Veins

Question 1

What are deep veins?

Answer 1

• Are veins that run with the same-named arteries.
• They are bound with their arteries by a thin collagen sheath.

Question 2

What are superficial veins?

Answer 2

Are veins that run by themselves in the superficial fascia.

Question 3

How else can deep veins be known?

Answer 3

Venae comitantes.

Question 4

Why are they called deep veins?

Answer 4

• They run beneath the deep fascia.
• The sleeve of collagenous tissue that wraps around all muscles.

Question 5

Name the 3 superficial veins.

Answer 5

• Dorsal venous arch,
• Great saphenous vein.
• Small saphenous vein.

Question 6

What are the methods of venous return?

Answer 6

• Muscle pumps.
• Valves.

Question 7

Describe muscle pumps as a mechanism of venous return.

Answer 7

• When muscles contract they will bulge out + compress.
• This causes veins that run in between them to be emptied out.
• When muscles relax the veins will refill.

Question 8

Describe valves as a mechanism of venous return.

Answer 8

• Valves will prevent the backflow of blood within veins.
• They open to let blood through to the direction of the heart.
• The slightly higher blood pressure will close the valves when due to gravity blood attempts to flow backwards.