Practical Exam #4

Vocabulary-style flashcards covering the diaphragm, intercostals, and major hip and forearm muscles with their origin, insertion, and action.

Diaphragm

O: Inner surface of the lower 6 ribs, upper 2–3 lumbar vertebrae, and inner part of the xiphoid process

I: Central tendon

A: Inhalation.

Intercostals

O/I rib-to-rib

A: assist in inhalation and exhalation.

Brachialis

O: Distal 1/2 of the anterior humerus

I: Ulnar tuberosity

A: Flex elbow.

Brachioradialis

O: Lateral supracondylar ridge of the humerus

I: Styloid process of the radius

A: Flex the elbow in neutral position; Assists pronation and supination of forearm.

Flexor Carpi Radialis

O: Medial epicondyle of the humerus

I: Bases of the 2nd and 3rd metacarpals

A: Flex and abduct the wrist.

Flexor Carpi Ulnaris

O: Medial epicondyle of the humerusI: Pisiform (and adjacent carpal)

A: Flex and adduct the wrist.

Extensor Carpi Radialis

O: Lateral epicondyle of the humerus

I: Bases of the 2nd and 3rd metacarpals

A: Extend and abduct the wrist.

Extensor Carpi Ulnaris

O: Lateral epicondyle of the humerus

I: Base of the 5th metacarpal

A: Extend and adduct the wrist.

Gluteus Maximus

O: Coccyx, sacrum, and posterior iliac crest

I: Gluteal tuberosity and IT band

A: Extend the hip, laterally rotate the hip, and abduct the hip.

Gluteus Medius

O: External surface of the ilium

I: Greater trochanter of the femur

A: Abduct the hip.

Piriformis

O: Anterior surface of the sacrum

I: Greater trochanter of the femur

A: Laterally rotate the hip.