Tuba Flashcards
Where does the tonsilla palatina develop from?
A) First pharyngeal pouch
B) Second pharyngeal pouch
C) Third pharyngeal pouch
D) Second pharyngeal arch
E) Third pharyngeal arch
B) Second pharyngeal pouch
Where is the lymph fluid that comes to the lymph node via afferent lymph vessels first emptied?
a) Medullary vein
b) High endothelial venule
c) Subcapsular sinus
d) Medullary sinus
e) Paratrabecular sinus
c) Subcapsular sinus
Which cells found in the lymph node are both phagocytic and antigen-presenting cells?
a) Lymphocytes
b) Macrophages
c) Follicular dendritic cells
d) Dentritic cells
e) Reticular cells
b) Macrophages
Which of the following is right about the development of the lymphatic system?
a) Lymphatic vessels are originated from the anterior cardinal veins
b) Lymphatic vessels arise from the endothelium of arteries.
C) The retroperitoneal lymph sacs are bilaterally on the posterior abdominal wall
d) The development of the lymphatic system begins simultaneously with the cardiovascular system
Cisterna chyli is located ventral to the retroperitoneal lymph sac
a) Lymphatic vessels are originated from the anterior cardinal veins
Which of the following is the distinguishing feature of the blood-thymus barrier from the blood-organ barriers found in other parts of the body?
a) Endothelial cells of the capillaries
b) Basal lamina of epithelial reticular cells (Type 1)
C) Perivascular connective tissue
d) Basal lamina of endothelial cells
e) Epithelial reticular cell sheath
C) Perivascular connective tissue
Where does the thymus develop from?
a) Dorsal bulbar part of fourth pharyngeal pouch
b) Solid dorsal part of third pharyngeal pouch
c) Long ventral part of third pharyngeal pouch
d) Long ventral part of fourth pharyngeal pouch
e) Second pharyngeal pouch
c) Long ventral part of third pharyngeal pouch
Which of the above statements are true?
I. Peyer’s patches are the mucosa-associated lymphoid tissue found in the stomach.
II. Lymphatic vessels carry lymph fluid into the venous system.
III. Mucosa-associated lymphoid tissue (MALT) is the secondary lymphoid structure.
IV. There is a germinal center in the middle of the primary lymphoid nodules.
V. B lymphocytes mature and become functional in the bone marrow.
a) II, III, IV, V
b) I, II, III, IV
C) I, II, V
d) II, III, V
e) I, II, IV
d) II, III, V
Which of the following is the first area where antigens in the blood are encountered with lymphocytes in the white pulp of spleen?
a) Billroth cords
b) Germinal center
c) A. centralis
d) Periarteriolar lymphatic sheath
e) Marginal zone
e) Marginal zone
which of the following choices correctly gives the location that t lymphocytes differentiation takes places…
cortex of tyhmus
cortex of tyhmus
which of the following structures is found between the sinusoids in the red pulp of the spleen and formed by the population of reticular cells, monocytes, dendritic cells, macrophages and reticular fibers..
billroth cords
billroth cords
I. Lymph fluids flows only from the peripheral tissues toward the heart.
II. Lymphatic vessels are thin-walled vessels and are lined simple squamous endothelial cells.
III. The mucosa associated tissue is primary lypmhoid structure.
IV. The parenchyma of the tonsil is composed of numerous lymphoid nodules.
V. T and B lymphocytes mature and become functional in bone marrow. Which of the above statements are true
I, II, IV
Which cell found in the lymph node sythesis type III collagen and play a supporting role in the node
Reticular cells
Which of the following is right about the development of lymphatic system –
Lymphatic vessels arise from the endothelium of veins
Lymphatic vessels arise from the endothelium of veins
Where does thymus develope from
Third pharyngeal pouch
