ART ART Anatomy & Biomechanics

Question 1

Which muscle group is the primary hip flexor?

Accepted Answer

Iliopsoas

Answer

The iliopsoas, comprising the iliacus and psoas major, is the primary hip flexor.

Question 2

How many muscles make up the rotator cuff?

Accepted Answer

4

Answer

The rotator cuff has four muscles: supraspinatus, infraspinatus, teres minor, and subscapularis (SITS).

Question 3

Which joint type allows the greatest range of motion?

Accepted Answer

Ball-and-socket joint

Answer

Ball-and-socket joints, like the hip and shoulder, allow multiplanar movement including rotation.

Question 4

The sciatic nerve originates from which spinal levels?

Accepted Answer

L4–S3

Answer

The sciatic nerve arises from nerve roots L4 through S3 of the lumbosacral plexus.

Question 5

Which connective tissue directly connects muscle to bone?

Accepted Answer

Tendon

Answer

Tendons are dense connective tissue that attach muscles to bones and transmit contractile force.

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