Lab 4: Shoulder Region, Arm & Cubital Fossa

Front 1

What muscles make up the Rotator Cuff?

Back 1

SItS:
SUPRASPINATUS
INFRASPINATUS
TERES MINOR
SUBSCAPULARIS

Front 2

What does the SUPRASPINATOUS do?

Back 2

Initiates and assists deltoid in the first 15 degrees of Abduction of the arm.

Front 3

What Innervates SUPRASPINATOUS?

Back 3

SUPRASCAPULAR NERVE

Front 4

_INFRASPINATOUS_

Back 4

Origin: INFRASPINOUS FOSSA
Insert: Middle facet of greater tubercle of HUMERUS
Action: Lateral Rotation of HUMERUS
Innervation: Suprascapular

Front 5

_TERES MINOR_

Back 5

Origin: Lateral border of SCAPULA
Insert: Inferior facet of greater tuberosity of HUMERUS
Action: Lateral arm rotation
Innervate: AXILLARY NERVE

Front 6

Where does SUBSCAPULARIS originate?

Back 6

SUBSCAPULAR FOSSA

Front 7

Where does SUBSCAPULARIS Insert?

Back 7

Lesser Tubercle of HUMERUS

Front 8

What is the action of SUBSCAPULARIS?

Back 8

Medially rotates and adducts arm.

Front 9

What Innervates SUPSCAPULARIS?

Back 9

Upper and Lower SUBSCAPULAR NERVE

Front 10

Where does TERES MAJOR Originate?

Back 10

Dorsal surface of inferior angle of SCAPULA

Front 11

Where does TERES MAJOR Insert?

Back 11

Medial lip of the intertubercular sulcus.

Front 12

What is the action of TERES MAJOR?

Back 12

Adducts and medially rotates arm. Extends arm from flexed position.

Front 13

What innervates TERES MAJOR?

Back 13

Lower SUBSCAPULAR NERVE

Front 14

What is in the QUADRANGULAR SPACE?

Back 14

AXILLARY NERVE
POSTERIOR CIRCUMFLEX HUMERAL ARTERY

Front 15

What is in the HUMERAL TRIANGULAR SPACE?

Back 15

PROFUNDA BRACHII ARTERY and VEIN
RADIAL NERVE

Front 16

What is in the SCAPULAR TRIANGULAR SPACE?

Back 16

CIRCUMFLEX SCAPULAR ARTERY and VEIN

Front 17

What is the Origin of the DELTOID?

Back 17

Anterior fibers: CLAVICLE
Intermediate fibers: ACROMION Process
Posterior fibers: Spine of SCAPULA

Front 18

What is the Insertion of the DELTOID?

Back 18

DELTOID Tuberosity

Front 19

What is the Action of the DELTOID?

Back 19

Anterior fibers: Flexion of arm
Intermediate fibers: Abduct arm from 15 - 90 degrees
Posterior fibers: Extension of arm

Front 20

What Innervates the DELTOID?

Back 20

AXILLARY NERVE

Front 21

What is the Origin of the SUBSCAPULARIS?

Back 21

SUBSCAPULAR FOSSA

Front 22

What is the Insertion of the SUBSCAPULARIS?

Back 22

Lesser Tubercle

Front 23

What is the Action of the SUBSCAPULARIS?

Back 23

Medially rotates and adducts arm

Front 24

What Innervates SUBSCAPULARIS?

Back 24

Upper and Lower SUBSCAPULAR NERVE

Front 25

What is significant about the Surgical Neck of the HUMERUS?

Back 25

It is the most frequent fracture site of proximal end of HUMERUS.
Fracture may cause injury to AXILLARY NERVE & POSTERIOR CIRCUMFLEX HUMERAL VEIN/ARTERY.

Front 26

What are the names of the INTERMUSCULAR SEPTA?

Back 26

Medial & Lateral

Front 27

What muscles are responsible for Flexion of arm?

