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61 Cards in this Set

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What are the 2 compartments of the arm?

Anterior/Flexor compartment and Posterior/Extensor compartment.

To do with action or position.


What does the anterior compartment contain?


1. Biceps Brachii


2. Brachialis


3. Coracobrachialis


BBC

What is the function of Biceps Brachii?

Suppination of the Forearm and flexes arm at the elbow and shoulder.


Opening a bottle with a corkscrew

What is the function of the Brachialis?


1. Upper arm muscle that flexes the elbow joint.


2. Assists Biceps Brachii to flex at elbow.


3. Partially makes up floor of Cubital Fossa


Cubitus=Elbow (Latin),


BB help, movement

What is the function of the Coracobrachialis?

1. Flexes and adducts the arm at the Glenohumural joint.


2. Resists deviation of the arm during abduction (from the frontal plane)

It both draws the humerus forward, (causing shoulder flexion) also draws the humerus toward the torso, causing shoulder adduction

What are these muscles innervated by?

The Musculocutaneous Nerve

It's Cute


Where does the nerve arise from? Blood Supply?


5th and 6th Cervical Spinal Nerves; Brachial Artery


Latin for 'of the hand'?

What does the posterior compartment contain?

Triceps Brachii

Wussy :-(

What is the function of the Triceps Brachii

The Triceps Brachii performs extension of the arm at the elbow.


What is this muscle innervated by? Blood Supply?
The Radial Nerve (C6, C7, C8, mainly C7); The Profunda Brachii/Deep Brachial Artery

Radical Dude

What are the bones of the upper limb?

Clavicle, Scapula, Humerus, Ulna, Radius, Carpal Bones, Metacarpal Bones, Phalanges

Carpus=Wrist (Latin)


Phalanx: Line of Soldiers

Name the Carpal Bones (Lateral to Medial)


Proximal: scaphoid, lunate, triquetrum, pisiform


Distal: trapezium, trapezoid, capitate, hamate

Scaphoid: Bone-Shaped


Lunate: Moon shaped (longitu.)


Pisiform: Pea-shaped


Trapezium: "the thumb swings on the trapezium"


Capitate: largest carpal bone


She Looks Too Pretty, Try Catch Her

What are the Base, Body and Head of the Metacarpals and Phalanges?


Base: Proximal End (articulates with carpal/metacarpals)


Body/Diaphysis: Slender shaft


Head: Distal End, Usually articulates with .


What muscles make up the


Rotatory Cuff?

Supraspinatus, Infraspinatus, Teres Minor, Subscapularis

SITS

What is the function of Rotatory Cuff muscles?

1. They all stabilise the Glenohumeral Joint


2. Individually, they function as rotors of the humerus


3. Exception: Supraspinatus initiates abduction of the arm

Stabilise...

Define Brachial Plexus.

A complex network of nerves which arises from the neck and extends into the Axilla where it mostly branches out.

Supplies the Upper Limb the most

Roots of the Brachial Plexus are formed from the...

Anterior Rami of Spinal nerves: C5, C6, C7, C8 and T1

Cervical and Thoracic nerves

What is the Brachial Plexus divided into?

Roots, Trunks, Divisions, Cords and Branches

Reach To Drink Cold Beer; Draw 3 Ys (Middle Reflected), X between C5 &C6

What nerves are found on the Superior Trunk? Innervations?

Subclavius Nerve (Subclavius Muscle); Suprascapular Nerve (Supraspinatus and Infraspinatus muscles)

S-nerves

Which nerve is found near the root of C5 and what does it innervate?

Dorsal Scapular Nerve (Rhomboid Major and Rhomboid Minor)

DSN

What nerve arises from the roots of C5, C6 and C7? Innervation?

Thoracic Nerve (of Bell); Serratus Anterior Muscle

C5, 6, 7 Bells of Heaven, Pointing to heaven needs this muscle to contract

What are the five terminal nerves?

