-generating capability of a muscle?

The cross sectional area of the muscle

What muscle group is primarily active to maintain the appropriate length of the finger flexors during activities involving grasping?

Wrist extensors

What structure is responsible for transmitting force proximally from the radius to the ulna when a force is applied against the hand?

IOM

What is the normal ratio of glenohumeral joint motion to scapular motion with elevation of the arm overhead?

2:1 ratio of GH movement to scapular movement

What osteokinematics at the MCP, PIP, and DIP joints would place the lumbricals on maximal passive tension?

MCP extension, PIP and DIP flexion

What ligament is responsible for limiting excessive supination?

Palmar radioulnar ligament

What motion occurs in the transverse plane at the glenohumeral joint during full shoulder abduction?

GH External Rotation

Which portion of the ulnar collateral ligament is responsible for limiting valgus stress when the elbow is in extension?

Anterior bundle

Identify the appropriate arthrokinematics at the proximal radioulnar joint with distal end free (open chain) pronation

Spin of the radial head on the ulna

Identify the appropriate arthrokinematics at the 1st CMC joint with distal end free (open chain) thumb abduction

Palmar roll and dorsal slide of the 1st MC on the trapezium

Which shoulder muscle is active during activities requiring forceful elbow flexion in order to prevent unwanted motion at the shoulder?

posterior deltoid (other shoulder extensors would be an appropriate answer here as well)

Which two flexor tendon pulleys are most important for proper function of the finger flexors?

A2 and A4

Identify the proper arthrokinematics at the distal radioulnar joint with distal end free (open chain) supination

Dorsal roll and dorsal slide of the radius on the ulna

Identify the motions that occur at the SC and AC joints with scapular elevation with the arm at the side (shrug)

SC joint elevation and AC joint downward rotation

When performing a standing lateral raise, at what degree of shoulder abduction would you require the largest force from the shoulder abductor muscles?

90 degrees of shoulder abduction

Which portion of the extensor mechanism is responsible for extending the DIP joint?

Terminal tendon

Identify the proper arthrokinematics at the sternoclavicular joint with distal end free (open chain) scapular retraction

Posterior roll and posterior slide of the clavicle on the sternum

Identify the proper arthrokinematics at the glenohumeral joint with distal end free (open chain) shoulder abduction

Superior roll and inferior slide of the humerus on the scapula

Identify the appropriate arthrokinematics at the radiocarpal joint with distal end free (open chain) ulnar deviation

Ulnar roll and radial slide of the carpals on the radius