Cardiovascular/Lymphatic
This is the collective name for unencapsulated lymphoid tissue.
What is mucosa associated lymphoid tissue (MALT)?
This acellular substance covers the anatomical crown of the tooth, is the hardest known material of biological origin, and is produced by ameloblasts before the tooth erupts.
What is enamel?
This innermost layer of the GI tract wall contains the epithelium, lamina propria, and muscularis mucosa.
What is the mucosa membrane?
This type of epithelium, characterized by a brush border, lines the highly convoluted mucosa of the gallbladder and enables its primary function of absorbing water and salts from the bile.
What is simple columnar epithelium?
Epithelium found throughout most of the respiratory tract, including the trachea?
What is ciliated pseudostratified columnar epithelium?
This type of vessel conforms to the surrounding organs such as the bone marrow, liver, and spleen. Uniquely, they have large gaps between endothelial cells.
What is a sinusoid?
What is keratinized stratified squamous epithelium?
These translucent serous membranes suspend the intestines from the posterior body wall, prevent the small intestine from tangling, and provide a pathway for blood vessels, lymphatics, and nerves.
What are the mesenteries?
These low cuboidal duct cells, often seen protruding into the acinus, serve as a defining feature that histologically distinguishes the pancreas from the parotid and lacrimal glands.
What are centroacinar cells?
Major function of Type II (Great) Alveolar cells?
What is surfactant secretion?
This structure arises from the bundle of His, often appearing fatter and vacuolated in slides. They conduct signals to the apex of the heart and up the ventricular walls.
What are purkinje fibers?
These serous glands, often found in the posterior one-third of the (root) of the tongue, open their ducts into the trenches surrounding the vallate papillae.
What are the glands of Von Ebner?
This enteric plexus lies in the submucosa and primarily controls movements (tension and folding) of the mucosa and glandular secretion in the GI wall.
What is the submucosal (Meissner) plexus?
This precursor molecule, produced by acinar cells, is converted in the duodenum to the protein-digesting enzyme trypsin.
What is zymogen (or trypsinogen)?
Epithelium found on the lingual surface of the epiglottis?
What is stratified squamous epithelium?
Common around joints due to compression of vessels, this form of blood flow allows blood to flow from one artery into another, avoiding restriction.
What are arterial anastomoses?
In mixed salivary acini, these crescent-shaped structures are formed by serous cells capping the mucous cells near the end away from the duct.
What are serous demilunes?
This region of the small intestine is identified histologically by Brunner's glands in the submucosa, which secrete alkaline mucus to protect it from acidic chyme coming from the stomach.
What is the duodenum?
The alkaline component of pancreatic juice that neutralizes stomach acid, protecting the duodenum.
What is sodium bicarbonate?
These folds in the nasal fossae create turbulence in the airflow for efficient warming and humidifying of air entering the respiratory system.
What are nasal conchae?
This lymphatic structure has no ovoid lymphatic nodules or germinal centers; instead, it has Hassal Corpuscles.
This segment of the salivary gland duct system, which features infolding of the basal plasma membrane with elongated mitochondria, is notably absent from the sublingual gland.
What is the intercalated duct (or striated duct)?
These antibacterial cells are located at the base of the intestinal crypts and secrete lysozyme to protect the mucosa from infection.
What are paneth cells?
The triangular space located at the corner of the hepatic lobule that contains a branch of the hepatic artery, a branch of the portal vein, and a bile ductule.
What is the portal space (or hepatic triad)?
This tissue is found in the inferior concha and engorges to prevent the epithelium from drying out.
What is erectile tissue?