Anat P.
Biceps Brachii
Origin: Coracoid process; scapula
Insertion: Raial tuberosity of radius
Action: Flexes and supinates forearm
Rectus Abdominus
Origin: Pubic Crest, symphysis pubis
Insertion: Costal cartilage of ribs
Action: Flexes vertebral column, compresses abdomen
Triceps Brachii
Origin: Scapula; posterior and lateral humerus
Insertion: Olecranon process of ulna
Action: Extends forearm
Extensor Carpi Radialis Brevis
Origin: Lateral epicondyle of humerus
Insertion: 5th metacarpal
Action: Extends and abducts wrists
Longissimus
Origin: Transverse processes of thoracic vertebrae
Insertion: Transverse process of all thoracic vertebrae
Action: Extends Spine
Pronator Teres
Origin: Medial epicondyle of humerus
Insertion: Radius
Action: Pronates forearm
Linea Alba
*Thick tendon running down the middle of the abdomen
External Abdominal Oblique
Origin: Lower eight ribs
Insertion: Iliac crest, Linea Alba, inguinal ligament
Action: Compresses Abdomen, lateral rotation of trunk
Spinalis
Origin: Spinous process of upper lumbar and lower thoracic vertebrae
Insertion: Spinous processes of middle and upper thoracic vertebrae
Action: Extends Spine
Origin: Medial epicondyle of humerus
Insertion: Carpals and metacarpals
Action: Flexes and adducts wrist
Iliocostalis
Origin: Sacrum, crest of ilium, and ribs
Insertion: Ribs and vertebrae
Action: Extends Spine
Gluteus Maximus
Origin: Iliac Crest, sacrum, occyx
Insertion: Gluteal tuberosity of femur
Action: Extends hip and rotates thigh laterally
Brachialis
Origin: Anterior surface of humerus
Insertion: Coronoid process of ulna
Action: Flexes forearm
Brachioradialis
Origin: Lateral supracondylar ridge of humerus
Insertion: Styloid process of radius
Action: Flexes forearm
Origin: Medial epicondyle of humerus
Insertion: Base of 2nd and 3rd metacarpals
Action: Flexes and abducts hand
Extensor Pollicis Longus
Origin: Shaft of Radius
Insertion: Distal phalanx of thumb
Action: Extends thumb
Tensor Fascia Latae
Origin: Anterior superior iliac spine
Insertion: Iliotibial tract to lateral condyle of tibia
Action: Abducts thigh
Piriformis
Origin: Sacrum and ilium
Insertion: Greater trochanter of femur
Action: Laterally rotates extended thigh, abducts flexed thigh
Origin: Medial epicondyle of humerus
Insertion: Palmar Fascia
Action: Flexes wrist
Words From Our Students
"StudyBlue is great for studying. I love the study guides, flashcards, and quizzes. So extremely helpful for all of my classes!"
Alice, Arizona State University
Words From Our Students
"I'm a student using StudyBlue, and I can 100% say that it helps me so much. Study materials for almost every subject in school are available in StudyBlue. It is so helpful for my education!"
Tim, University of Florida
Words From Our Students
"StudyBlue provides way more features than other studying apps, and thus allows me to learn very quickly! I actually feel much more comfortable taking my exams after I study with this app. It's amazing!"
Jennifer, Rutgers University
Words From Our Students
"I love flashcards but carrying around physical flashcards is cumbersome and simply outdated. StudyBlue is exactly what I was looking for!"
Justin, LSU