Musculocutaneous, Axillary, Radial, Median and Ulnar nerves.

MARMU

What are the nerves found on the Medial Cord? Innervations?

1. Medial (Antebrachial) Cutaneous Nerve of the Forearm. (Skin)


2. Medial (Brachial) Cutaneous Nerve of the Arm. (Skin more medial)


3. Medial Pectoral Nerve (Pectoralis Major and Minor Muscles)

M-Nerves


Note: Lateral Pectoral Nerve innervates Pec M. From Lateral Cord!


Cutaneous: relating to or affecting the skin.

What are the nerves of the Posterior Division? Innervations?

Upper (Subscapularis muscle) and Lower (Subscapularis and Teres Major) Subscapular nerves, Thoracodorsal (Latissimus Dorsi Muscle), Radial (a lot) and Axillary (Deltoid and Teres Minor)

ULTRA

What are the 3 categories of the anterior compartment of the forearm?

Superficial, Intermediate and Deep

SID, muscles mostly perform flexion and pronation

What are the superficial muscles?

1. Flexor Carpi Ulnaris


2. Palmaris Longus


3. Flexor Carpi Radialis


4. Pronator Teres

Place thumb on their Origin (Medial Epicondyle) and 4 fingers on forearm. From Medial (pinky) to Lateral (index): FPFP

What is the 1. Function, 2. Origin, 3. Attachment and 4. Innervation of the Flexor Carpi Ulnaris?

1. Flexion and Adduction of the wrist.


2. Medial Epicondyle and Ulna


3. Pisiform of Carpus


4. Ulnar Nerve

Pinky

What is the 1. Function, 2. Origin, 3. Attachment and 4. Innervation of the Palmaris Longus?

1. Flexion at the wrist


2. Medial Epicondyle


3. Flexor Retinaculum of wrist


4. Median Nerve

Ring, Just distal to the wrist, reflecting back PL will find you the median nerve underneath it.

What is the 1. Function, 2. Origin, 3. Attachment and 4. Innervation of the Flexor Carpi Radialis?

1. Flexion and Abduction of the wrist


2. Medial Epicondyle


3, Base of Metacarpals II and III


4. Median

Middle

What is the 1. Function, 2. Origin, 3. Attachment and 4. Innervation of the Pronator Teres?

1. Pronation of the Forearm


2. Medial Epicondyle and Coronoid Process (Ulna)


3. Mid-shaft of Radius


4. Median

Index, its lateral border forms the medial border of the Cubital Fossa

What is the Cubital Fossa?

An area of transition between anatomical arm and forearm

Located as a depression on anterior surface of elbow joint, 'anatomical triangle' appearance

The Cubital Fossa is triangular in shape, what are its borders?

1. Lateral Border (Medial border of Brachioradialis Muscle)


2. Medial Border (Lateral border of Pronator Teres Muscle)


3. Superior Border (imaginary line between the Humerus' Epicondyles)

Floor: Prox. by Brachialis and Dis. by Supinator Muscle


Roof: Skin and Fascia Bicipital Aponeurosis reinforces it.


Note: Within the Roof is the Median Cubital Vein (Venipuncture site)

What are the contents of the Cubital Fossa? (4)

1. Radial Nerve (near it)


2. Biceps Tendon (Attaches to Radial Tuberosity)


3. Brachial Artery (bifurcates into Radial and Ulnar at apex of CF)


4. Median Nerve (Supplies flexor muscles in forearm)

Really Need Beer To Be At My Nicest

List the clinical relevance of the Cubital Fossa

1. Brachial Pulse: palpating medial to biceps tendon to feel


2. Blood Pressure: Stethoscope placed here for Korotkoff sounds


3. Venipuncture: Median Cubital Vein is superficial and accessible

Median Cubital Vein connects Basilic and Cephalic veins

Which muscle is in the Intermediate Compartment?

