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85 Cards in this Set
- Front
- Back
Biceps Brachii is the primary muscle of...
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Forearm Supination
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Biceps Brachii Action (3)
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*Flex the elbow @ humeroulnar joint (like carrying a bowl of soup)
*Supinate the forearm @ radioulnar joints *Flex the shoulder @ glenohumeral joint |
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Biceps Brachii Origin (2)
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Short Head:
*Coracoid process of scapula Long Head: *Supraglenoid tubercle of scapula |
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Triceps Brachii is an antagonist to what muscle...
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Biceps Brachii
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Triceps Brachii Action (3)
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All Heads:
*Extend the elbow @ humeroulnar joint Long Head: *Extend the shoulder @ glenohumeral joint *Adduct the shoulder @ g/h joint |
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Triceps Brachii Origin (3)
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Long Head:
*Infraglenoid tubercle of the scapula Lateral Head: *Posterior surface of proximal half of the humerus Medial Head: *Posterior surface of distal half of the humerus |
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Triceps Brachii Insertion
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Olecranon process of the ulna
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What is the elbow called?
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Olecranon process of the ulna
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Which part of the forearm bulges when you make a muscle?
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Brachioradialis
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What is the bony landmark of the wrist called?
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Extensor crease of the wrist
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What are the knuckles called?
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Metacarphalangeal joints
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The area near the thumb is called...
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Thenar eminence
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The area near the pinky is called...
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Hypothenar eminence
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What are the 3 groups of bones in the wrist and hand?
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1. carpals (8 pebble-sized bones)
2. metacarpals (5 long bones) 3. Phalanges *Thumb has 2 phalanx bones and the fingers have 3 |
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Where is the Pisoform located?
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Medial to wrist
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The Biceps Brachii inserts on which bone of the forearm?
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Radial Tuberosity
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What are the tiny projections of the ulna and radius?
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Styloid process of ulna and radius
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The Brachialis attaches on what bone of the forearm?
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Ulnar tuberosity
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The Brachialis inserts on what bone of the forearm?
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Tuberosity and coranoid process of ulna
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"Knob Hill" trail is...
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A. Olecranon process and fossa
B. Epicondoyles of the humerus C. Supracondylar ridge of the humerus |
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"The Razor's Edge" follows the length of the superficial ulna where?
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A. Olecranon process
B. Shaft of ulna C. Head of ulna D. Styloid process of ulna |
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"Pivot Pass" travels the length of the radius, the bone which creates the pivoting action of the forearm; where?
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A. Lateral epicondoyle of the humerus
B. Head of the radius C. Shaft of the radius D. Styloid process of the radius |
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What are the 4 primary groups of forearm/hand muscles?
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1. Muscles that act primarily at the elbow
2. Muscles that move the wrist and/or fingers 3. Muscles that create the pivoting action between the radius and ulna 4. Short and long muscles that maneuver the thumb (pollicis muscles) |
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Which muscles act primarily at the elbow? (2)
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1. Brachialis
2. Brachioradialis |
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Which muscles move the wrist and/or fingers? (4)
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1. Extensors of wrists and fingers
2. Flexors of wrists and fingers 3. Adductors of the wrist 4. Abductors of the wrist |
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Which muscles create the pivoting action between the radius and ulna? (3)
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1. Pronator teres
2. Pronator quadratus 3. Supinator |
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What does an extensor do?
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Extends
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What does "Carpi" mean?
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Extends the carpals; also indicates there is a different muscle that moves the digits (ex: extensor digitorum)
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What do longus and brevis mean?
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longus- long
brevis- short |
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What are the elbows movements? (2)
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1. Flexion
2. Extension |
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What are the forearm's movements? (2)
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1. Supination
2. Pronation |
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What are the wrist's movements? (4)
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1. Extension
2. Flexion 3. Abduction (radial deviation) 4. Adduction ( ulnar deviation) |
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Radial deviation is also called...
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Abduction
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Ulnar deviation is also called...
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Adduction
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What are the movements of the hands and fingers? (2)
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1. Extension of 2-5 fingers
2. Flexion of the 2-5 fingers (cupping of fingers) |
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What movement does the thumb do?
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Opposition
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Brachialis action:
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Flex the elbow @ humeroulnar joint
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Brachialis Origin:
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Distal half of the anterior surface of the humerus
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Brachialis Insertion:
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Tuberosity and coranoid process of the ulna
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What causes the Brachioradialis to become easily palpable?
