Chapter 23 Blood Vessels

Question 1

The walls of arteries and veins most inner layer composed of an endothelium layer [simple squamous epithelium] and a subendothelial layer or areolar connective tissue

Answer 1

Tunica Intima

Question 2

The walls of arteries and veins containing circularly arranged smooth muscle that can cause vasoconstriction [sympathetic] or vasodilation [parasympathetic] also the middle layer

Answer 2

Tunica Media

Question 3

The walls of arteries and veins connective tissue that aids in anchoring blood vessels, also known as the outer layer

Answer 3

Tunica Externa

Question 4

To accommodate a blood supply to large blood vessels, small arteries are found in the tunica externa called

Answer 4

Vasa Vasorum

Question 5

The Three types of arteries

Answer 5

Elastic
Muscular
Arterioles

Question 6

Largest arteries, contain elastic fibers in all three tunics, branch into muscular arteries

Answer 6

Elastic

Question 7

Medium size, possess two concentric rings of elastic fibers; inner ring is the internal elastic lamina which separates the tunica intima from the tunica media, outer ring is the external elastic lamina which separates the tunica media from the tunica externa

Answer 7

Muscular

Question 8

Smallest, contain smooth muscle in their tunica media which when contracted [sympathetic] leads to an increase in blood pressure and when relaxed [parasympathetic] leads to a drop in blood pressure

Answer 8

Arterioles

Question 9

The three types of capillaries

Answer 9

Continuous
Fenestrated
Sinusoid

Question 10

This Capillary is the most common, complete lining

Answer 10

Continuous

Question 11

This Capillary contains pores that allow for fluid exchange

Answer 11

Fenestrated

Question 12

This Capillary contain large gaps and an incomplete basement membrane. Can transport large molecules and cells to and from the blood

Answer 12

Sinusoid