Circulatory system tables

Question 1

Elastic Arteries

1) Lumen diameter
2) Relative amount of smooth muscle
3) Elastic fibers
4) Nerve supply
5) Pericytes?
6) vasa vasorum?
7) lymphatics?
8) Function

Answer 1

1) > 1 cm
2) ++
3) ++++
4) +++ (esp. sensory)
5) no
6) +++
7) ++
8) Elastic recoil maintains flow in diastole

Question 2

Muscular Arteries

1) Lumen diameter
2) Relative amount of smooth muscle
3) Elastic fibers
4) Nerve supply
5) Pericytes?
6) vasa vasorum?
7) lymphatics?
8) Function

Answer 2

1) 0.5-1 cm
2) +++
3) ++
4) +
5) No
6) +
7) +
8) Blood distribution

Question 3

Arterioles

1) Lumen diameter
2) Relative amount of smooth muscle
3) Elastic fibers
4) Nerve supply
5) Pericytes?
6) vasa vasorum?
7) lymphatics?
8) Function

Answer 3

1) Less than 0.5 mm
2) ++++
3) +
4) +++(especially motor)
5) No
6) No
7) No
8) Blood pressure regulation

Question 4

Precapillary arterioles

1) Lumen diameter
2) Relative amount of smooth muscle
3) Elastic fibers
4) Nerve supply
5) Pericytes?
6) vasa vasorum?
7) lymphatics?
8) Function

Answer 4

1) 10-40 um
2) +
3) +/-
4) +++(esp. motor)
5) no
6) no
7) no
8) capillary sphincters

Question 5

Capillaries

1) Lumen diameter
2) Relative amount of smooth muscle
3) Elastic fibers
4) Nerve supply
5) Pericytes?
6) vasa vasorum?
7) lymphatics?
8) Function

Answer 5

1) 7-10 um
2) -
3) -
4) -
5) YES
6) no
7) no
8) Exchange oxygen, CO2, waste products

Question 6

Large Veins

1) Lumen diameter
2) Relative amount of smooth muscle
3) Elastic fibers
4) Nerve supply
5) Pericytes?
6) vasa vasorum?
7) lymphatics?
8) Function

Answer 6

1) > 1cm
2) ++ (primarily in adventitia)
3) ++
4) +++(especially in adventitia)
5) no
6) ++++
7) +++
8) Carry venous blood to the heart

Question 7

Medium veins

1) Lumen diameter
2) Relative amount of smooth muscle
3) Elastic fibers
4) Nerve supply
5) Pericytes?
6) vasa vasorum?
7) lymphatics?
8) Function

Answer 7

1) 3mm-1cm
2) +
3) +
4) ++
5) -
6) ++
7) +/-
8) Collect venous blood

Question 8

Muscular venules

1) Lumen diameter
2) Relative amount of smooth muscle
3) Elastic fibers
4) Nerve supply
5) Pericytes?
6) vasa vasorum?
7) lymphatics?
8) Function

Answer 8

1) 50um-1mm
2) +/-
3) +/-
4) +
5) -
6) +
7) -
8) transport venous blood

Question 9

Postcapillary venules

1) Lumen diameter
2) Relative amount of smooth muscle
3) Elastic fibers
4) Nerve supply
5) Pericytes?
6) vasa vasorum?
7) lymphatics?
8) Function

Answer 9

1) 12-50um
2) -
3) -
4) -
5) ++ starts out - incomplete layer and becomes more complete ++++
6) -
7) -
8) very permeable - blood tissue exchange - inflammation