Back 27

BICEPS BRACHII
CORACOBRACHIALIS
BRACHIALIS

Front 28

What muscles are responsible for Extension of the arm?

Back 28

TRICEPS BRACHII
ANCONEUS

Front 29

What are the Origins of the BICEPS BRACHII?

Back 29

Long head: Supraglenoid tubercle of SCAPULA
Short head: CORACOID PROCESS

Front 30

Where does the BICEPS BRACHII Insert?

Back 30

Postero-medial aspect of the RADIAL TUBEROSITY of the RADIUS.

Front 31

What is the Origin of CORACOBRACHIALIS?

Back 31

CORACOID PORCESS of SCAPULA

Front 32

Where does CORACOBRACHIALIS Insert?

Back 32

Anterior aspect of the superior third of shaft of HUMERUS

Front 33

What is the Origin of BRACHIALIS?

Back 33

Anterior aspect of lower half of the shaft of humerus
Lateral & Medial intermuscular septa

Front 34

Where does BRACHIALIS INsert?

Back 34

Anterior aspect of the CORONOID PROCESS
TUBERSOSITY of ULNA

Front 35

What Innervates BICEPS BRACHII?

Back 35

MUSCULOCUTANEOUS

Front 36

What Innervates CORACOBRACHIALIS?

Back 36

MUSCULOCUTANEOUS

Front 37

What Innervates BRACHIALIS

Back 37

MUSCULOCUTANEOUS and RADIAL NERVE

Front 38

What Innervates the Extensors of the ARM?

Back 38

The RADIAL NERVE innervates both TRICEPS BRACHII and ANCONEUS Muscles.

Front 39

What are the branches of the BRACHIAL ARTERY?

Back 39

PROFUNDA BRACHII
NUTRIENT HUMERAL
SUPERIOR ULNAR COLLATERAL
INFERIOR ULNAR COLLATERAL

Front 40

Why can you ligate the BRACHIAL ARTERY without producing tissue damage?

Back 40

Anastamosis via INFERIOR and SUPERIOR ULNAR COLLATERAL ARTERIES.

Front 41

Where is the stethoscope placed to read Arterial blood pressure?

Back 41

Medial to Biceps tendon in the CUBITAL FOSSA.

Front 42

What are the Veins of the arm?

Back 42

BRACHIAL
CEPHALIC
BASILIC
MEDIAN CUBITAL

Front 43

Which vein is used in Venepuncture?

Back 43

MEDIAN CUBITAL which serves as communication between CEPHALIC and BASILIC.

Front 44

What is the result of injury to the MEDIAN NERVE?

Back 44

Loss of pronation of forearm & flexion of wrist and digist

Front 45

What results from injury to the ULNAR NERVE?

Back 45

Impaired flexion of wrist
Impaired movement of thumb, ring and little fingers

Front 46

What results from injury to the MUSCULOCUTANEOUS NERVE?

Back 46

Paralysis of the flexors of the forearm -- weakness in flexion and supination of forearm.
Loss of sensation on lateral side of forearm.

Front 47

What is the result of Injury to RADIAL NERVE?

Back 47

Proximal to origin of TRICEPS:
Paralysis of TRICEPS, BRACHIORADIALIS, Supinator and Extensors of wrist and digits

In RADIAL GROOVE:
Wrist drop -- inability to extend wrist and digits

Front 48

What deliminates the CUBITAL FOSSA

Back 48

Superior: line between two EPICONDYLES
Medial: PRONATOR TERES
Lateral: BRACHIORADIALIS
Floor: BRACHIALIS and SUPINATOR
Roof: Deep Fascia & Bicipital aponeurosis

Front 49

What is contained in the CUBITAL FOSSA?

Back 49

Biceps tendon
BRACHIAL ARTERY
MEDIAN NERVE
BRACHIAL VEIN
Branches of RADIAL NERVE