WorksheetsVascular System
Total questions: 25
Worksheet time: 25mins
Name
Class
Date
1.
The vessels that carry blood away from the heart are:
a)
Capillaries
b)
Sinusoids
c)
Veins
d)
Arteries
2.
The innermost layer of blood vessels is composed of what type of material?
a)
Simple squamous epithelium
b)
Smooth Muscle
c)
Cardiac Muscle
d)
Connective Tissue
3.
Veins are called capacitance vessels because they have the capacity to:
a)
pulsate with the heart’s contractions.
b)
stretch, giving them a great capacity for storing blood.
c)
dilate and constrict to regulate blood pressure.
d)
direct blood flow to organs and tissues in need.
4.
What is the purpose of the valves in veins?
a)
Keep oxygenated blood from mixing with unoxygenated blood
b)
Prevent the backflow of blood
c)
Aid in the redirection of blood flow
d)
Aid in the pumping of blood
5.
What are the exchange vessels of the circulatory system, where nutrients, wastes, and hormones are transferred between blood and tissues?
a)
veins
b)
Arterioles
c)
Capillaries
d)
Venuoles
6.
The most important mechanism for capillary exchange is:
a)
Filtration
b)
Colloid Osmotic Pressure
c)
Gravity
d)
Diffusion
7.
All systemic arteries arise, directly or indirectly, from the:
a)
Aorta
b)
Inferior Vena Cava
c)
Sublcavian Artery
d)
Carotid Artery
8.
The reason blood constantly circulates is because of:
a)
The beating of the heart
b)
Low Viscosity
c)
Pressure Gradients
d)
Vasoconstriction and Vasodilation
9.
A bulge in an arterial wall that results when a portion of the arterial wall weakens is a:
a)
Aneurysm
b)
Anastamosis
c)
Arteriole
d)
Hematoma
10.
The process by which the contraction of skeletal muscles aid in venous return:
a)
Pressure gradient
b)
Respiratory pump
c)
Skeletal muscle pump
d)
Circulatory pump
11.
The middle layer of blood vessels; composed of smooth muscle and elastic tissue:
a)
Tunica externa
b)
Tunica media
c)
Tunica intima<br />
d)
Lumen
12.
A large, permeable capillary found in organs such as the liver, spleen, and bone marrow that allows for the passage of large cells and proteins:
a)
Arteriole
b)
Venuole
c)
Aneurysm
d)
Sinusoid
13.
Baroreceptors are:
a)
Sensory nerve endings in the aortic arch and carotid arteries that sense changes in pressure
b)
Short vessels that connect arterioles to capillaries
c)
The portion of blood vessels that adjust their diameter
d)
Arterioles which help regulate blood pressure and control how much blood enters an organ
14.
Which blood vessels have the greatest ability to expand and recoil, and why is this important?
a)
Medium-sized veins, because it helps them carry varying amounts of blood
b)
Conducting arteries, so they can manage the surge of blood with systole and help propel blood during diastole
c)
Arterioles, because they must constrict or dilate to control blood pressure
d)
Capillaries, because they must supply more blood during stress or exercise
15.
Why is it important for the tunica intima to be smooth?
a)
To make stretching easier
b)
To increase recoil power
c)
To help prevent aneurysms
d)
To help prevent blood clots
16.
Which is the correct order of vessels in the arterial system, starting at the heart?
a)
Elastic arteries, distributing arteries, resistance vessels, arterioles
b)
Conducting arteries, muscular arteries, elastic arteries, arterioles
c)
Distributing arteries, conducting arteries, elastic arteries, arterioles
d)
Conducting arteries, distributing arteries, arterioles, capillaries
17.
Which is the correct order of vessels in the venous system, beginning with capillaries?
a)
Large veins, medium-sized veins, venules
b)
Venules, capacitance veins, muscular veins, large veins
c)
Venules, medium-sized veins, large veins
d)
Large veins, medium-sized veins, small veins, venules
18.
Which best explains how the vascular system maintains blood pressure?
a)
Arterioles dilate or constrict to provide the correct amount of resistance to blood flow.
b)
Medium-sized veins constrict to help maintain blood pressure when blood pressure drops.
c)
Distributing arteries carry blood evenly throughout the body to maintain a stable blood pressure.
d)
Veins and arteries work together to maintain blood pressure at or near 110/70 mm Hg.
19.
What is diffusion from the standpoint of capillary exchange?
a)
Movement of oxygen and carbon dioxide from an area of higher concentration to an area of lower concentration
b)
Water moves through the capillary wall from an area of lower concentration to an area of higher concentration
c)
Higher pressure within the capillary pushes plasma and dissolved nutrients through the capillary wall
d)
Albumin and other proteins in blood pull tissue fluid and cellular waste products into the cell
20.
Which arteries provide most of the brain’s blood supply?
a)
Juglular Arteries
b)
Subclavian Artery
c)
Internal Carotid Artery
d)
Vertebral Arteries
21.
What effect does reducing peripheral resistance have?
a)
It decreases blood flow and increases blood pressure.
b)
It increases cardiac output.
c)
It increases blood flow and decreases blood pressure.
d)
It decreases cardiac output and increases blood pressure.
22.
The maximum pressure generated during ventricular contraction is called
a)
diastolic pressure.
b)
systolic pressure
c)
stroke volume pressure
d)
arteriole pressire
23.
Where in the cardiovascular system are the highest and the lowest pressures found?
a)
Left ventricle (highest); right atrium (lowest)
b)
Aorta (highest), capillaries (lowest)
c)
Large arteries (highest), small veins (lowest)
d)
Aorta (highest), venae cava (lowest)
24.
Which is the most significant factor affecting peripheral resistance?
a)
Blood viscosity
b)
Blood vessel length
c)
Blood vessel diameter
d)
Blood pH
25.
How does vasodilation decrease blood pressure?
a)
It increases cardiac output, which means less pressure is required to maintain blood flow to tissues.
b)
It increases venous return, which decreases the amount of pressure needed to return blood to the heart.
c)
It slows blood velocity; less velocity requires less pressure.
d)
It decreases resistance, which means less pressure is required to overcome the resistance.
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