Human Body Science Flashcards
What two functions serves epithelial tissue?
- Provide covering such as skin tissue 2. produce secretions such as glandular tissue
What commonly exists in sheets and does not have a blood supply and depends on nearby capillaries for food and oxygen?
Epithelial tissue
What two criteria are epithelial tissue classified into?
- Number of cells 2. Cell shape
Simple epithelial
contains one layer of cells found in body structures where absorption, secretion, and filtration occur
stratified epithelial
Has more than one layer of cells and serves as protection
Shapes of epithelial
-cuboidal cells are cube‐ or hexagon‐shaped with a central, round nucleus. These cells produce secretions (sweat, for example) or absorb substances such as digested food. -Squamous cells are flat. The nucleus, located near the upper surface, gives these cells the appearance of a fried egg. -Columnar cells are tall with an oval nucleus near the basement membrane. These thick cells serve to protect underlying tissues or may function to absorb substances. Some have microvilli, minute surface extensions, to increase surface area for absorbing substances, while others may have cilia that help move substances over their surface (such as mucus through the respiratory tract). -Transitional cells range from flat to tall cells that can extend or compress in response to body movement.
Tissue that’s found throughout the body that serves to connect different structures of the body and has its own blood supply exceptions of a few types
connective tissue
Mention few examples of connective tissues
bone, cartilage, adipose(fat), and blood vessels
Pseudostratified epithelium
describes a single layer of cells of different sizes, giving the appearance of being multilayere
Tissue that produces movements
muscle tissue
What are the 3 types of muscle tissue?
- skeletal 2. cardiac 3. smooth
Anatomical position