Intro To Gen Path Flashcards
Cells work together in functionally related
groups
Tissues
Types of tissues
- Epithelial – lining and covering
- Connective – support
- Muscle – movement
- Nervous – control
- Covers a body surface or lines a body
cavity - Forms most glands
Epithelial Tissue
Most diverse and abundant tissue
Connective Tissue
Main classes of connective tissue
– Connective tissue proper
– Blood – Fluid connective tissue
– Cartilage
– Bone tissue
Components of connective tissue
– Cells (varies according to tissue)
– Matrix
Common embryonic origin
mesenchyme
Structures of Connective Tissue Proper
- cells
- fibers
- ground substance
Cells found in connective tissue proper
– Fibroblasts
– Macrophages, lymphocytes (antibody producing cells)
– Adipocytes (fat cells)
– Mast cells
– Stem cells
What are the fibers
Collagen
Elastic
Reticular
branching fibers with a wavy appearance
Elastic
very strong & abundant, long & straight
Collagen
fills the extracellular space
Ground substance
Classifications of Connective Tissue Proper
Loose connective tissue
Dense Connective Tissue
What are Loose Connective Tissue
– Areolar
– Reticular
– Adipose
What are Dense Connective Tissue
– Regular
– Irregular
– Elastic
largely composed of
unilocular lipid-filled
adipocytes that specialize in
lipid storage,
White adipose tissue
largely composed of
multilocular adipocytes that
specialize in lipid burning.
Brown adipose tissue
Long, cylindrical cells
Skeletal Muscle Tissue
Spindle-shaped cells with
central nuclei
Smooth Muscle Tissue
Branching cells
Cardiac Muscle Tissue
Occurs in walls of heart
Cardiac Muscle Tissue
attached to bones
Skeletal Muscle Tissue
Location of smooth muscle
walls of hollow organs
Voluntary movement
Skeletal Muscle Tissue
Involuntary control
Smooth Muscle Tissue
Uni-nucleate
Cardiac Muscle Tissue
Intercalated discs
Cardiac Muscle Tissue
Obvious striations
Skeletal Muscle Tissue
No striations
Smooth Muscle Tissue
is composed of
neurons supported by
a framework of glial
cells and microglia
Nervous Tissue
Processes of these
cells combine to form
a delicate fibrillary
background
Neurophil