Upper Limbs Flashcards
Directly opens to the base of the neck
Major structure pass from the neck to the arm through the ___
Axilla
Major arteries and nerves pass through this area
Muscles cross and attach.
Cubital Fossa
Gateway to the palm of the hand.
Tendons, blood vessles, nerves all pass through this area.
Carpal Tunnel
What are the 3 function of the upper limbs?
- position hand (highly mobile)
- Hand as mechanical tool (grip & manipulation)
3.Has as sensory tool (discriminate objects, SENSORY)
Adduction/Abduction
Protraction/Retraction
Flexion/Extension
Medial/lateral rotation
Circumduction
Pronation/suponation
The bone that connects the clavicle to the humerus.
Scapula
Bone attaching sternum to scapula. Only bone attaching arm to body
Clavicle
Bone of upper limb
Hummerus
Bone in forearm medial.
Ulna
Bone in forarm. Lateral
Radius
wrist, 8 bones
Carpals
Palm, 5 bones
metacarpals
Fingers
Phalanges
Anterior arm acts as a _____?
Flexor, bring arm forearm up to elbow
Poster arm acts as an ___?
Extensor, extends straight at elbow
Anterior forearm acts as an?
Flexor at the wrist, brings hand up to ward body
Posterior forearm acts as a?
Extensor, helps open fingers & extend wrist
Muscles solely in hand (both orgin & insertion) allow for fine & controlled movements.
Thenar eminence
Intrinsic muscles of Hands
Bundle of nerves in the upper right in clavicle, scapula, first rib, and into axial
Brachial Plexus
What are the 5 root levels of which the brachial plexus originates from. Anterior rami
C5, C6, C7, C8, T1
Cord of brachial plexus that runs lateral to axillary artery
Lateral Cord
Cord of brachial plexus that runs posterior to axillary artery
Posterior cord
Cord of brachial plexus that runs medial to axillary artery
medial cord
What are the 5 terminal branches of the brachial plexus?
-Musulocutaneous nerve
-Meidan nerve
-Radial nerve
-Axillary nerve
-Ulnar nerve
Innervates anterior arm compartments; FLEXORS
Musulocutaneous nerve
Innervates anterior FORearm compartments; FLEXORS. (wrist, theynar muscles)
Median nerve
Innervates posterior aspect of arm top to bottom. EXTENSOR
Radial nerve
What nerve damage results in no ability to extend arm?
Radial nerve damage
What never innervates upper arm, deltoid?
Axillary never
What nerve innervates all intrinsic muscles of hand BESIDES theynar muscle group
Ulnar nerve
The axillary nerve is underneadth & wraps around the surgical neck of the _____
Hummerus
Damage to the hummers can result in damage to what nerve?
The axillary nerve
Radial nerve runs through the midline o the ____
Midline of the hummerus
Fracture at the midline of the humerus can result in damage to what nerve?
Radial nerve
Ulnar nerve comes down the medial side of the medial _____ of the hummerus (funny bone in elbow)
Medial epicondyle of hummerus
Damage to the funny bone= damage to what nerve?
Damage to ulnar nerve
Shoulder muscle, attaches to clavicle & scapula, and hummerus.
Deltoid
What innervates the deltoid and what movement?
Innervation= axillary nerve
Flexion= adduct shoulder
Muscle that attaches to humerus, clavicle head, and sternocostal head.
Pectoralis major
What movement of pectorals major?
Flexion, adduction & medial rotation of the humerus.
Muscles attaches to ribs 3,4,5 & corroniid process of scapula
Pectoralis minor
What movement of pectoralis minor?
Flex= depress coronoid process; ie bring scapula down.
Artery that comes out over rib 1 and turns into axillary artery
Subclavian artery
What part of axillary artery is beneath pec minor
Part 2
What part of axillary artery comes out from under pec minor?
Part 3
What artery does the axillary artery turn into after part 3
Brachial artery; down humerus.
What musculature makes up the brachium (upper arm) ?
Biceps, brachialis, triceps
Anterior muscle of upper arm, flex & supination of elbow.
Biceps
What nerve would be damaged if biceps not working?
Musculocutaneous nerve (Anterior arm!!)
Muscle that attaches on the hummers and ulna. Flexes hand
Brachialis
Muscle on posterior of arm. Extensor.
Triceps
What nerve would be damaged if triceps not working?
Radial nerve
Vein running medially in the brachium, penetrates deep fascia
Basilic vein
Vein running laterally in the brachium, more superficial
Cephalic Vein
BIG vein in brachium
Median Cubital Vein
Very superficial tendon, comes off biceps and passes out medially across brachial artery/median nerve
Bicipital Aponeurosis
What two arteries does the brachial artery break into at the cubital fossa?
Ulnar artery (runs medially), radial artery (run laterally)
Nerve under cubital fossa
Median nerve
Nerve that passes through cubital fossa and goes posterior to innervate posterior extensors
Radial nerve
Nerve that innervates everything anterior in hand, goes into carpal tunnel and exits on the other side (palm)
Median nerve
Nerve that does not go into carpal tunnel, innervates the forearm instead
Ulnar nerve
What tendon goes over the carpals to close the tunnel?
Flexor retinaculum
What would happen if you cut the median nerve at carpal tunnel?
All downstream mobility is severed, loos mobility of rest of hand.
Artery int he anatomical snuffbox (by thumb on wrist)
Radial artery