Question 1

What prevents blood from clotting?&#10;A) platelets&#10;B) heparin&#10;C) fibrin&#10;D) fibrinogen

Accepted Answer

Heparin is a naturally occurring anticoagulant that prevents blood from clotting by inhibiting clotting factors. Platelets, fibrin, and fibrinogen are all involved in the clotting process.

Question 2

An individual whose blood type is AB negative can ________.&#10;A) receive A, B, and AB, but not O&#10;B) donate to all blood types&#10;C) donate to Types A, B, AB, but not to Type O&#10;D) receive any blood type except that with an Rh antigen

Accepted Answer

D

Question 3

What white blood cells are most abundant in lymphoid tissue?&#10;A) neutrophils&#10;B) monocytes&#10;C) lymphocytes&#10;D) eosinophils

Accepted Answer

Lymphoid tissue is primarily composed of lymphocytes, which are responsible for immune surveillance and defense against pathogens. Neutrophils and monocytes are more commonly found in other tissues, while eosinophils are more commonly associated with allergic responses and parasitic infections.

Question 4

92% of blood plasma is made up of ________.&#10;A) formed elements&#10;B) water&#10;C) protein&#10;D) none of the above

Accepted Answer

Blood plasma is the liquid component of blood and is mostly made up of water (92%). The other components of blood plasma include proteins, electrolytes, hormones, and waste products. Formed elements such as red blood cells, white blood cells, and platelets are not part of blood plasma, but are found in the cellular component of blood.

Question 5

Platelets ________.&#10;A) are the precursors to leukocytes&#10;B) have multiple nuclei&#10;C) stick to damaged areas of blood vessels and help seal the break&#10;D) none of the above

Accepted Answer

Platelets are responsible for clotting and help to stick to damaged blood vessels to promote clotting and stop bleeding. They are not precursors to leukocytes and do not have multiple nuclei.

Question 6

When neither anti-A sera nor anti-B sera clot on a blood plate with donor blood, the blood is Type ________.&#10;A) AB&#10;B) B&#10;C) A&#10;D) O

Accepted Answer

When neither anti-A nor anti-B sera clots on a blood plate with donor blood, it means that the donor blood does not contain A or B antigens on its surface. This type of blood is known as Type O.

Question 7

Tom's blood type is AB positive. What does this mean?&#10;A) He can only receive blood from a donor who is AB positive.&#10;B) There are no antibodies to A, to B, or to Rh antigens in the plasma.&#10;C) His blood lacks the Rh factor.&#10;D) Antibodies to A and B are present in the plasma.

Accepted Answer

AB positive blood type is a rare blood group that has both A and B markers on red blood cells, and also Rh factor. People with AB positive blood type can receive blood from donors with A, B, AB, or O blood types, and are known as universal recipients. This is because they do not have antibodies to A, to B, or to Rh antigens in the plasma.

Question 8

Which white blood cells are first to arrive at the site of a wound?&#10;A) basophils&#10;B) monocytes&#10;C) neutrophils&#10;D) eosinophils

Accepted Answer

Neutrophils are the first type of white blood cell to arrive at the site of a wound. They are attracted by signals released by damaged tissues and begin to engulf and destroy foreign particles and bacteria. Basophils and eosinophils are involved in allergic reactions, while monocytes develop into macrophages, which also play a role in the immune response but typically arrive at the wound site after neutrophils.

Question 9

When viewing a blood smear under a microscope, the cells with the visible nuclei are ________.&#10;A) leukocytes&#10;B) platelets&#10;C) erythrocytes&#10;D) none of the above

Accepted Answer

Leukocytes, also known as white blood cells, are the only type of blood cell with a visible nucleus when viewed under a microscope. Platelets and erythrocytes do not have a visible nucleus.

Question 10

Which of the following is characteristic of all leukocytes?&#10;A) They have cytoplasmic granules.&#10;B) They are phagocytic.&#10;C) They are nucleated.&#10;D) They are the most numerous elements formed in blood.

Accepted Answer

All leukocytes (white blood cells) are nucleated, meaning they have a distinct nucleus within their cell structure. This distinguishes them from erythrocytes (red blood cells), which lose their nucleus during development and are anucleated when they are released into circulation.

Question 11

Visible cytoplasmic granules are NOT present in ________.&#10;A) eosinophils&#10;B) neutrophils&#10;C) monocytes&#10;D) basophils

Accepted Answer

The answer of Visible cytoplasmic granules are NOT present in...

Question 12

A hematocrit primarily measures the volume of ________.&#10;A) platelets&#10;B) red blood cells&#10;C) white blood cells&#10;D) oxygen

Accepted Answer

The answer of A hematocrit primarily measures the volume of...

Question 13

Which blood type is called the universal donor?&#10;A) B&#10;B) Type AB&#10;C) Type O&#10;D) Type A

Accepted Answer

The answer of Which blood type is called the universal...

Question 14

Which type of blood is considered to be the universal recipient?&#10;A) Type B&#10;B) Type A&#10;C) Type O&#10;D) Type AB

Accepted Answer

The answer of Which type of blood is considered to...

Deck 34: Blood