Chapter 4 Tissues. Four Tissue Types Epithelia Connective Muscle Nervous.
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Transcript of Chapter 4 Tissues. Four Tissue Types Epithelia Connective Muscle Nervous.
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Chapter 4
Tissues
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![Page 3: Chapter 4 Tissues. Four Tissue Types Epithelia Connective Muscle Nervous.](https://reader034.fdocuments.us/reader034/viewer/2022050721/5697bfdc1a28abf838cb10f8/html5/thumbnails/3.jpg)
Four Tissue Types
• Epithelia
• Connective
• Muscle
• Nervous
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Epithelia
Cell Shapes
1. Squamous
2. Cuboidal
3. Columnar
Arrangement
1. Simple
2. Stratified
3. Pseudostratified
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Characteristics of Epithelia
• Apical surface• Basal surface• Basement membrane• Avascular• Highly mitotic• Minimal neural
connections
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Simple Squamous
Primary locations: air sacs of lungs, blood vessels, lymph vessels, etc.
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Simple Cuboidal
Primary locations: kidney tubules, glands, and ducts.
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Simple Columnar Epithelium
Locations: digestive tract, gallbladder, some ducts and glands.
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Simple Columnar Epitheliumwith cilia
Locations: small bronchi and uterine tubules
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Stratified Squamous Epithelium
Locations: skin, mouth, esophagus, and vagina.
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Stratified Cuboidal Epithelium
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Stratified Columnar Epithelium
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Transitional Epithelium
Locations: lines the ureters, urinary bladder, and part of urethra.
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Pseudostratified Columnar Epithelium
Locations: trachea and most of upper respiratory tract.
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Endocrine Glands
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Exocrine Glands
• Merocrine – chemical release – salivary glands.
• Apocrine – Pinch off portions of cells – Mammary glands
• Holocrine – slough off the whole cell – sebaceous glands.
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Connective Tissues
• Contain a matrix
• Some contain fibers
• Have a variety of functional cells
• Most are vascular
• Most have neural connections
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Areolar Connective
Location: under epithelia, mucous membranes and surrounds capillaries
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Adipose Connective
Location: everywhere
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Dense Regular Connective
Location: tendons and ligaments
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Reticular Connective
Location: lymph organs like spleen, nodes, and bone marrow.
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Dense Irregular Connective
Makes up capsules for organs and joints and also in dermis
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Elastic (Dense) Connective
Walls of large arteries, in ligaments around spine and in walls of bronchii
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Hyaline Cartilage
Forms most of embryonic skeleton, ends of long bones, costal cartilages, nose, trachea, and larynx.
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Fibrocartilage
Intervertebral discs, pubic symphysis and discs of knee joint.
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Elastic Cartilage
External ear and epiglottis
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Bone
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BloodErythrocytes, Leukocytes &
Thrombocytes)
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Membranes
• Mucous
• Serous
• Synovial
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Muscles Tissue Types
• Skeletal (striated)
• Cardiac
• Smooth
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Striated Muscle
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Cardiac Muscle
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Nervous Tissue
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Smooth Muscle
Found mostly in the walls of hollow organs
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Terms to Know• Adenoma• Autoimmune disease• Lupus• Marfan’s syndrome• Atrophy• Hypertrophy• Tissue rejection• Xenotransplantation• Adhesions• Keloid