Tissues Flashcards
4 types of tissues
Nervous, Muscle, Epithelial and Connective
What does nervous tissue do?
Internal communication
Where is nervous tissue found?
Brain, Spinal cord and nerves
What does muscle tissue do?
Contracts to cause movement
What is skeletal muscle?
Muscle attached to bones
What is cardiac muscle?
Muscle of the heart
What is smooth muscle?
Muscle of walls of hollow organs
What is epithelial tissue?
Forms boundaries between different environments, protects, secretes, absorbs, filters
Where is epithelial tissue found?
- Lining of the GI tract organs and other hollow organs
- skin surface (epidermis)
What does connective tissue do?
Supports, protects, binds other tissues together
Where is connective tissue found?
Bones, tendons, fat and other soft padding tissue
What is epithelium supported by?
Underlying connective tissue (forming basement membrane)
What are the 3 distinct surfaces of epithelial cells?
Basal (surface that attaches to underlying epithelial cells or connective tissue), apical (cell surface that faces the opposite direction of the basal surface, or which is the exposed surface of the cell) and lateral (surface which contact cells to either side)
What is avascular?
Without blood supply. Epithelial cells exchange nutrients, gases, wastes, etc. with blood in the underlying connective tissue via diffusion.
Epithelial cells are innervated. What is innervated?
Having a nerve supply
Epithelium has high capacity for regeneration. What is regeneration?
New tissue growth via mitosis
