Blood Vessels Lab

Question 1

Is the circulatory system an open system or a closed system?

Answer 1

Closed system

Question 2

All blood vessels are composed of 3 layers of tissues except for:

Answer 2

Capillaries

Question 3

3 Layers Tissues are:

Answer 3

• Tunica interna
• Tunica media
• Tunica externa

Question 4

Inner layer that lines the lumen of a blood vessel; it is one cell thick of endothelium; simple squamous underlain with basal lamina, (may also have extra layer of elastic connective tissue in arteries)

Answer 4

Tunica Interna

Question 5

Middle layer, which is composed of smooth muscle and elastin fibers

Answer 5

Tunica Media

Question 6

Outermost layer, composed of areolar and fibrous connective tissue. Its main function is for support or protection

Answer 6

Tunica Externa

Question 7

Higher pressure, lumen are smaller, thickest tunica media; Usually deep (next to bone): usually named after bone, region, or organ:

Answer 7

Arteries

Question 8

Lower pressure, largest lumen, tunica media thinner

Answer 8

Veins

Question 9

Low pressure; smallest lumen; no smooth muscle; wall only one cell thick (endothelium and basement membrane)

Answer 9

Capillaries

Question 10

Is a communication between two vessels; It offers more than one route for blood to reach an organ or drain a region

Answer 10

Anastomosis

Question 11

Umbilical Arteries turn into the:

Answer 11

Medial Umbilical Ligaments

Question 12

The Umbilical Vein turns into the:

Answer 12

Ligamentum Teres

Question 13

The Ductus Venosus turns into the:

Answer 13

Ligamentum Venosum

Question 14

The Ductus Arteriosus turns into the:

Answer 14

Ligamentum Arteriosum

Question 15

The Foramen Ovale turns into the:

Answer 15

Fossa Ovalis