1
Wk3
Blood vessel Lab report
1. Describe the different types of blood vessels by completing the following chart: (3
points total; 1/4 point per box)
Blood vessel Histological description/special
characteristics
move blood from the heart during
Thick and full of elastic fibers
ventricular diastole.
enabling the walls to stretch due
elastic fibers store mechanical
Large to increase blood pressure
energy, which is converted into
arteries
kinetic energy as the elastic fibers
recoil and force the blood away
from the heart.
well-defined internal but thin
external elastic laminae Recoil of walls does not move the
Medium blood.
arteries made up of 3-40 concentrically Smooth muscles cell maintains a
arranged layers of smooth muscle partial contraction
cells
thin, with a fenestrated (porous)
internal elastic lamina that
diminishes as the arteriole tapers
towards its terminal end and regulate rate of blood flow, blood
Arterioles
continues as a capillary, pressure, and vascular resistance
concentrically arranged layers of
smooth muscle cells
approximately 0.2 micrometers
(0.02 mm) thick and is composed
Exchange can occurs to cells
Capillaries of a single layer of endothelial
further away from blood vessels
cells adhered to a basement
membrane.
not able to withstand high
pressure
Medium
somewhat on contraction of Contains valves to stop back flow
veins
surrounding skeletal muscle and
the pumping action of the heart to
boost blood return
Wk3
Blood vessel Lab report
1. Describe the different types of blood vessels by completing the following chart: (3
points total; 1/4 point per box)
Blood vessel Histological description/special
characteristics
move blood from the heart during
Thick and full of elastic fibers
ventricular diastole.
enabling the walls to stretch due
elastic fibers store mechanical
Large to increase blood pressure
energy, which is converted into
arteries
kinetic energy as the elastic fibers
recoil and force the blood away
from the heart.
well-defined internal but thin
external elastic laminae Recoil of walls does not move the
Medium blood.
arteries made up of 3-40 concentrically Smooth muscles cell maintains a
arranged layers of smooth muscle partial contraction
cells
thin, with a fenestrated (porous)
internal elastic lamina that
diminishes as the arteriole tapers
towards its terminal end and regulate rate of blood flow, blood
Arterioles
continues as a capillary, pressure, and vascular resistance
concentrically arranged layers of
smooth muscle cells
approximately 0.2 micrometers
(0.02 mm) thick and is composed
Exchange can occurs to cells
Capillaries of a single layer of endothelial
further away from blood vessels
cells adhered to a basement
membrane.
not able to withstand high
pressure
Medium
somewhat on contraction of Contains valves to stop back flow
veins
surrounding skeletal muscle and
the pumping action of the heart to
boost blood return
