Regarding the lymphocytes:
The lymphocytes are the most abundant white cells of the blood.
Lymphocytes only leave the blood at sites of inflammation
B lymphocytes respond to antigens in the extracellular fluid
All B lymphocytes become plasma cells after they have been stimulated
Active immunity may be produced by:
Contracting a disease
Receiving a vaccine
Receiving gamma globulin injection
Both A and B
Regarding the functions of T lymphocytes:
T lymphocytes mature in the thyroid gland
All T cells secrete cytotoxic materials
T cells respond to proteins on the surface of host cells
T cells secrete IgG when they are activated.
Which of the following medications is contraindicated in patients with allergy to sulphonamides?
Levobunolol
Bimatoprost
Brinzolamide
Brimonidine
Which class of antibodies is abundant in body secretions?
IgM
IgA
IgG
IgE
The primary function of the lymphatic system is:
Transporting nutrients and oxygen to tissues
Regulation of temperature, fluid, electrolytes, and pH balance
Production, maintenance, and distribution of lymphocytes
Removal of carbon dioxide and waste products from tissues
What is the most abundant chemical in red blood cells?
Myoglobin
Globin
2,3-diphosphoglycerate
Haemoglobin
Which of the following would be considered a normal white blood cell count?
Over 25,000 WBC/cc
Less than 2,000 WBC /cc
5,000 to 9,000 WBC/cc
10,000 to 25,000 WBC/cc
An 18-year girl pustular acne having these lesions over the past several years, which resolved spontaneously. However, the lesions have increased in quantity recently. The dermatologist prescribes an oral antibiotic for the treatment of these lesions. The drug most likely acts by which of the following mechanisms?
Blocks ribosomal initiation complex formation
Causes misreading at translation initiation
Interferes with translocation during translation
Prevents binding of aminoacyl- tRNA to ribosomes
Regarding the inflammatory response:
Tissue swelling is the first stage of the inflammatory response
Mast cells secrete chemotactic agents that attract lymphocytes
Macrophages secrete vasoactive materials during the inflammatory response
The inflammatory response can be triggered by antibody binding to the surface of micro-organisms.
