Practical Exam #3

Vocabulary-style flashcards covering the origins (O), insertions (I), and actions (A) of the muscles listed in Practical Exam #3.

Serratus Anterior

O: Surface of the Upper 8-9 Ribs

I: Anterior Medial Border of the Scapula

A: 1. Abduct the Scapula 2. Depress the Scapula

Rhomboids

O: Spinous Process of C7-T5

I: Medial Border of the Scapula

A: 1. Adduct the Scapula 2. Elevate the Scapula

Erector Spinae Group

O/I: Sacrum, Iliac Crest, Vertebral Column (Spinous & Transverse Processes), Rib Cage, & Mastoid Process

A: 1. Extend the Vertebral Column 2. Laterally Flex the Vertebral Column

Multifidus

O: Sacrum & Transverse Processes of Lumbar Vertebrae through Cervical Vertebrae

I: Spinous Process of Lumbar Vertebrae through Cervical Vertebrae (spanning 2-4 vertebrae)

A: 1. Extend the Vertebral Column

External Oblique

O: External Surface of Ribs 5-12 (lower 8)

I: Anterior Iliac Crest & Abdominal Aponeurosis

A: 1. Flex the Vertebral column 2. Laterally Flex the Vertebral Column 3. Rotate the Vertebral Column to the Opposite Side

Internal Oblique

O: Iliac Crest & Thoracolumbar Fascia

I: Internal Surface of Lower 3 Ribs & Abdominal Aponeurosis

A: 1. Flex the Vertebral Column 2. Laterally Flex the Vertebral Column 3. Rotate the Vertebral Column to the Same Side

Latissimus Dorsi

O: Thoracolumbar Aponeurosis, Posterior Iliac Crest, Last 3-4 Ribs, Spinous Processes of Last 6 Thoracic Vertebrae & Inferior Angle of the Scapula

I: Intertubercular Groove of the Humerus (Bicipital Groove)

A: 1. Extend the Shoulder 2. Rotate the Vertebral Column to the Opposite Side

Rectus Abdominis

O: Pubic Crest; Cartilage of Ribs 5-7 & Xiphoid Process

I: Cartilage of ribs 5-7 and xiphoid process

A: 1. Flex the Vertebral Column 2. Tilt the Pelvis Posteriorly

Teres Major

O: Inferior & Lower 1/3 of the Lateral Border of the Scapula

I: Crest of the Lesser Tubercle of the Humerus

A: 1. Extend the Shoulder 2. Adduct the Shoulder 3. Medially Rotate the Shoulder

Quadratus Lumborum

O: Posterior Iliac Crest

I: Last Rib & Transverse Process of L1-L4

A: 1. Laterally Tilt the Pelvis 2. Laterally Flex the Vertebral Column