Question 1

The functions of platelets include all of the following except

Accepted Answer

A)  secretion of chemicals that call more platelets to the site of injury. 
B)  formation of a temporary patch in the walls of damaged blood vessels. 
C)  release of chemical signals that trigger the immune response. 
D)  release of molecules that initiate clotting. 
A)  secretion of chemicals that call more platelets to the site of injury. 
B)  formation of a temporary patch in the walls of damaged blood vessels. 
C)  release of chemical signals that trigger the immune response. 
D)  release of molecules that initiate clotting.

Question 2

Describe the difference between myeloblastic and lymphoblastic leukemias, and identify the types of cells that might be abnormal in each disease.

Accepted Answer

Myeloblastic leukemia is an abnormal pro

Question 3

In adults, blood cells are manufactured in the marrow of all of the following bones except the

Accepted Answer

A)  pelvis. 
B)  forearm bones (radius and ulna). 
C)  clavicle. 
D)  sternum. 
A)  pelvis. 
B)  forearm bones (radius and ulna). 
C)  clavicle. 
D)  sternum.

Question 4

The blood protein that contributes osmotic pressure, keeping water from leaking out of the vessels, is called the

Accepted Answer

A)  hematocrit. 
B)  buffy coat. 
C)  serum. 
D)  albumin. 
E)  myeloid. 
A)  hematocrit. 
B)  buffy coat. 
C)  serum. 
D)  albumin. 
E)  myeloid.

Question 5

The absence of a nucleus, mitochondria, and ribosomes is a telltale characteristic of ________.

Accepted Answer

The answer of The absence of a nucleus, mitochondria, and...

Question 6

The ________ is the fraction of blood made up of leukocytes.

Accepted Answer

The answer of The ________ is the fraction of blood...

Question 7

An eosinophil can be distinguished from a basophil because the eosinophil

Accepted Answer

A)  has a lobed (versus nonlobed) nucleus. 
B)  contains cytoplasmic granules. 
C)  has pink (versus dark purple) granules. 
D)  is smaller. 
A)  has a lobed (versus nonlobed) nucleus. 
B)  contains cytoplasmic granules. 
C)  has pink (versus dark purple) granules. 
D)  is smaller.

Question 8

Leukocytes, ordered from most to least abundant, are the

Accepted Answer

A)  basophils, eosinophils, lymphocytes, monocytes, and neutrophils. 
B)  basophils, eosinophils, monocytes, lymphocytes, and neutrophils. 
C)  neutrophils, lymphocytes, monocytes, eosinophils, and basophils. 
D)  neutrophils, monocytes, eosinophils, basophils, and lymphocytes. 
A)  basophils, eosinophils, lymphocytes, monocytes, and neutrophils. 
B)  basophils, eosinophils, monocytes, lymphocytes, and neutrophils. 
C)  neutrophils, lymphocytes, monocytes, eosinophils, and basophils. 
D)  neutrophils, monocytes, eosinophils, basophils, and lymphocytes.

Question 9

Hematocrit is the percentage of blood consisting of erythrocytes.

Accepted Answer

A) True 
 B)False

Question 10

Describe how the structure of erythrocytes is advantageous for their function as oxygen transporters.

Accepted Answer

Erythrocytes consist of hemoglobin molec

Question 11

When centrifuged, blood separates into the following sequence of layers, from lightest to heaviest

Accepted Answer

A)  buffy coat, hematocrit, plasma. 
B)  buffy coat, plasma, hematocrit. 
C)  hematocrit, plasma, buffy coat. 
D)  plasma, buffy coat, hematocrit. 
A)  buffy coat, hematocrit, plasma. 
B)  buffy coat, plasma, hematocrit. 
C)  hematocrit, plasma, buffy coat. 
D)  plasma, buffy coat, hematocrit.

Question 12

Elevated numbers of band cells in differential WBC counts is considered an indicator of infection.

Accepted Answer

A) True 
 B)False

Question 13

Oxygen levels are lower at higher altitudes. Why would you expect to see increased numbers of reticulocytes in the blood at high altitudes?

