tissues of the body. cells combine to form tissues, and tissues combine to form organs. there are...
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•Cells combine to form tissues, and tissues combine to form organs.
•There are four primary types of tissues– Epithelial tissue– Connective tissue– Muscle tissue – Nervous tissue
Found in the outer cover of body and in the inner cavities.
Has Two Types: Membranous epithelia:
form the coverings or linings of organs.
Glandular epithelia:form exocrine and endocrine glands.
Epithelial Tissue
Glandular Epithelia
• Epithelial tissues illustrate a basic biological principle: that structure closely correlates with function
• Binds the cells and organs of the body together – All connective tissues
consist of two basic components: cells and extracellular fibers
• Two types of connective tissue are: – Fibrous Connective
tissue.– Specialized Connective
tissue
Section 4-1Connective Tissue
• An important structural component of organs – Consists of two types:
•Dense connective tissue •Loose connective tissue
Connective Tissue
• Perform specific functions essential to homeostasis
• The body contains three types of specialized connective tissue:
•Cartilage•Bone•Blood
Specialized Connective Tissues
•Cartilage – Consists of specialized cells embedded in a matrix of extracellular fibers and other extracellular material
•Blood –Contains blood cells, platelets, plasma
Osseous Tissue• Bone
– Consists of bone cells (osteocytes) and a calcified cartilage matrix•Two types of bone tissue exist: spongy and compact
• Consists of specialized cells that contract when stimulated
• The body has three types of muscle tissue:
•Skeletal (voluntary , striated)
•Cardiac (involuntary , striated)
Smooth (involuntary . non-striated)
Muscular Tissue
Nervous Tissue
• Contains specialized cells that conduct impulses
• Conducting cells, called neurons, transmit impulses from one region of the body to another.
• Nonconducting cells, neuroglia, are a type of nervous system connective tissue.
Organ Systems
• Tissues combine to form organs.
– Organs are discrete structures that have evolved to perform specific functions
– Most organs do not function alone, they are part of a group of cooperative organs, called an organ system.
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