What effect does osteoporosis have on the bones and who is most susceptible to this condition?
Osteoporosis, literally meaning "porous bones," is a condition in which bones lack the minerals required to keep them strong. In osteoporosis, bones-primarily of the hip, wrist, and spine-become so weak and brittle that they fracture readily. The process begins slowly in the third and fourth decades of life. Women are especially susceptible after menopause because of the accompanying loss of estrogen, which increases the rate at which bone mass is broken down. Although osteoporosis is viewed primarily as a woman's disease, more than 30 percent of all men will be affected by age 75.?
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Which of the following pairs is mismatched? (Select all that apply.)
a. appendix: large intestine b. mesenteric lymph nodes: urogenital tract c. effector compartment: induction of adaptive immune responses d. adenoids: base of nose e. villi: small intestine f. Peyer's patches: afferent lymphatics.
You have isolated a subset of CD25+ CD4+ T cells from the blood that have T-cell receptors specific for a self antigen but do not proliferate when challenged with the antigen in vitro
What is the name given to these T cells, and what role are they thought to have in preventing autoimmunity? What will be an ideal response?
Estrogen controls secondary female sex characteristics such as breast development.
Answer the following statement true (T) or false (F)
When would a postmortem most likely be done
A. as part of surgery B. after the patient is discharged from the hospital C. prior to a diagnostic procedure D. after death