Answer to Question 1
Correct Answer: 3
Rationale 1: Antigens form in response to antibodies.
Rationale 2: Mast cells are a part of the inflammatory response.
Rationale 3: The cells of the immune system secrete cytokines.
Rationale 4: Antibodies are substances that attack antigens. They are not secreted by the immune system.
Global Rationale: When challenged by antigens, certain cells of the immune system secrete cytokines, which are substances that help the body mediate and intensify the immune response. Because cytokines have powerful actions on the immune system, the body generally only produces them when challenged by an antigen; their production is rapid though transient. Antigens form in response to antibodies. Mast cells are a part of the inflammatory response. Antibodies are substances that attack antigens. They are not secreted by the immune system.
Answer to Question 2
Correct Answer: 2
Rationale 1: Immunosuppressants should not affect serum calcium levels.
Rationale 2: Immunosuppressants are used to reduce joint inflammation.
Rationale 3: Immunosuppressants should decrease erythrocyte sedimentation rates.
Rationale 4: Immunosuppressants would decrease white cell counts.
Global Rationale: Immunosuppressants are used to prevent transplant rejection and for the treatment of autoimmune disorders such as RA, SLE, myasthenia gravis, and Hashimoto's thyroiditis.
Endothelial cells under the microscope.
Reindeer antlers grow again each year under a layer of fur called velvet. This reindeer is losing th
Endocrine System
insect's compound eye, revealing photoreceptor cells, support cells and pigment cells
Dose–response relationship
Substances Filtered, Reabsorbed, and Excreted by the Kidneys