The Body (Nerves & Muscles) Flashcards
(31 cards)
Innervation of the Thenar Muscle (thumb)
Median Nerve
What is a Thenar?
are group of muscles on the palm & at base of the thumb
What innervates the anterior wrist?
Median nerve
What part of the arm is most susceptible to ulnar nerve injury?
Elbow
Which muscle in the arm is innervated by the radial nerve (supplies upper limbs)
triceps
What brachial nerve & musvle is for circumduction of the arm?
Auxiliary (b/c of deltoids)
Suspination of radio-ulnar joint?
biceps brachii
what muscle adducts the scapula?
rhomboids (minor best answer)
what muscle adducts?
trapezious & rhomboids (major, minor)
what muscles abducts?
serratus anterior, pectoralis
which one does not contributed to the posterior wall of the axilla?
Serratus anterior, Humerus
What is the posterior wall?
subscapularis, teres major, latissiumus dorsi, & scapula
Innervation that causes rotation of the arm
C5 (doc says C5-C6)
If a person can’t flex their wrist, what nerves are invovled?
C6-C7 (Ulnar n., Flexor Carpi Ulnaris m)
What innervates the Brachialis (biceps muscles)?
Musculocutaneous (C5-C7)
What is the most distal portion of the brachial plexus?
Branches (Musculocutaneous, Auxillary, median, radial, ulnar nerve)
Auxillar sheath surrounds the auxillary vein, auxillary artery & 3 cords of the branchial plexus
No trunks/roots of brachial plexus
Where do the 4th, 5th, and 6th intercostal veins drain?
Accessory Hemizygous (formed by the 4th-8th intercostal veins)
Right superior intercostal muscles drain into the right side of the what?
azygous vein
Azygous vein leaves an impression on the what?
right lung
What supplies the SA node?
Right Coronary Artery
Where is atherosclerosis most common?
Abdominal Aorta
What exits the thorax at T12
descending Aorta
Toracic duct is behind what?
Esophagus & Aorta