The Flexor Digitorum Superficialis

Sometimes classed as Superficial, but often deeper in Cadavers


Note: Anatomical Landmark; Median and Ulnar Nerve pass between 2 heads and travel posteriorly.

What is the 1. Function, 2. Origin, 3. Attachment and 4. Innervation of the Flexor Digitorum Superficialis?

1. Flexes Metacarpophalangeal, prox. interphalangeal joints (at the 4 fingers) and wrist


2. 2 heads; Medial Epicondyle and Radius


3. Attaches to middle phalanges of 4 fingers


4. Median Nerve

The muscle splits into four tendons at wrist which travel down carpal tunnel.

What are the muscles of the deep compartment?

1. Flexor Digitorum Profundus


2. Flexor Pollicis Longus


3. Pronator Quadratus

Profundus: Deep


Pollicis: from Pollex (Thumb)


Quadratus: roughly Square or rectangular

What is the 1. Function, 2. Origin, 3. Attachment and 4. Innervation of the Flexor Digitorum Profundus?

1. The only muscle that can flex the distal interphalangeal joints (fingers). Also flexes at metacarpophalangeal joints and at the wrist.


2. Ulna and associated interosseous membrane


3. Distal phalanges of the four fingers


4. A) Medial half: Ulnar nerve


B) Lateral half: Median nerve

Anterior interosseous branch of the median nerve

What is the 1. Function, 2. Origin, 3. Attachment and 4. Innervation of the Flexor Digitorum Profundus?

1. The only muscle that can flex the distal interphalangeal joints (fingers). Also flexes at metacarpophalangeal joints and at the wrist.


2. Ulna and associated interosseous membrane


3. Distal phalanges of the four fingers


4. A) Medial half: Ulnar nerve


B) Lateral half: Median nerve

anterior interosseous branch of the median nerve

What is the 1. Function, 2. Origin, 3. Attachment and 4. Innervation of the Flexor Pollicis Longus?


1. Flexes the interphalangeal joint and metacarpophalangeal joint of the thumb


2. Anterior surface of the radius and surrounding interosseous membrane


3. Base of the distal phalanx of the thumb


4. Median nerve

Median nerve (anterior interosseous branch)

What is the 1. Function, 2. Origin, 3. Attachment and 4. Innervation of the Flexor Digitorum Profundus?

1. The only muscle that can flex the distal interphalangeal joints (fingers). Also flexes at metacarpophalangeal joints and at the wrist.


2. Ulna and associated interosseous membrane


3. Distal phalanges of the four fingers


4. A) Medial half: Ulnar nerve


B) Lateral half: Median nerve

anterior interosseous branch of the median nerve

What is the 1. Function, 2. Origin, 3. Attachment and 4. Innervation of the Flexor Pollicis Longus?


1. Flexes the interphalangeal joint and metacarpophalangeal joint of the thumb


2. Anterior surface of the radius and surrounding interosseous membrane


3. Base of the distal phalanx of the thumb


4. Median nerve

Median nerve (anterior interosseous branch)

What is the 1. Function, 2. Origin, 3. Attachment and 4. Innervation of the Pronator Quadratus


1. Pronates the forearm


2. Anterior surface of the Ulna


3. Anterior surface of the Radius


4. Median nerve

A square shaped muscle, found deep to the tendons of the FDP and FPL.



Median nerve (anterior interosseous branch)

Superficial Compartment

Intermediate Compartment

Deep Compartment

Do the Reflex Dance!!

S1, S2: Ankle Reflex


L3, L4: Knee Reflex


C5, C6:BicepsReflex


C7, C8: Triceps Reflex

Ankle


Knee


Biceps


Triceps

What does the Axial Skeleton/Appendicular Skeleton consist of?

Axial: Bones of the Head (Skull/Cranium), Neck (Cervical Vertebrae) and Trunk (Ribs, Sternum, Vertebrae and Sacrum)

What does the Appendicular Skeleton consist of?
Appendicular: Bones of the Limbs (including those forming the Pectoral and Pevic Girdles)
Pectoral Girdle: Clavicle and Scapular
Where is the Clavicle (collarbone) located?
Extends between the Manubrium of the sternum and the Acromion of the Scapula
Classified as a Long Bone, S-Shaped
What is the Clavicle's Function?

