P2 histo lab

Lymphoid

What organ? Palatine tonsil

cryptLined with?

Stratified squamousepithelium

Secondary nodule

What organ? Thymus

lobules

No hylus

Capsule

cortex

medulla

What are the areas filled with?

Lymphocytes

No germinal centers

Hassall Corpuscle- enveloped by reticular cells

T Lymphocytes

What organ?Spleen Fibrous capsule

White pulpSecondary nodule

Red pulp

Central arteriole

PAL rich in T Lymphocytes

Red pulp with splenic cords and venous sinuses

capsuleWhite pulp

What organ? Lymph node

Cortex

Medulla

paracortex

hilus

Secondary nodule

Germinal center

All located in the outer cortex

Subscapular sinus

Capsule

Cortex

Afferent lymphatic vessel

Stomach

Primary lymphatic nodule

Unencapulated lymphoid tissue

Skin and Appendages

Thick Skin

Stratum spinosum

melanocytes

Dermal papillae

Thin Skin

Thin skin No thicker then the rest of the epidermis

Stratified SquamousEpithelia

Keratinized

What is it?Skin

Keratinized Stratified SquamousEpithelium

Dermis-Solid EosinophilicTissue

Hypodermis=SubcutisEosinophilicIslands

Where are we? Thick Skin

What kind of tissue are the dermis & Hypodermis?

Dense Irregular Connective Tissue

Adipose Tissue

What area of the skin? Hypodermis

Peripheral Nucleus

Stratum Corneum

Stratum Granulosum

Stratum Spinosum

Stratum basale

Dermis

Where are we? Thick Skin

Dermis

Hypodermis

Dense IrregConnective Tissue

What is it? Thin SkinBlue StainedElastic, Collagen,& Reticular Fibers

ORAL REGION ESPHAGUS AND STOMACH

tongue

Serous Glands

MucousGlands

Skeletal muscle

filiform

Hyper keratinizedNo tastebuds

Fungiform s mixed in

tongue

circumvallate Rich in taste bud

Von Ebners Glands - Secretes a watery fluid that dissolves food constituentsSerous glands

foliate

Lingual Salivary Glands - Exocrine glands because the secretion product Is released into a cavity (oral cavity).

Stratified Squamous Epithelium

esophagus

Stratified Squamous Epithelium

Muscularis Mucosa – has smooth muscle

sub mucosa

stomach

mucosa

submusca

stomach

Gastric pits

Lined by simple columnar epithelium

Parietal cellsProduce HCL

Chief cellsProduce pepsinogen

Mucus secreting cells

duodenum

duodenum

Brunners glands

Goblet cells

Muscularis mucosa

Brunners glands

submucosa

Circular smooth muscle

Longitudinal smooth muscle

Auerbach plexus

jejunum

mucosa

submucosa

Muscularis externa

serosa

plicae

villi

Paneth cellsContain antibacterial cells

Goblet cells

Brush boarder

Crypts of lieberkuhn

Simple columnar

Ileum

Ileum

Payer patchA lot of lymphocyte

colon

Crypts of lieberkuhn

Lymphatic nodule

myenteric plexus

Teniae coli

Stratified squamous

Simplecolumnar

Anorectal junction

Keratinized squamous

appendixSecondary lymphatic nodule

DIGESTIVE GLANDS

Submandibular Gland

Intralobular striated duct

serousmucus

demilune

capsule

Submandibular Gland

Interlobular ductsPseudo stratified epitheliumExcretory gland

Parotid Gland

Intralobular striated duct

Interlobular ductsParotid Gland

Serous acini

septa

Intralobular striated duct

Intercalated ductsLess cytoplasmSimple cuboidal

Parotid Gland

pancreas

Islets of langerhand

pancreas

Islets of langerhandWith Alpha and Beta cells

Zymogen granules

pancreas

Interlobular ductSimple columnar

pancreas

AciniZymogen granules

Centeroacinar cells

liver

Central vein

sinusoid

Portal veinWith CT

hepatocytes

Kupffer cellsThe macrophage

liver

gallbladder

Smooth m

serosa

gallbladder

Simple columnar

Lamina propira

Smooth m

RESPIRATORY SYSTEM

Trachea

thyroid

esophagus

Smooth mucles

Trachealis muscle

Trachea

Ciliated pseudostatified columnar

Hyaline cartilage

Lamina propria

submucosa

lungartery

BronchioleCiliated simple columnar

alveoli

Alveoli duct

lung

Type 2 pneumocyte (foamy)

Type 1 pneumocyte

Clara cell

lungBronchus- has cartilage

Ciliated psuedostratifided columnar