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PT 620 Flexor 4arm
| Question | Answer |
|---|---|
| On the dorusm of the hand the fascia is _______ and ________ to allow for movement of the skin | thin and loose |
| On the palmar surface of the hand the superfiscial fascia blends with the _________ _________ and is ________ forming flexor lines of the skin | deep fascia, dense |
| Wha tis enclosed in the antebrachial(deep) fascia | flexors and extensors of the forearm in a cylindrical sheath |
| The deep fascia attaches along the length of the _______ border of the ______ and sends a septum to the ___________ dividing the forearm into flexor and _________ croups | subcutaneous, ulna, radius, extensor |
| Name the cutaneous innervation of the forearm | 1. Posterior antebrachial 2. Medial antebrachial 3. Lateral antebrachial |
| Which cutaneous nerve is branch of the radial n.? medial cord? continuation of musculocutaneous? | 1. Posterior antebrachial 2. medial antebrachial 3. lateral antebrachial |
| Name the four superficial muscles of the forearm. | 1. Pronator Teres 2. Flexor Capitis Radialis 3. Palmaris Longus 4. Flexor Carpi Ulnaris |
| What muscles originates on the medial epicondyle and goes to the palmar aponeurosis? | Palmaris Longus |
| What muscle has 2 heads and one origiantes on the medial epicondyle and the other on the coronoid process of the ulna? | pronator teres |
| What muscle originates on the medial epicondyle and goes to the base of the 2nd metacarpal? | flexor carpi radialis |
| What muscle insets mid radius? | pronator teres |
| What muscle has two heads one that attaches to the medial epicondyle and the other head to the posterior border of the upper ulna? | flexor Carpi Ulnaris |
| What muscle's action is pronation of forearm, weak flexor of elbow? | Pronator Teres |
| What is the action of Flecor Carpi radialis? | wrist flexion, radial deviation |
| What muscle inserts on the pisiform, hamate, bse of 5th metacarpal? | Flexor Carpi Ulnaris |
| What muscle just does wrist flexion? | palmaris longus |
| What muscle does wrist flexion and ulnar deviation? | Flexor carpi ulnaris |
| What myotome is responsible for wrist flexion? | C7 |
| What muscle is i the intermediate layer of the forearm? | flexor digitorum superficialis |
| Where do the two heads attach? | 1. medial epicondyle, coronoid process of ulna 2. upper radius |
| The tendons lie in a ________ ______ under _______ retinaculum shared with waht muscle? | common sheath, flexor, flexor digitorum profundus |
| Where are the middle and ring finger tendons in relation to the index and little finger tendons? | above |
| The 4 tendons of the flexor digitorum superficialis inserts on each side of the base of the __________ _____________. | middle phalanx |
| Why do the flexor digitorum superficialis tendons split? | to allow the flexor digitorum profundus tendons to pass through |
| What nerve innervates the flexor digitorum superficialis muscle? | median |
| What muscle flexes the proximal interphalangeal joint? | flexor digitorum superficialis |
| Name the three muscles of the Deep Layer of the forearm | 1. Flexor Pollicus Longus 2. Flexor Digitorum 3. Pronator Digitorum Profundus |
| What muscle originates from the middle radius and interosseus membrane? | flexor pollicis longus |
| what muscle originates on the distal ulna and goes to the distal radius? | pronator quadratus |
| What muscle origintaes on the upper 3/4 of the ulna and interosseus membrane? | Flexor digitorum profundus |
| What muscle inserts on the base of the distal phalanx of the thumb? | flexor pollicis longus |
| What muscle inserts on the base of the distal phalanx? | flexor digitorum profundus |
| What muscle goes from the middle radius and interosseus membrane and goes to the base of the distal phalanx of thumb? | flexor pollicis longus |
| What muscle goes from the upper 3/4 of ulna and interosseus membrane to the base of distal phalanx? | flexor digitorum profundus |
| The flexor digitorum profundus is dually innervated by what nerves? | 1. median (to digits 2 and 3) 2. ulnar n. (to digits 4 and 5) |
| The median n. (alone) innervates what two muscles? | flexor pollicus longus and pronator quadratus |
| What branch of the median nerve innervates all three of the forearm deep layer muscles? | anterior interosseus n. |