1. Attaches the upper limb to the trunk.


2. Protects the underlying neurovascular structures supplying the upper limb.


3. Transmits shocks (traumatic impacts) from the upper limb to the axial skeleton

Attaches Axial Skeleton to Appendicular Skeleton.
What is the common fracture site of the Clavicle?
The Junction of the medial 2/3 and lateral 1/3. After fracture, the lateral end of the clavicle is displaced inferiorly by the weight of the arm, and medially, by the Pectoralis Major. The medial end is pulled superiorly, by the sternocleidomastoid muscle.
Most commonly fractured bone; from fall onto shoulder or outstretched hand
What are the consequences of the Clavicular Fracture?
Damage results in unopposed medial rotation of the upper limb – the ‘waiters tip’ position/Erb's Palsy
The Suprascapular nerves (medial, intermedial and lateral) may be damaged by the upwards movement of the medial part of the fracture. They innervate the lateral rotators of the upper limb at the shoulder.

What are the functions of the Scapular?


1. It articulates with the Humerus at the Glenohumeral joint,


2. It articulates with the clavicle at the acromioclavicular joint.


(In doing so, the scapula connects the upper limb to the Trunk)


3. Attachment site of 17 muscles

The Shoulder joint is dislocated anteriorly, everything else is posteriorly dislocated.


What does the Costal (Anterior) Surface of the Scapular have?

1. Subscapular Fossa


2. Superolateral surface has Corocoid Process (Attachment site of Short head of BB, Pec.)

Anterior surface of the scapula is termed ‘costal’; as it's the side facing the ribcage.
What does the Lateral Surface of the Scapular have?

1. Glenoid Fossa


2. Supraglenoid tubercle


3. Infraglenoid tubercle

1. Articulates with Humerus to form Glenohumeral joint.


2. Attachment site of long head of BB


3. Attachment site of long head of TB

What does the Posterior Surface of the Scapular have?

1. Spine


2. Infraspinous Fossa


3. Supraspinous Fossa

1. It runs transversely across the scapula, dividing the surface into two.


2. Area below spine


3. Area above spine



What does the Subclavian artery go through to become the Axillary artery?

The lateral border of the 1st rib


Not Clavicle

Where does the Axillary nerve run? Innervates?

1. Behind the Surgical Neck of the Humerus


2. Deltoids ad Teres Minor

Shoulder, Surgical Neck Fracture: No abduction of arm (15 to 90 degrees prevented)

The Median Nerve Runs Anterior to...


Innervates...

1. The Elbow


2. Thenar Eminence, Lateral 3 and a 1/2 finger tips.

THenaR: Thumb via Recurrent Branch. Thenar Atrophy
The Median Nerve's injured to function may lead to Carpal Tunnel Syndrome. Suspected by...

1. Myxedema


2. Edema


3. Diabetes


4. Idiopathic


5. Acromegaly


6. Neoplasm


7. Trauma


8. Rhumatoid Arthritis


9. Amyloidosis


10. Pregnancy

MEDIAN TRAP
Where is the Radial Nerve located? Innervations? Injured by?

1. Posterior part of the Arm, Radial Groove.


2. Triceps, Brachioradialis and Extensors of the Wrist. Medial 3 and a 1/2 below finger tips.

Injured by the fracture of the body of the Humerus, Saturday Night Palsy (Compression of Axilla i.e. Crutches): Causes wrist drop.

Ulnar Nerve runs...


Injured by...

1. Posterior to the Medial Epicondyle.


2. Medial Epicondyle and Hook of Hamate Fracture.

Results in the inability to adduct or abduct fingers.


In Ulnar Claw Hand U can't extend the 4th & 5th digits open from fist.