Histology-World!

 

 

 

Histology Glossary

 

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


T cell
Type of lymphocyte which is involved in cellular immunity

T tubule
Invagination of the plasma membrane seen in muscle fibers which allows for rapid calcium distribution

Taste buds
Structures found on some papillae in the tongue and in mucous membrane of the pharynx

Taste pore
Opening in the taste bud

Tectorial membrane
Membrane within the cochlea of the inner ear

Tendon organ
Encapsulated nerve endings stimulated by stretching

Tenia coli
Modification of the muscularis externa of the large intestine

Terminal bouton
Rounded flask like region at the end of a neuron

Terminal bronchioles
Bronchioles just before the respiratory branch

Theca externa
Layer of connective tissue on the outer portion of the follicle; outside the theca interna

Theca folliculi
Layer of cells around a primary follicle in the ovary

Theca interna
Layer of tissue underneath the theca externa

Theca lutein cells
Peripherally located in the corpus luteum

Thick filaments
Myosin filaments

Thin filaments
Actin filaments

Thromoboctye
Platelet

Thyroid follicle
Spherical collection of thyroid cells which surrounds colloid

Thyrotrop
Cell type in the anterior pituitary which secretes TSH

Tight junctions
Type of junction between epithelial cells

Tissue
A group of cells working together to perform a similar function. The four primary tissue types are: epithelial, connective, muscular, nervous

Tonofilament
Type of protein filament

Totipotential cell
Cell that is able to develop into a variety of different cell types; undifferentiated cell

Trabeculae
Spicules

Trabecular bone
Spongy bone; cancellous bone

Transitional epithelium
Type of epithelium found in the urinary tract

Transverse tubule
Invagination of the plasma membrane seen in muscle fibers which allows for rapid calcium distribution; T tubule

Trophoblast
Outer layer on the blastocyst

Tubular gland
Gland where the secretory part is tubular

Tubuli recti
Small channels lined by sertoli cells in the testis; straight tubules

Tubuloalveolar gland
Tubular gland which has a saclike portion at the end of the tube

Tunica adventitia
Outer layer of a blood vessel which is composed primarily of connective tissue

Tunica albuginea
Tough connective tissue covering a structure

Tunica intima
Innermost layer of a blood vessel or other tubular structure

Tunica media
Middle layer of vessels composed of smooth muscle

Tunica vaginalis
Membrane around the testis

Type II alveolar cell
Cell of the pulmonary alveoli which secretes surfactant

Unilocular adipose tissue
White adipose tissue; adult adipose tissue

Unipolar neuron
Neuron with one process which immediately divides; pseudounipolar neuron

Urinary space
Space between the glomerular capillaries and Bowman's capsule

Uriniferous tubule
A component of the nephron

Utricle
One of the sacs in the inner ear

Uvea
Vascular tunic of the eye

Vacuole
An apparently empty space within a cell

Valve of Kerckring
Plica circulares

Varicose vein
Twisted, dilated vein

Vasa nervorum
Blood vessels which supply a nerve trunk

Vasa recta
Blood vessels which form a hairpin-like loop within the kidney

Venous portal system
Vein which is between two capillary beds; an example is the hepatic portal systme

Venous sinus
Large channel for venous blood

Ventricular fold
Fold of the mucous membrane in the larynx

Venule
Small vein

Vestibular membrane
Membrane within the cochlea which separates the scala media from the scala vestibuli

Villi
Fingerlike projections seen on the mucosa of the small intestine

Volkmann's canals
Channels in compact bone which run transversely

Von Ebner's glands
Serous glands associated with circumvallate papilla

Histology hint from Sarah Bellham: If you are studying histology or involved in health care, you need a medical dictionary. You may as well get one as early in your career as possible to maximize the benefit. I recommend: Stedman's Medical Dictionary or Dorland's Illustrated Medical Dictionary, 30th Edition.