What is the function of the thymus gland?
A) Produces stem cells
B) Programs B lymphocytes to become regulator or effector B cells
C) Develops the lymphatic system
D) Programs T lymphocytes to become regulator or effector T cells
D
Feedback:
The thymus gland is located in the neck below the thyroid gland. It extends into the thorax behind the top of the sternum. The thymus gland produces lymphocytes during fetal development. It may be the embryonic origin of other lymphoid structures such as the spleen and lymph nodes. After birth, the thymus gland programs T lymphocytes to become regulator or effector T cells. The thymus gland becomes smaller during adolescence but retains some activity throughout the life cycle. Options A, B, and C are incorrect.
You might also like to view...
Subjective signs and symptoms of viral hepatitis include which of the following?
a. severe vomiting and diarrhea c. generalized weight gain b. anxiety and hyperactivity d. anorexia and photophobia
The National Patient Safety Goals of The Joint Commission (TJC) are established goals to reduce the risks for injuries to patients and provide a safe environment. Which practice has been instituted as a result of these goals established by TJC?
a. Use of the automatic medication dispenser equipment b. Handwashing to prevent infections c. Provision of patient information to the nurse covering for breaks d. Use of two patient identifiers when providing care or treatments
The perinatal nurse includes the following when explaining the physiology of artificial rupture of membranes to the student nurse: rupture of membranes causes a release of arachidonic acid,
which converts to prostaglandins, substances known to stimulate oxytocin in the pregnant uterus. A) True B) False
The home health nurse instructs the 75-year-old woman that daily exercise of a minimum of ____ minutes a day is as beneficial as a longer period of extreme exercise on an irregular basis
a. 15 b. 20 c. 30 d. 45