Mt SAC Lab Unit 3 Histology
Tooth
Enamel Dentin Pulp
Tongue
Taste bud
Tongue Cross section of skeletal muscle Mucous acini of sublingual salivary gland Longitudinal section of skeletal muscle OMIT: Serous cells of salivary gland
Tongue Longitudinal section of skeletal muscle
Salivary Glands You have one slide with all three glands on separate sections. Saliva consists of watery (serous) and mucous (thicker, sticky) secretions. Sublingual – Contains only mucous cells Parotid – Contains only serous cells (which secrete into ducts) Submandibular (slide is labeled submaxillary) – Contains both mucous and serous cells
Sublingual Salivary gland Mucous acinus with mucous cells inside Sublingual glands have only mucous cells
Sublingual Salivary gland Sublingual glands have mostly mucous cells Mucous acinus with mucous cells inside
Parotid salivary gland Serous cells Ducts Parotid glands have many ducts
Parotid Salivary gland Duct Serous cells Parotid glands have many ducts
Parotid Salivary gland Parotid glands have many ducts Serous cells Ducts
Parotid Salivary gland Parotid glands have many ducts Serous cells Ducts
Submandibular Salivary Gland Duct Serous cells Mucous acinus with mucous cells inside Submandibular glands have both mucous cells and ducts
Submandibular Salivary Gland Submandibular glands have both mucous cells and ducts Duct Serous cells Mucous acinus with mucous cells inside
Submandibular Salivary Gland Submandibular glands have both mucous cells and ducts Duct Serous cells Mucous acinus with mucous cells inside
Small Intestine Duodenum Jejunum Ileum
Duodenum Plica Villus Plica are the folds into the intestine. Villi are the finger-like projections into the lumen. Plica and villi are found in all three parts of the small intestine.
Duodenum Mucosa Submucosa Muscularis externa Adventitia
Duodenum Villus Brunner’s glands Brunner’s glands are only found in the duodenum. They produce bicarbonate to deactivate the acidity of the chyme from the stomach. The villi of the duodenum are short and fat
Layers of the Small Intestine Mucosa – Villi are located here Submucosa – Brunner’s glands are located here (duodenum only) Muscularis externa – Made of smooth muscle to push food along Serosa (or adventitia) – Made of loose connective tissue
Duodenum Villus Mucosa Submucosa Muscularis externa Serosa Brunner’s glands
Jejunum Plica Villus
Jejunum Villi The villi of the jejunum are tall and skinny
Jejunum Mucosa Submucosa Muscularis externa Serosa
Ileum Plica Villus
Ileum The villi of the ileum are not individually separate Villi
Ileum Mucosa Submucosa Muscularis externa Serosa
Colon
Villus Goblet Cells The villi of the colon are blending together and are full of goblet cells
Colon Goblet cells
Colon Mucosa Submucosa Muscularis externa Serosa
Appendix
Lymphatic nodules
Appendix Submucosa Mucosa Muscularis externa Serosa
Liver Hepatic triad (artery, vein, bile duct) Central vein Hepatic lobules
Liver Lobule Central veins Hepatocytes Sinusoids
Hepatocytes Sinusoids Central vein Hepatic triad
Hepatocytes Sinusoids Central vein Hepatic triad
Hepatocytes Sinusoids Central vein
Gallbladder
Mucosa Submucosa And Muscularis externa blended in one layer Serosa
Gallbladder
Mucosa Serosa Submucosa And Muscularis externa blended in one layer
Pancreas Acinar cells (secrete digestive enzymes and bicarbonate) Islet of Langerhans (secretes insulin)
Pancreas Acinar cells Islet of Langerhans
Pancreas Islets of Langerhans Acinar cells
Kidney Has two regions Cortex – Glomeruli and convoluted tubules located here Medulla – Only convoluted tubules located here
Kidney Bowman’s capsule Convoluted Tubules Glomerulus Capsular space
Kidney Cortex Medulla Glomerulus Convoluted tubules
Kidney Glomerulus Convoluted tubules
Kidney Glomerulus Convoluted tubules
Pancreas Islets of Langerhans Acinar cells
Lung Bronchiole Alveoli
Lung Alveoli
Lung Alveolar wall Alveolar space
Parathyroid Gland
Many nuclei, all the same size and shape. Looks like view from above of FBI hats…makes you paranoid, parathyroid!
Parathyroid Gland Many nuclei, all the same size and shape. Looks like view from above of FBI hats…makes you paranoid, parathyroid!
Thyroid Gland Follicles with colloid
Thyroid Gland Follicles with colloid
Adrenal Gland
Capsule Cortex Adipose
Adrenal Gland Capsule Cortex Adipose
Adrenal Gland Adipose Capsule Cortex
Mammary Gland
Alveoli with colloid (milk) Duct
Ovary, Cat Cortex (where developing gametes are) Medulla
Ovary, Cat Primary follicles Graafian follicles Secondary follicle
Ovary, Cat Corpus luteum
Ovary, Cat Primary follicles Secondary follicle Graafian follicle
Ovary, Cat Primary follicles Secondary follicle Graafian follicle
Ovary, Cat Oocyte (called an ovum after it is released) Antrum (contains fluid that fills up and pops the follicle open during ovulation) Corona radiata (contains nutrients for the egg as it travels in fallopian tube) Zona pellucida (blue ring, where sperm bind) Granulosa cells (make sex hormones and growth factors)
Corpus Luteum, Monkey
Fallopian Tube
Uterus
Uterus Endometrium and Myometrium Endometrium Myometrium Uterine glands
Uterus Endometrium Uterine glands
Uterus Endometrium Uterine glands
Uterus Myometrium
Placenta
Chorionic villi with fetal blood Maternal blood
Placenta Chorionic villi with fetal blood Maternal blood
Umbilical Cord Umbilical arteries Umbilical vein
Testes; Seminiferous tubules
Interstitial cells of Leydig (secrete testosterone)
Spermatozoa
Flagellum Head
Spermatozoa Flagellum Head Midpiece