L9 Flashcards
What is the origin of the subclavian artery?
- RHS Brachiocephalic artery
- LHS origin arch of the aorta
What is the course of the subclavian artery?
→ (P) to sternoclavicular joint → (P) to scalenus anterior muscle → over lung apex on suprapleural membrane → over 1st rib → Axillary artery
What are the three parts of the subclavian artery?
- Medial
- Behind
- Lateral in relation to scalenus anterior
What are the branches of the subclavian artery?
- Vertebral
- Internal thoracic
- Thyrocervical trunk in the root of the neck (M) to Scalenus anterior.
- Costo-cervical trunk
Where do the highest intercostal and deep cervical arteries arise
from?
From behind scalenus anterior
What is the origin of the axillary artery?
From subclavian artery at outer border of 1st rib
What is the end of the axillary artery?
Lower border of teres major - brachial artery
What are the three parts of the axillary artery?
- Pectoralis minor 1st: (S) thoracic artery
- 2nd: Thoracoacromial & (L) thoracic artery
- 3rd: (A) & (P) circumflex humeral and subscapular artery
Scapular anastomosis of the axillary artery
1st part of subclavian artery to brs. 3rd part of axillary artery
What is the origin of the brachial artery?
From axillary artery at lower border of teres major
What are the branches of the brachial artery?
- Profunda brachii artery
- Superior / inferior ulna
- Collaterals nutrient artery of humerus muscular and articularc branches
What is the course of the brachial artery?
Lower border of teres major - ventral surface of the arm - the cubital fossa. Then divides into its terminal branches: the radial and ulnar arteries of the forearm.
What is the origin of radial artery?
Terminal branch of brachial artery at apex of cubital fossa
What is the course of radial artery?
Anterior forearm → deep to brachioradialis close to radial forearm muscles → lower forearm on anterior radius → (L) aspect of wrist → floor of anatomical snuffbox → 1st web space → 2 heads of 1ST dorsal interosseous → 2 heads adductor policis
Where is the radial artery palpated?
At lower forearm on anterior radius
Where does the radial artery end?
At the deep palmar arch artery
What are the branches of the radial artery?
- Radial recurrent artery.
- Palmar carpal branch.
- Dorsal carpal branch.
- Muscular branches.
- Superficial palmar branch.
What is the origin of the ulna artery?
Terminal branch of the brachial artery in cubital fossa along with radial A3
What is the course of the ulna artery?
Deep to CFO muscles → then deep to flexor carpi ulnaris with ulnar nerve on medial side → anterior forearm → lying on FDP → crosses anterior to wrist between flexor digitorum profundus and flexor carpi ulnaris tendons → lateral side of pisiform
What does the ulnar artery end as?
As superficial palmar arch artery