Download Muscle Tissue Types Muscle Tissue Types

Muscle Tissue
Muscle Tissue Types
• Function is to produce movement
• Three types
• Skeletal muscle
– Under voluntary control
– Contracts to pull on bones or skin
– Produces gross body movements or facial
expressions
– Characteristics of skeletal muscle cells
– Skeletal muscle
– Cardiac muscle
– Smooth muscle
• Striated
• Multinucleate (more than one nucleus)
• Long, cylindrical
Muscle Tissue Types
Skeletal tissue (striated)
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Figure 3.20a
Muscle Tissue Types
Muscle Tissue Types
• Cardiac muscle
– Under involuntary control
– Found only in the heart
– Function is to pump blood
– Characteristics of cardiac muscle cells
• Cells are attached to other cardiac muscle cells at
intercalated disks
• Striated
• One nucleus per cell
Figure 3.20b
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Cardiac
Muscle Tissue Types
• Short, cylindrical cells with single nucleus
• Smooth muscle
– Under involuntary muscle
– Found in walls of hollow organs such as
stomach, uterus, and blood vessels
– Characteristics of smooth muscle cells
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• No visible striations
• One nucleus per cell
• Spindle-shaped cells
Muscle Tissue Types
Smooth muscle
• Looks like flowing river, lots of nuclei
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Figure 3.20c
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Nervous Tissue
Nervous Tissue
• Composed of neurons and nerve support
cells
• Function is to send impulses to other
areas of the body
– Irritability
– Conductivity
Figure 3.21
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Nervous tissue (spinal cord, cs)
Nervous tissue (cerebellum)
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Glandular Epithelium
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Parathyroid
• Gland
– One or more cells responsible for secreting a
particular product
• Two major gland types
– Endocrine gland
• Ductless since secretions diffuse into blood vessels
• All secretions are hormones
– Exocrine gland
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• Secretions empty through ducts to the epithelial surface
• Include sweat and oil glands
Pituitary
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