| What muscle flexes the distal phalanx of thumb (as well as proximal phalanx)? | flexor pollicis longus |
| what is the action of the flexor digitorum profundus? | flexes distal phalanx |
| Pronation of the forearm is done by what muscle? | pronator quadratus |
| All the muscles of the forearm are innervated by median n., except... | 1. flexor carpi ulnaris 2. ulnar 1/2 of flexor digitorum profundus |
| The flexor carpi ulnaris and ulnar 1/2 of flexor digitorum profundus are innervated by... | ulnar n. |
| The median n. has what spinal cord segments in it? | C6-T1 |
| The median n. runs medial to what artery in the cubital fossa? | brachial artery |
| The median nerve through the heads of what muscle? | pronator teres |
| The median nerve runs deep to what muscle? | flexor digitorum superficialis |
| The median nerve gives off what branch to the deep group? | anterior interosseus |
| Last, The median nerve passes under the _______ __________ | flexor retinaculum |
| The ulnar nerve contains what nerve fibers? | C8-T1 |
| 1. The ulnar nerve passes behind the ________ ________ | medial epicondyle |
| 2. The ulnar n. passes through the heads of what muscle? | flexor carpi ulnaris |
| 3. Then the ulnar n. passes between what two muscles? with what artery? | flexor carpi ulnaris and flexor digitorum profundus with the ulnar artery |
| 4. The ulnar n. and ulnar artery cross anterior to what? near the ________ bone in Guyon's canal | flexor retinaculum, pisiform |
| The radial n. has what nerve fibers in it? | C5-T1 |
| The deep branch of the radial n. pierces what muscle to go to the __________ forearm. | supinator, extensor |
| The superficial branch of the radila n. runs deep to what muscle? the on the radial side of what artery? | brachioradialis, radial |
| The radial nerve ends by providing cutaneous innervation to what? | dorsum of the hand |
| The brachial artery divides at what into two terminal branches? | level of the neck of the radius |
| What are the two branches of the brachial artery? | 1. ulnar 2. radius |
| The radial artery runs under what muscle? | brachioradialis |
| The radial artery runs ________ around the wrist to the ________ of the hand | laterally, dorsum |
| 1. The ulnar artery goes from the _________ fossa, passes deep to _________ head of the _________ _________. | cubital, ulnar, pronator teres |
| 2. The ulnar artery passes deep to what muscle? | flexor digitorum superficialis |
| 3. Then the ulnar a. runs with what n.? between what two muscles? | ulnar, flexor carpi ulnaris and flexor digitorum profundus |
| The ulnar artery branches off into what? | common interosseus |
| The common interosseus artery branches in to what two arteries? | anterior and posterior interosseus |
| The ulnar artery crosses anterior to what? with what nerve? | flexor retinaculum, ulnar n. |
| The flexor retinaculum is a ________ thickening of the deep fascia. | distal |
| The flexor retinaculum is also known as... | transverse carpal ligament |
| The flexor retinaculum is distinct and deeper to what ligament? | palmar carpal |
| The flexor ret. attaches to what? | carpals |
| It converts the carpal groove into the... | carpal tunnel |
| What is the tendon of the flexor carpi radialis? | palmar longus |
| What is deep to the retinaculum? | 1. median nerve 2. tendons of flexor digitorum profundus and superficialis 3. tendon of flexor pollicis longus |
| Name the four joints of the wrist. | 1. Distal Radioulnar Joint 2. radiocarpal joint 3. Midcarpal joint 4. carpometacarpal joints |
| The distal radioulnar joint is in a __________ joint cavity. | seperate |
| what separates the radioulnar joint from the radiocarpal joint? | articular disc |
| where is the radiocarpal joint located? | between radius, articular disc and scaphoid, lunate and triquetral |
| What are the ligaments of the radiocarpal joint? | 1. Radial collateral 2. Ulnar collateral |
| The midcarpal joints are held together by what? | intercarpal ligaments |
| The 1st metacarpal articulates with? | trapezium |
| The 2nd metacarpal articulates with? | trapezoid |
| The 3rd metacarpal articulates with? | capitate |
| The 4th and 5th metacarpal articulate with? | hamate |
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