DEH 103: Histology & Embryology
Chapter 2: Structure and Function of Cells, Tissues, and Organs
Chapter 2: Structure and Function of Cells, Tissues, and Organs
Kartei Details
| Karten | 44 |
|---|---|
| Sprache | English |
| Kategorie | Medizin |
| Stufe | Universität |
| Erstellt / Aktualisiert | 01.01.2014 / 01.01.2014 |
| Lizenzierung | Keine Angabe |
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What is the function of epithelial tissue?
- Protection: protects the body from chemical, physical, and microbial injury and heat loss
- Absorption: in the gut absorbs nutrients from food. Lungs absorb O2
- Secretion: glandular tissue secretes important chemicals
What are the 4 types of epithelial tissue what what do they look like?
- Squamous: scale-like or flat. LInes air sacs of the lungs
- Cuboidal: roughly cube shaped. Lines the ovaries, salivary glands. (secretes and absorbs)
- Columnar: tall and narrow. Lines stomach (secrete and absorbs)
- Pseudo-stratified: rod like
The_____ eipthelium is several layers thick (i.e. skin) and the outermost layer will accumulate _____.
- Stratified
- Keratin
Where is keritinized and nonkeratnized epithelium found?
- Keratinized: fibrous waterproof protein found in skin cells
- Nonkeratinized: epithelium in superficial layers of lining mucossa
What are the 4 basic levels of the epithelium?
- Basal layer (stratum basale)
- Spinous layer (stratum spinosum)
- Granular Layer (stratum granulosum)
- Superficial layer (stratum corneum)
The basal layer is the ____ layer composed of a single layer of ____ shaped cells that overline the _____. It is _____ therefore mitosis occurs in this layer.
- Deepest
- Cuboidal cells
- Basement membrane
- germinative
The basal layer is the ____ layer composed of a single layer of ____ shaped cells that overline the _____. It is _____ therefore mitosis occurs in this layer.
- Deepest
- Cuboidal cells
- Basement membrane
- germinative
This is a thin, acellular, ehcmial-based structure always located between any form of epithelium and connective tissue. It is composted of what 2 layers?
- Basement Membrane
- Basal lamina: Produced by epithelum cells (SUPERFICIAL)
- Reticular lamina: produced by connective tissue and is more fibrous (DEEP)
