Lymphatic-Endocrine

Question 1

The thyroid gland is composed of follicular cells that produce thyroxine (T4) and triiodothyronine (T3)

Answer 1

True

Question 2

The lymph node is an encapsulated lymphoid organ responsible for “educating” lymphocytes to become immunocompetent cells.

Answer 2

False

Question 3

The adrenal medulla is divided into three zones: zona glomerulosa, zona fasciculata, and zona reticularis

Answer 3

True

Question 4

The secondary lymphoid organs are the sites where immune responses occur.

Answer 4

True

Question 5

The pancreas has both endocrine and exocrine functions, with the endocrine portion consisting of the islets of Langerhans.

Answer 5

True

Question 6

The adrenal glands located just above the kidneys are encapsulated.

Answer 6

True

Question 7

The parathyroid glands are located on the posterior surface of the thyroid gland and secrete parathyroid hormone (PTH) which regulates the calcium levels in the blood.

Answer 7

True

Question 8

The nodules present in the paracortex of the lymph nodes contains lymphoid tissue rich in T cells.

Answer 8

False

Question 9

The pineal gland secretes the hormone melatonin, which helps regulate circadian rhythms and the sleep- wake cycle.

Answer 9

True

Question 10

Palatine tonsils are enlarged with 10-20 deep invaginations or tonsillar crypts in which the epithelial lining is densely infiltrated with lymphocytes and other leukocytes

Answer 10

True

Question 11

The adrenal medulla secretes corticosteroids, such as cortisol and aldosterone.

Answer 11

False

Question 12

Oxytocin and antidiuretic hormone (ADH) are produced and stored in the posterior pituitary gland.

Answer 12

False

Question 13

The splenic sinusoids are lined by unusual endothelial cells called stave cells, which are elongated and aligned parallel to the blood flow, with open slits between the cells.

Answer 13

True

Question 14

Peyer’s patches are very large clusters of lymphoid follicles located in the wall of the cecum which allow close monitoring of microorganisms in the gut.

Answer 14

False

Question 15

The blood-thymus barrier is a protection region in the thymic cortex extending towards the medulla which function includes ensuring antigens escaping the bloodstream do not reach the developing thymocytes.

Answer 15

False

Question 16

The thymic medulla contains fewer lymphocytes than the cortex.

Answer 16

True

Question 17

The islets of Langerhans in the pancreas contain alpha cells that produce insulin.

Answer 17

False

Question 18

The basophils in the anterior pituitary gland (somatotrophs and mammotrophs) secrete hormones such as growth hormone (GH) and prolactin.

Answer 18

False

Question 19

IgG is present in almost all exocrine secretions.

Answer 19

False

Question 20

TECs manufacture thymosin, serum thymic factor, thymopoietin, and thymic stromal lymphopoietin, hormones that function in the transformation of immature T lymphocytes into immunocompetent T cells.

Answer 20

True