Human Muscle Anatomy Quiz

1. What is the origin, insertion, and action of the iliopsoas muscle?

Origin: Ischial tuberosity Insertion: Greater trochanter of femur Action: Prime mover of hip extension

Origin: Lateral condyle of femur Insertion: Calcaneus via Achilles tendon Action: Plantarflexion of foot

Origin: Spinous processes of thoracic vertebrae Insertion: Medial border of scapula Action: Retraction of scapula

The correct answer provides the accurate details of the origin, insertion, and action of the iliopsoas muscle, while the incorrect answers contain information about different muscles with varying origins, insertions, and actions. This allows individuals to test their knowledge of muscle anatomy and function.

Explanation

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2. What is the origin and insertion of Psoas Major, and its primary action?

Origin: Iliac crest, Insertion: Greater trochanter of femur, Action: Prime mover for extending thigh

Origin: Spinous processes of thoracic vertebrae, Insertion: Calcaneus, Action: Prime mover for hip abduction

Origin: Costal cartilages of ribs 5-7, Insertion: Tibial tuberosity, Action: Prime mover for plantar flexion

The Psoas Major muscle originates from the transverse processes, bodies and discs of lumbar vertebrae and T12, inserts onto the lesser trochanter of the femur, and acts as the prime mover for flexing the thigh.

Explanation

3. What are the origin, insertion, and action of the Quadratus Lumborum muscle?

Origin: sacrum & coccyx; Insertion: Spinous processes of lumbar vertebrae; Action: Extends vertebral column.

Origin: iliac crest & lumbar fasciaInsertion:Transverse processes of lumbar vertebrae L1-L4 & lower margin of 12th rib.Action:Flexes vertebral column laterally

Origin: ribs; Insertion: Scapula; Action: Rotates shoulder joint.

Origin: femur; Insertion: Tibia; Action: Flexes knee joint.

The Quadratus Lumborum muscle originates from the iliac crest & lumbar fascia, inserts onto the transverse processes of lumbar vertebrae L1-L4 & lower margin of 12th rib, and its action is to flex the vertebral column laterally. The incorrect answers provided do not accurately describe the origin, insertion, and action of the Quadratus Lumborum muscle.

Explanation

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Aug 04, 2025

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Aug 04, 2025

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