Peripheral Vasculature Flashcards
(54 cards)
What are the three different types of blood vessels in the body?
- Arteries
- Veins
- Capillaries
What are the Arteries?
- Strong and flexible
- Blood flows from arteries to arterials
- High pressure system
What are veins?
- Less elastic than arteries
- Blood flow from venues to veins
- Low pressure system
What are the capillaries?
- Links between arteries and veins
- Webs of microscopic vessels
- Main exchange between blood and tissue fluid, gases, waste
What are the three layers of vessel walls?
- Tunica Intima (inner)
- Tunica media (middle)
- Tunica Adventitia (outer)
What are the differences with between the arteries and veins?
- Tunica media: the arteries are thicker and holds shape of vessel while the vein has a thinner tunica which allows for compressibility
- Valves: The arteries have none and flow controlled by systole and muscle contractions. Meanwhile, the veins have valves and a one at flow towards hearts, and are located in the upper and lower extremities
- Veins are deep and superficial
Blood supply to the arms comes from branches of the aortic arch. What are they?
- Brachiocephalic or innominate
- Left common carotid artery
- Left subclavian
What is the Brachiocephalic or innominate?
- 1st branch on the Aortic arch
- Anterior position relative to other vessels
What is the left common carotid artery?
- 2nd branch of Aortic arch
- Middle and posterior to innominate artery
What is the left subclavian?
- 3rd branch off aortic arch
- Most posterior branch on arch
In the right arm the Brachiocephalic trunk does what?
Divides into two branches
- Right CCA
- Right subclavian artery
The subclavian arteries travel towards what?
Shoulder and become a axillary arteries at the level of the numeral head
What is the axillary artery?
- Extension of the subclavian artery
- Originates at numeral head
- A short segment that travels along the axillary
What is the brachial artery?
- Located at upper/ mid humerus axillary becomes brachial
- Continues to elbow
- Divides into ulnar and radial arteries
What is the radial arteries?
- Travels along lateral forearm to wrist
- Thumb side
What is the ulnar artery ?
Travels along medial forearm to writs
What are the palmar arteries?
- Distal extensions of radial and ulnar arteries
- Form deep and superficial arches in hand
What are the digital arteries?
Arteries to fingers
What are the digital and palmer veins?
- Returns blood from fingers and hands
- Palmar arches (superficial and deep)
What are the radial veins?
Ascend along lateral aspect of forearm
What is the ulnar vein?
Ascends along medial aspect of arm
The radial and ulnar veins unite where ?
Inferior to elbow to form brachial veins
What are the brachial veins?
- Often paired
- Travel superior to join Basilic vein
- Union of basilic and brachial veins form axillary vein
What is the axillary vein?
- Travel up medial aspect of arm
- Passes behind clavicle to become subclavian vein