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Resisted flexion of the elbow
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Brachioradialis Action (2):
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*Flex the elbow
*Assist to pronate and supinate the forearm when these movements are resisted |
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Brachioradialis Origin:
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Lateral supracondylar ridge of humerus
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Brachioradialis Insertion:
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Styloid process of the radius
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Where are the flexors and extensors located?
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Flexors: anterior/medial (hairless) side
Extensors: Posterior/lateral (hairy) side |
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Which 2 bones can be used as clear dividing lines between the flexors and extensors?
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Brachioradialis and Shaft of ula
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What are the 4 extensors of the wrist and fingers?
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1. Extensor Carpi Radialis Longus
2. Extensor Carpi Radialis Brevis 3. Extensor Carpi Ulnaris 4. Extensor Digitorum |
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What do the 4 extensors primarily do?
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Create extension at the wrists and fingers
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Where are the extensors of the forearm located?
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between the brachioradialis and the shaft of the ulna along the forearms lateral/posterior surface
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Are the extensors smaller than the flexors?
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Yes
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Extensor Carpi Radialis Longus and Brevis Action:
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Extend the wrist @ radiocarpal joint
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Extensor Carpi Radialis Longus and Brevis Origin:
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Lateral epicondoyle of humerus
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Extensor Carpi Radialis Longus and Brevis Insertion:
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Metacarpals
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Extensor Carpi Ulnaris Action:
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Extend the wrist @ radiocarpal joint
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Extensor Carpi Ulnaris Origin:
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Lateral Epicondoyle of humerus
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Extensor Carpi Ulnaris Insertion:
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Metacarpals
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Extensor Carpi Radialis Longus and Brevis / Extensor Carpi Ulnaris A.O.I.
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A: Extend the wrist @ radiocarpal joint
O: Lateral Epicondoyles of humerus I. Metacarpals |
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Which muscles are collectively known as the "wad of 3"?
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*Brachioradialis
*Extensor Carpi Radialis Longus/Brevis |
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Where are the flexors of wrist and fingers located?
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On the forearms anterior/medial surface; between brachioradialis and the ulnar shaft
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Where do most of the flexors of wrist/hand originate?
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from the common flexor tendon at the medial epicondoyle of the humerus
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Flexor carpi radialis Action:
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Flex the wrist @ radiocarpal joint
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Flexor carpi radialis Origin:
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Common flexor tendon from medial epicondoyle of humerus
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Palmaris Longus Action:
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Flex the wrist @ radiocarpal joint
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Palmaris Longus Origin:
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Common flexor tendon from medial epicondoyle of humerus
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Flexor Carpi Ulnaris Action:
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Flex the wrist @ radiocarpal joint
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Flexor Carpi Ulnaris Origin:
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Humeral Head
* Common flexor tendon from medial epicondoyle of humerus |
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Flexor Digitorum Superficialis Action:
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Flex the wrist @ radiocarpal joint
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Flexor Digitorum Superficialis Origin:
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Common flexor tendon from medial epicondoyle of humerus
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Flexor Carpi Radialis, Palmaris Longus, Flexor Carpi Ulnaris, and Flexor Digitorum Superficialis all share an action and origin of what?
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A: Flex the wrist @ radiocarpal joint
B: Common flexor tendon from medial epicondoyle of humerus |
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Pronator Teres is the only muscle that...
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Runs diagonal on anterior forearm
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What is a good landmark for locating the Pronator Teres?
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The distal tendon of biceps brachii
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Pronator Teres Action:
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Pronate
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Pronator Teres Origin:
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Common flexor tendon from medial epicondoyle of humerus
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Pronator Teres Insertion:
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Middle of lateral surface of the radius
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Pronator Quadratis is a muscle with how many sides?
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4
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Pronator Quadratus Action:
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Pronate the forearm
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What does the Supinator do?
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Supinates the forearm and is an antagonist to the pronator teres
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What muscle is an antagonist to the Pronator Teres?
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Supinator
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Supinator Action:
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Supinates Forearm
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How many muscles move the thumb and how many groups can they be divided into?
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8 muscles move the thumb; they can be divided into 2 groups: short and long.
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Where are the 4 short muscles that move the thumb located?
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Thenar Eminence
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Where are the 4 long muscles that move the thumb located?
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Originate along the shafts of the radius and ulna
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Where is the Hypothenar Eminence?
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Opposite the thenar eminence, along the ulnar side of the palm
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What does the Annular Ligament do?
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Wraps around the head and neck of the radius, stabilizing the proximal radius against the ulna during pronation and supination
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Where is the Ulnar Nerve (funny bone) located?
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Passes between the medial epicondoyle and olecranon process as it extends down the forearm
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What is Retinaculum?
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Thickening of fascia and holds tendons of flexors and extensors in place
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