Question 1

Which of these statements describes cytotoxic T cells

Accepted Answer

A) They can cause death of an infected host cell by releasing granzymes. 
B) They secrete B-cell growth factor and T-cell growth factor. 
C) They confer greater phagocytic properties on macrophages, converting them into angry macrophages. 
D) They bind with class II MHC glycoproteins. 
A) They can cause death of an infected host cell by releasing granzymes. 
B) They secrete B-cell growth factor and T-cell growth factor. 
C) They confer greater phagocytic properties on macrophages, converting them into angry macrophages. 
D) They bind with class II MHC glycoproteins.

Question 2

Which of the following is NOT accomplished by antibodies

Accepted Answer

A) neutralization of bacterial toxins 
B) enhancement of phagocytosis 
C) activation of the complement system 
D) direct destruction of foreign body cells 
A) neutralization of bacterial toxins 
B) enhancement of phagocytosis 
C) activation of the complement system 
D) direct destruction of foreign body cells

Question 3

____________________ ions switch on the contractile apparatus needed for the crawling-like motion of a leukocyte.

Accepted Answer

The answer of ____________________ ions switch on the contractile apparatus...

Question 4

Antihistamines are effective in combating the allergic symptoms induced by a slow-reactive substance of anaphylaxis.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following is NOT attributable to components of the complement system

Accepted Answer

A) forming a membrane-attack complex 
B) walling off of an inflamed area 
C) serving as chemotaxins 
D) acting as opsonins 
A) forming a membrane-attack complex 
B) walling off of an inflamed area 
C) serving as chemotaxins 
D) acting as opsonins

Question 6

Penicillin is a possible ____________________, provoking hypersensitivity.

Accepted Answer

The answer of Penicillin is a possible ____________________, provoking hypersensitivity....

Question 7

Which of these statements does NOT describe self-antigens

Accepted Answer

A) They are plasma membrane-bound glycoproteins. 
B) They are coded for by the major histocompatibility complex. 
C) They are present only on the surface of leukocytes. 
D) They have the same molecular structure in identical twins. 
A) They are plasma membrane-bound glycoproteins. 
B) They are coded for by the major histocompatibility complex. 
C) They are present only on the surface of leukocytes. 
D) They have the same molecular structure in identical twins.

Question 8

A(n) ____________________ is a walled-off structure within which indestructible offending material is imprisoned.

Accepted Answer

The answer of A(n) ____________________ is a walled-off structure within...

Question 9

Humoural immunity involves the production of ____________________ by B lymphocyte derivatives.

Accepted Answer

The answer of Humoural immunity involves the production of ____________________...

Question 10

Which cell type in the epidermis produces a pigment that absorbs ultraviolet light

Accepted Answer

A) keratinocyte 
B) melanocyte 
C) Langerhans cell 
D) Granstein cell 
A) keratinocyte 
B) melanocyte 
C) Langerhans cell 
D) Granstein cell

Question 11

Which type of cells do natural killer cells destroy

Accepted Answer

A) antibody-marked cells 
B) bacteria and virus-infected cells 
C) bacteria and cancerous cells 
D) cancerous cells and virus-infected cells 
A) antibody-marked cells 
B) bacteria and virus-infected cells 
C) bacteria and cancerous cells 
D) cancerous cells and virus-infected cells

Question 12

Which of these statements describes interferon

Accepted Answer

A) It is released from bacteria-infected cells. 
B) It triggers the production of virus-blocking enzymes by cells that have not yet been invaded by viruses. 
C) It directly breaks down viral messenger RNA and inhibits protein synthesis, both of which are essential for viral replication. 
D) Its secretion is decreased during exercise. 
A) It is released from bacteria-infected cells. 
B) It triggers the production of virus-blocking enzymes by cells that have not yet been invaded by viruses. 
C) It directly breaks down viral messenger RNA and inhibits protein synthesis, both of which are essential for viral replication. 
D) Its secretion is decreased during exercise.

Question 13

Which of these statements describes natural killer (NK) cells

Accepted Answer

A) They are large, specialized monocytes. 
B) They ingest bacteria. 
C) They nonspecifically destroy virus-infected cells. 
D) They constitute 50 to 70 percent of all monocytes in the blood. 
A) They are large, specialized monocytes. 
B) They ingest bacteria. 
C) They nonspecifically destroy virus-infected cells. 
D) They constitute 50 to 70 percent of all monocytes in the blood.

Which of these statements describes cytotoxic T cells

Which of the following is NOT accomplished by antibodies

____________________ ions switch on the contractile apparatus needed for the crawling-like motion of a leukocyte.

Antihistamines are effective in combating the allergic symptoms induced by a slow-reactive substance of anaphylaxis.

Which of the following is NOT attributable to components of the complement system

Penicillin is a possible ____________________, provoking hypersensitivity.

Which of these statements does NOT describe self-antigens

A(n) ____________________ is a walled-off structure within which indestructible offending material is imprisoned.

Humoural immunity involves the production of ____________________ by B lymphocyte derivatives.

Which cell type in the epidermis produces a pigment that absorbs ultraviolet light

Which type of cells do natural killer cells destroy

Which of these statements describes interferon

Which of these statements describes natural killer (NK) cells

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System: Sensory, Autonomic, Somatic

Principles of Endocrinology: The Central Endocrine Glands

The Endocrine Glands

Muscle Physiology

Cardiac Physiology

Vascular Physiology

The Blood

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

The Reproductive System

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Exam 11: Body Defences

Which of these statements describes cytotoxic T cells

Which of the following is NOT accomplished by antibodies

____________________ ions switch on the contractile apparatus needed for the crawling-like motion of a leukocyte.

Antihistamines are effective in combating the allergic symptoms induced by a slow-reactive substance of anaphylaxis.

Which of the following is NOT attributable to components of the complement system

Penicillin is a possible ____________________, provoking hypersensitivity.

Which of these statements does NOT describe self-antigens

A(n) ____________________ is a walled-off structure within which indestructible offending material is imprisoned.

Humoural immunity involves the production of ____________________ by B lymphocyte derivatives.

Which cell type in the epidermis produces a pigment that absorbs ultraviolet light

Which type of cells do natural killer cells destroy

Which of these statements describes interferon

Which of these statements describes natural killer (NK) cells

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System: Sensory, Autonomic, Somatic

Principles of Endocrinology: The Central Endocrine Glands

The Endocrine Glands

Muscle Physiology

Cardiac Physiology

Vascular Physiology

The Blood

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

The Reproductive System

Filters