Transcript tonsil histology part

Tonsils- Physiological role
Provide Immunity
 trap bacteria and antigens
 allow the body to produce antibodies against them
 provide local immunity: viruses, bacteria and other infectious
contaminants and hold on to them before the immune system
goes in for the kill.
Process Lymphatic Fluid
 Tonsils process lymphatic or lymph fluid in unison with other
lymphoid tissue.
 Lymph fluid is circulated in the tissues of the lymphatic
system.
 The lymphatic system functions to remove interstitial fluid
from tissues and adjacent organs, to absorb fatty acids and
transport them into the circulatory system, and to transport
immune cells to and from lymph nodes.
 Lymph fluid contains fats, proteins and lymphocytes, which
are a type of white blood cells. It plays a primary role in
filtering and destroying germs and toxins.
Produce Antibodies
 Tonsils produce antibodies that neutralize respiratory infections
(e.g. pneumonia, bronchitis, ear infections, laryngitis, sinusitis and
rhinitis) that enter through the throat, mouth or nose.
 Antibodies (or immunoglobulins) are proteins that are found in
the blood and other bodily fluids. They are produced by various
components of the body's immune system and provide protection
against chemicals, viruses, parasites, fungi and bacteria.
 tonsillar B cells (a type of palatine tonsil cells) mature to produce
five classes of antibodies. They produce specific antibodies against
staphylococcus aureus, haemophilus influenzae, streptococcus
pneumoniae, poliovirus and diptheria toxoid.
TONSIL
HISTOLOGY PART
JACKIE PETER & DANIAL
HAFIZ
STRATIFIED SQUAMOUS
EPITHELIUM, SEMILUNAR
FOLD
LYMPHATIC
NODULE
DIFFUSE
LYMPHATICS
TISSUE
EPIGLOTTIS
VESTIBULAR FOLD
PARAEPIGLATTIC TONSIL, LARYNX, 1.5., CAT.
VESTIBULAR – A
chamber or channel
opening into another
part
Palatine Tonsil, Dog
In the dog the entire tonsil lies
within a fossa ( small hollow) and is covered in part by a semilunar
fold. The palatine tonsils of carnivores lack crypts.
STRATIFIED SQUAMOUS
EPITHELIUM, FOSSA
LYMPHATIC NODULE
FOSSA
SEMILUNAR FOLD
SKELETAL
MUSCLE
STRATIFIED
SQUAMOUS
EPITHELIUM
CRYPTS-A SMALL TUBULAR GLAND, PIT,
OR RECESS. f (x) increase surface area
STRATIFIED
SQUAMOUS
EPITHELIUM,
FOSSA
SEMILUNAR
FOLD
Palatine Tonsil, Dog. A portion of a tonsil and
semilunar fold. Palatine Tonsil, Dog
SALIVARY GLANDS
FOSSA
LYMPHATIC
NODULE
STRATIFIED
SQUAMOUS
EPITHELIUM,
TONSIL
DIFFUSE LYMPHATIC TISSUE
Palatine Tonsil, Dog. Mixed salivary glands are
associated with the wall of the tonsils in carnivores. In other
species only mucous glands are present.
SEROUS ACINUS
SEROUS
DEMILUNE
MUCOUS
ACINUS
ACINUS -A Small Sac-like Cavity In A Gland,
Surrounded By Secretory Cells.
Palatine tonsil - horse
STRATIFIED
SQUAMOUS
EPITHELIUM
CRYPT
LYMPHATIC
NODULES
PALATINE TONSIL, HORSE
STRATIFIED
SQUMOUS
EPITHELIUM
LYMPHATIC
NODULES
DIFFUSE
LYMPHATIC
TISSUE
CRYPT
PALATINE TONSIL, HORSE
LEUKOCYTE
INFILTRATION
STRATIFIED SQUAMOUS
EPITHELIUM
CRYPT