bb ch 40, 41, 43 - quiz 2 Flashcards
What is the main artery for the body?
Aorta
What does the aorta turn into?
Ascending aorta then arches posterior and left to create aortic arch
What are the branches of the aortic arch? Include subdivisions
Left common carotid a.
Left subclavian a.
Brachiocephalic trunk
-right common carotid a.
-right subclavian a.
What area do the subclavian arteries supply?
The upper limbs
What area do the common carotid arteries supply?
Head and neck
What happens to the aortic arch after it gives off branches?
It ends as the descending aorta in the thorax and abdomen
Where do the right and left subclavian arteries branch off of? Where do they course?
Right - Brachiocephalic trunk
Left - aortic arch
Through the throax/neck to upper limb
What are the branches of the subclavian artery?
Vertebral a.
Internal mammary (thoracic) a.
Thyrocervical a.
Costocervical a.
What does the subclavian artery turn into and specifically where?
The axillary a.
Lateral border of first rib
Where does the axillary a. start and then course?
Lateral border of first rib
Through axilla
How many parts is the axillary a. divided into and by what?
3
Pec minor
Answer the following about the FIRST part of the axillary a.
Where does the part begin and end?
How many branches? Name them.
What do they supply?
Between the lateral border of the first rib and superomedial border of pec minor
1 - highest (supreme) thoracic a.
First 2 intercostal spaces
Answer the following about the SECOND part of the axillary a.
Where does the part begin and end?
How many branches? Name them.
What do they supply?
Posterior to pec minor
2
thoracoacromial trunk - above pec minor, has four branches:
-pectoral / supplies pec major and minor
- clavicular / supplies subclavius and sternoclav. jt.
-acromial / acromion process
-deltoid / deltoid and pec major
lateral thoracic a. - along inferolateral border of pec minor to lateral thoracic wall with long thoracic nerve, supplies lateral thoracic wall, breast
Answer the following about the THIRD part of the axillary a.
Where does the part begin and end?
How many branches? Name them.
What do they supply?
Between inferolateral border of pec minor and inferior border of teres major
3
Subscapular artery - 2 branches:
-thoracodorsal a. / supplies lat. dorsi with thoracodorsal n.
-circumflex scapular artery / posterior thru triangle space of shoulder, around lateral border of scalp, into infraspinous fossa deep to infraspinatus muscle
Anterior circumflex a. - anterior around surgical neck of humerus, supplies adjacent muscles, and ends by anastomosing with posterior circumflex humeral a.
Posterior circumflex humeral a. - posterior thru quad space of shoulder with axillary n., posterior around humeral surgical neck deep to deltoid and supplies surrounding muscles
Be able to draw the brachial plexus. What are the subcategories from left to right?
Root
Trunk
Division
Cord
Branch of nerve
Where does the nerve of the brachial plexus originate, course, and supply?
DORSAL SCAPULAR N.
C5
Deep to levator scapula and deep surface of rhomboids
Supplies rhomboid major and minor
Where does the nerve of the brachial plexus originate, course, and supply?
LONG THORACIC N.
From C5-7
Posterior to axillary a. and on external surface of serratus anterior
Supplies serratus anterior
Where does the nerve of the brachial plexus originate, course, and supply?
NERVE TO SUBCLAVIUS
From upper trunk
Descends posteriorly to clavicle, ending at subclavius muscle
Supplies subclavius
Where does the nerve of the brachial plexus originate, course, and supply?
SUPRASCAPULAR N.
From upper trunk
Lateral and posterior thru suprascapular notch and into supraspinous fossa, SUPPLIES supraspinatus, around spine of scapula and into infraspinous fossa, SUPPLIES infraspinatus
Where does the nerve of the brachial plexus originate, course, and supply?
LATERAL PECTORAL N.
From lateral cord
Through fascia above pec minor into deep surface of pec major
Supplies pec major