Pectineus muscle (3D)

This video tutorial explores the anatomy and functions of the pectineus muscle. It begins with an overview of the muscle's location and structure, highlighting its flat quadrilateral shape and its position from the pelvis to the femur. The tutorial explains the muscle's classification as an adductor of the thigh, its innervation by the femoral nerve, and occasionally by the obturator nerve. The functions of the pectineus muscle are detailed, including its role in thigh adduction, flexion, and potential assistance in internal and external rotation. The video concludes with a summary of these functions.

Where does the pectineus muscle originate?

• Lesser trochanter of the femur

• Greater trochanter of the femur

• Superior Ramis of the pubis

• Ischial tuberosity

Which nerve primarily innervates the pectineus muscle?

• Obturator nerve

• Femoral nerve

• Sciatic nerve

• Tibial nerve

What is the primary function of the pectineus muscle?

• Rotation of the thigh

• Adduction of the thigh

• Extension of the thigh

• Abduction of the thigh

Which movement is NOT primarily associated with the pectineus muscle?

• Flexion of the thigh

• Adduction of the thigh

• Extension of the thigh

• Internal rotation of the thigh

The pectineus muscle assists in which type of rotation of the thigh?

• Only internal rotation

• Neither internal nor external rotation

• Only external rotation

• Both internal and external rotation