Accepted Answer

A)  Erythrocyte production is being stimulated to increase the oxygen-carrying capacity of the blood. 
B)  More reticulocytes would increase the capacity of blood to fight infections, which are common at high altitude. 
C)  Monocyte production is being stimulated in order to deal with the low oxygen levels. 
D)  Reticulocytes become megakaryocytes, which produce more platelets for clotting at high altitudes. 
A)  Erythrocyte production is being stimulated to increase the oxygen-carrying capacity of the blood. 
B)  More reticulocytes would increase the capacity of blood to fight infections, which are common at high altitude. 
C)  Monocyte production is being stimulated in order to deal with the low oxygen levels. 
D)  Reticulocytes become megakaryocytes, which produce more platelets for clotting at high altitudes.

Question 14

Leukocytes function primarily within the bloodstream.

Accepted Answer

A) True 
 B)False

Question 15

Mast cells and basophils both release histamine at the site of inflammation.

Accepted Answer

A) True 
 B)False

Question 16

B lymphocytes attach to non-self cells and cause them to lyse.

Accepted Answer

A) True 
 B)False

Question 17

In polycythemia, there is an abnormal excess of erythrocytes in the blood. What could be a consequence of having two many red blood cells in the blood?

Accepted Answer

A)  The blood is more viscous, and the red blood cells could block flow through small vessels. 
B)  Less oxygen could be carried in the blood. 
C)  The body would be better able to fight infection. 
D)  The blood would be come thinner, increasing the risk for excessive bleeding. 
A)  The blood is more viscous, and the red blood cells could block flow through small vessels. 
B)  Less oxygen could be carried in the blood. 
C)  The body would be better able to fight infection. 
D)  The blood would be come thinner, increasing the risk for excessive bleeding.

Question 18

Yellow bone marrow gets its color from

Accepted Answer

A)  the bone trabeculae in the center of this colorless marrow. 
B)  the early stages of red blood cells being made there. 
C)  low densities of red blood cells. 
D)  fat cells. 
A)  the bone trabeculae in the center of this colorless marrow. 
B)  the early stages of red blood cells being made there. 
C)  low densities of red blood cells. 
D)  fat cells.

Question 19

The least abundant type of leukocyte is the monocyte.

Accepted Answer

A) True 
 B)False

Question 20

The most abundant type of leukocyte is the neutrophil.

Accepted Answer

A) True 
 B)False

Exam 18: Blood

The functions of platelets include all of the following except

Describe the difference between myeloblastic and lymphoblastic leukemias, and identify the types of cells that might be abnormal in each disease.

In adults, blood cells are manufactured in the marrow of all of the following bones except the

The blood protein that contributes osmotic pressure, keeping water from leaking out of the vessels, is called the

The absence of a nucleus, mitochondria, and ribosomes is a telltale characteristic of ________.

The ________ is the fraction of blood made up of leukocytes.

An eosinophil can be distinguished from a basophil because the eosinophil

Leukocytes, ordered from most to least abundant, are the

Hematocrit is the percentage of blood consisting of erythrocytes.

Describe how the structure of erythrocytes is advantageous for their function as oxygen transporters.

When centrifuged, blood separates into the following sequence of layers, from lightest to heaviest

Elevated numbers of band cells in differential WBC counts is considered an indicator of infection.

Oxygen levels are lower at higher altitudes. Why would you expect to see increased numbers of reticulocytes in the blood at high altitudes?

Leukocytes function primarily within the bloodstream.

Mast cells and basophils both release histamine at the site of inflammation.

B lymphocytes attach to non-self cells and cause them to lyse.

In polycythemia, there is an abnormal excess of erythrocytes in the blood. What could be a consequence of having two many red blood cells in the blood?

Yellow bone marrow gets its color from

The least abundant type of leukocyte is the monocyte.

The most abundant type of leukocyte is the neutrophil.

The Human Body: an Orientation

Cells: the Living Units

Basic Embryology

Tissues

The Integumentary System

Bones and Skeletal Tissues

Bones, Part 1: the Axial Skeleton

Bones, Part 2: the Appendicular Skeleton

Joints

Skeletal Muscle Tissue

Muscles of the Body

Fundamentals of the Nervous System and Nervous Tissue

The Central Nervous System

The Peripheral Nervous System

The Autonomic Nervous System and Visceral Sensory Neurons

The Special Senses

The Endocrine System

The Heart

Blood Vessels

The Lymphatic and Immune Systems

The Respiratory System

The Digestive System

The Urinary System

The Reproductive System

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