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Chapter 4: Tissues
1.
2.
3.
4.
I. Epithelial Tissue - covers
1. Adheres to each other and a
2. Does not have its own
3. May be
4. Epithelium
A. Simple squamous
Single layer of
Lines
B. Simple cuboidal
Single layer of
In bronchioles of
C. Simple columnar
Single layer of
Lines
Function:
D. Pseudostratified columnar
Appears to be layered –
(All cells
Lines parts of
Cilia moves trapped dust. Goblet cells secrete mucus.
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E. Stratified squamous
Many layers of
Covers
Covers skin – dries out and accumulates protein keratin.
F. Transitional epithelium
Lines
Function:
Relaxed – up to 8 layers
Stretched – 2–3 layers
G. Glandular Epithelium
Tissue that secretes fluid products
Examples – goblet cell –
sweat gland intestinal gland sebaceous gland salivary gland -
II. Connective Tissue
Located
Designed to
Three categories
Connective tissue proper
Supporting C.T.
Fluid C.T.
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Three basic components
Cells –
Protein fibers
Collagen –
Elastic –
Reticular Ground Substance – also called
Consists of
1. (Loose) Areolar C.T.
Thin,
Supports
2. Dense C.T.
Slow healing –
Regular –
Irregular –
3. Elastic C.T.
Occurs
4. Reticular C.T.
Supporting
5. Adipose
Stores
Functions:
6. Cartilage
Chondrocytes - are in small chambers called ___________ surrounded by ____________
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(A) Hyaline cartilage – supports
Found at end of bones in growth plates
(B) Fibrocartilage - found in
(C) Elastic cartilage – found in
7. Bone
Is called osseous tissue
Minerals (calcium salts) are deposited onto collagen fibers.
8. Blood
Blood plasma –
(A) Erythrocytes (red blood cells) –
(B) Leukocytes (white blood cells) Granulocytes
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Agranulocytes
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(C) Platelets
Function:
III. Muscle Tissue
(A) Skeletal –
long, cylindrical
multinucleated
striated
voluntary
(B) Cardiac –
shorter, branched cell
one or two nuclei
striations
involuntary
has intercalated discs
(C) Smooth –
muscles of internal organs
tapered cells
one nucleus
lacks striations
involuntary
A muscle cell is called
Cell membraneCytoplasm –
Muscle fibers -
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