GENERAL PATHOLOGY Flashcards
Germ layers
Ectoderm
Mesoderm
Endoderm
Ectoderm (forms the______)
Mesoderm (develops into_____)
Endoderm (forms the______)
exoskeleton
organs
inner lining of organs
Divisions of Pathology
A. Gross Pathology
B. Microscopic Pathology
Four Aspects of a Disease Process
A. Etiology
B. Pathogenesis
C. Morphologic and Molecular Changes
D. Clinical Manifestations
Stages of the Cellular Response to Stress and Iniurious Stimuli
A. Homeostasis
B. Adaptation
C. Cell Injury
D. Other Responses (Autophagy, Intracellular Accumulation of Substances, Pathologic Calcification, Cellular Aging)
• The innermost layer
Endoderm
• The middle lining
Mesoderm
Endoderm
Will develop into the following cells:
the Lung Cells (Alveolar Cell)
Thyroid Cells
Digestive Cells (Pancreatic Cell)
Mesoderm
• Will develop into the following organ cells:
the Cardiac Muscle Cells
Skeletal Muscle Cells
Tubule Cells of the Kidney
Red Blood Cells
Smooth Muscle Cells (in gut)
• The outermost part
Ectoderm
• Forms the exoskeleton (involves in giving structures, shape in a certain tissue or entity)
Ectoderm
Epidermis
Can be found in
skin cells of epidermis
neuron on brain
pigment cells
FOUR TYPES OF TISSUES:
• Epithelial Tissue
• Connective Tissue
• Muscular Tissue
• Nervous Tissue
• Functions to provide protection
• Can be found in the skin, also in the various linings of the organs and passages
Epithelial Tissue
Provides blood supply to the epithelium
Connects the tissue to bones, tendons, in order to provide nutrients, and blood supply to the different parts of the body
Connective Tissue
- The major ingredient in all connective tissue
COLLAGEN
Types of Connective Tissue:
• Connective Tissue Proper
• Cartilage
• Bone
• Blood
• Muscular Tissue
• Nervous Tissue
2 types of Connective Tissue Proper
Loose ct
Dense ct
Loose ct (3)
ARA
• Areolar
• Adipose
• Reticular
Dense ct (3)
RIE
Regular
Irreguar
Elastic
Cartilage (3)
Fibrocartilage
Elastic
Hyaline
Bone (2)
Compact
Spongy
Tissue involved in movement
Muscular Tissue
Three basic types of muscular tissue
• Skeletal muscle (Voluntary)
• Cardiac muscle (Involuntary)
• Smooth muscle (Involuntary)
• Send signal, impulse, and messages from the brain to other parts of the body
Nervous Tissue
• A broad and complex branch of science because we are dealing with diseases, including the effects of these diseases on our body and the consequences to our tissue and cells
GENERAL PATHOLOGY
Why do we need to understand Histology?
• Disease processes affect tissues in distinctive ways, which depend on the type of tissue and the disease itself.
• Understanding the changes that are characteristic of a disease requires detailed knowledge of the normal histology of cells and tissues and the range of normality.
• Knowing the type of tissue and their composition is important in the selection of the appropriate histopathologic technique and stain to be used.
• These changes within cells and tissues can be visualized using histopathologic techniques.
PATHOLOGY
• Taken from the Greek word “Pathos” and “Logos,” which means ______
study of suffering or disease