ANAT331 ACTUAL EXAM ACTUAL COMPLETE REAL EXAM QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED ANSWERS) |ALREADY GRADED A+(2026)

ANAT331 ACTUAL EXAM ACTUAL COMPLETE REAL
EXAM QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES (VERIFIED
ANSWERS) |ALREADY GRADED A+(2026)




Anatomical snuff box=


The radial fossa:
Floor= scaphoid and trapezium
(carpals) Roof= skin
It is between the tendons of EPL and
EPB. Deep= Radial artery
Superficial= contains cutaneous branches of radial nerve and cephalic
vein




What is the brachial plexus?


A network of nerves formed in the neck--> enter the axilla and surround
the axillary artery

,Major peripheral nerves of upper limb:


Musculocutaneous- biceps brachii, brachialis,
coracobrachialis Axillary-Teres minor and deltoid
Median-forearm flexors
Radial-triceps brachii and
extensors Ulnar-muscles of
hand

cutaneous nerves of upper limb


Arm= Radial and lateral cutaneous
Forearm=medial and lateral
cutaneous Hand= Radial, Median
and Ulnar

Order of sections of brachial plexus


Roots->Trunks->Divisions->Cords->terminal branches




Ventral vs Dorsal


Ventral= Anterior +
motor Dorsal= posterior
+ sensory

,Branches that come off the roots




Dorsoscapular
Long thoracic nerve
C5 branch to phrenic nerve
Subclavius




branch off the trunk


Suprascapula


Branches from lateral cord


Median (lateral
head)
Musculocutaneous
Lateral pectoral

, branches from median cord


Median (medial
head) Ulnar
Medial pectoral
medial brachial cutaneous
medial anterobrachial cutaneous




branches from posterior cord


Radial
Axillary
superior/upper subscapular
inferior/lower subscapula
Thoracodorsal




Axillary nerve


Winds around surgical neck of
humerus. Supplies deltoid and
Teres minor.
-->Becomes upper lateral cutaneous nerve