Class notes
Bio 03 Tissue Notes
- Course
- BIO 103
- Institution
- Bergen Community College
Tissues - Lecture notes about the tissue in the human body for Bio 103.
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The Tissue Level of Organization Tissues- collections of cells that perform a specific function and work
together to form tissues
- There are 4 types of tissues:
1. Neural tissue
2. Muscle tissue
3. Connective tissue
4. Epithelial tissue
1. Neural Tissue
Neurons are specialized to carry electric impulses
They consist of a nerve cell body, the axon, and the dendrite
2. Muscle Tissue
Muscle cells are specialized to contract and relax using actin and myosin
protein fibers. In hard working cells, there are so many actin and myosin
fibers that they appear as stripes called striations
- Skeletal or striated muscle
- Smooth muscle
- Cardiac muscle
Skeletal Muscle Tissue
- Locations: combined with connective tissues and nervous tissue in
skeletal muscles, organs such as the skeletal muscles of the limbs
- Functions: moves or stabilizes the position of the skeleton; guards
entrances and exits to the digestive, respiratory, and urinary tracts;
generates heat, protects internal organs
Cardiac Muscle Tissue
- Location: heart
- Functions: circulates blood; maintains blood (hydrostatic) pressure
Smooth Muscle Tissue
- Locations: encircles blood vessels; found in the walls of digestive,
respiratory, urinary, and reproductive organs
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