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Histology Block 1
CWRU SOM Histology Block 1
50
Health Care
Graduate
07/19/2009

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Cards

Term
Four Basic Tissue Types
Definition
Epithelia
Connective Tissue
Muscle
Nervous Tissue
Term
Stem cells
Definition
A cell that retains the capacity to produce many of the adult cell types
Term
Pluripotent
Definition
The ability to differentiate into any adult cell type
Term
Epithelia
Definition
The layer of cells that line surfaces pf the body such as compartments that have a volume of fluid enclosed.
Term
Trophoblast
Definition
Outer cell mass in the blastocyst that is made of simple squamous cells
Term
Embryoblast
Definition
The inner cell mass of the blastocyst
Term
3 Germ layers
Definition
Ectoderm, mesoderm, endoderm
Term
Mesenchymal Cells
Definition
The tissues have high motility and the ability to differentiate into a variety of cells. This is the precursor to fibroblasts, macrophages, leukocytes and muscle
Term
Gastrulation
Definition
the invagination of epiblast cells into the interior of the embryo to form the mesoderm
Term
Neural Tube
Definition
Precursor to the brain, spinal cord and peripheral nervous system
Term
Endothelium
Definition
epithelial layer that lines the inner surface of the blood vessels and the heart
Term
Epidermis
Definition
The epithelial layer on the outer surface of the skin
Term
Connective Tissue
Definition
consists of cells that are embed in an extracellular matrix produced by the connective tissue cells. I.e. blood, tendons, cartilage, macrophages, fibroblasts and bone.
Term
Muscle and the 3 types
Definition
Cells that are specialized to produce contractile force on the structures to which they are attached. There are three types: smooth (organized in layers around tubular organs: arteries and veins), skeletal (striated: component of muscles that generate force), and cardiac (located within wall of heart).
Term
Nervous Tissue
Definition
consists of nerve cells and glial cells, which make up the central and peripheral nervous system.
Term
4 Characteristics of epithelial cells
Definition
1. arranged in one or more layers on a basement membrane
2. Basement membrane firmly attaches epithilial cells to connective tissue
3. They are bonded to their neighboring cells in an adhesive manner to form a continuous partition.
4. They are polarized with a basal (contacts basement membrane) side and apical (contacts lumen) side.
Term
7 Types of epithilium
Definition
Simple squamous, simple cuboidal, simple columnar, transitional, stratified squamous, stratified cuboidal, pseudostratified columnar
Term
Villi
Definition
Outward cellular projections
Term
Glands
Definition
Epithelial cells that produce peptides, proteins, mucoproteins and other molecular for secretion form the apical end of the epithilial cell
Term
Exocrine glands
Definition
Secrete products into the lumen
Term
Endocrine glands
Definition
secrete products through basement membrane into extracellular matrix to be absorbed into the bloodstream via capilarries
Term
Parenchyma
Definition
Bulk of the organ and comprises the functional part
Term
Stroma
Definition
The connective tissue of the organ
Term
Metaplasia
Definition
Change from one cell type to another
Term
Macrophages
Definition
Cells that have the capacity to phagocytize bacteria
Term
Mechanism by which cell receive nutrion
Definition
Diffusion
Term
Mechanism by which molecules move through a cell
Definition
Thermal motion / brownian motion
Term
Erythroblast
Definition
a precursor to mature erythrocytes
Term
Plasma cells
Definition
part of the humoral immune system which produce antibodies that circulate in the blood
Term
3 basic layers of tubular organs
Definition
inner epithelium, middle layer of connective tissues and smooth muscle(may include gland), and outer layer of connective tissue that either separates or joins the organ to other structures
Term
Diameter of RBC
Definition
7 microns
Term
Types of leukocytes
Definition
Lymphocytes, Polymorphonucleur Leukocytes, Eosiniphils, Basophils
Term
Hilum
Definition
Area of the organ where you have arteries, veins and lymphatics entering
Term
composition of arteries
Definition
characterized by thick walls, smaller and circular
Term
Veins
Definition
Characterized by thinner walls, larger misshapen, and have valves
Term
Lymphatics
Definition
characterized by very thing walls, sometimes single cellular and valves
Term
Parenchyma
Definition
Functional component of a tissue
Term
Stroma
Definition
Supporting component
Term
Metaplasia
Definition
Changing of a cell from one type to another
Term
Ectoderm
Definition
"attracto-derm" includes all the attractive elements, including brains, lens of eye and nervous system, skins, etc
Term
Mesoderm
Definition
"Meanstoderm" gives you the means to do things i.e. bladder, muscular system, bone, tendons, cardiovascular system
Term
Endoderm
Definition
Inside membranes, digestive tract
Term
Types of connective tissue
Definition
Connective Tissue Proper
Specialized CT
Term
Connective Tissue Proper
Definition
Loose and Dense
Term
Types of Dense Connective Tissue
Definition
Regular and Irregular
Term
Types of lymph aggregates (explain)
Definition
Lymph nodules - aggregations of lymphocytes that are not encapsulated
Lymph nodes - aggregations of lymphocytes that are encapsulated
Term
Serosa
Definition
Mesothelium and adventitia
Term
Describe skeletal muscle
Definition
Striated muscle in which the nuclei are on the sides in a transverse section and in longitudinal section are elongated
Term
3 Layers of digestive tract
Definition
Mucosa, submucosa, and muscularis externa
Term
Lamina Propria
Definition
Connective Tissue Layer
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