LYMPHATIC SYSTEM

Question 1

A network of tissues and organs that help rid the body

of toxins, waste and other unwanted materials.

Answer 1

Lymphatic System

Question 2

• constitute a one-way pathway that
  parallels the venous system and eventually empties into the
  cranial vena cava or some of its tributaries
• drain the fluid (lymph) in the
  extravascular and interstitial spaces tissues

Answer 2

Lymphatic vessels

Question 3

• are discrete knots (small bean-shaped
  structures) of lymphoid tissue scattered along the course of
  lymph vessels
• filter the lymph and act as one
  of the first defenses against infection by harboring
  lymphocytes, plasma cells, and macrophages.

Answer 3

Lymph nodes

Question 4

• is an organ of immature animals, undergoing
  involution at puberty
• lies cranial to the heart, with portions extending
  along the trachea craniad into the ventral neck.

Answer 4

Thymus

Question 5

• is a lymphoid organ associated with the circulatory
  system.
• is considered as the largest lymphoid organ
  (in mammals) of the lymphatic system
• It is attached to the
  stomach either directly by connective tissue or by the
  gastrosplenic ligament

Answer 5

Spleen

Question 6

found only in birds, round sac located
just above the cloaca, reaches its greatest size in the chick
about 1 to 2 weeks after hatching and then shirks as the bird
ages

Answer 6

Bursa of Fabricius

Question 7

• lymphoid organs located in the walls of
  the small intestine; MALT
• s are classified both as primary and
  secondary lymphoid organs

Answer 7

Peyer’s Patches

Question 8

is an unencapsulated aggregate of lymphatic nodules

associated with the pharyngeal mucosa.

Answer 8

Tonsil

Question 9

shape of spleen in pig

Answer 9

long and thin

Question 10

shape of spleen in cattle

Answer 10

oblong

Question 11

shape of spleen in horses

Answer 11

sickle-shaped

Question 12

appears as a 
raised 
homogeneous 
band at the antimesenteric side of 
the mucosa

Answer 12

Ruminants