Chapter 9 Flashcards
What is membranous epithelium?
-lines surfaces
What are the functions of the epithelium?
- protection
- sensory
- secretion
- absorption
- excretion
What does avascular mean?
-Without blood
What are the avascular structures discussed in Chapter 9?
- Epithelium
- Cartilage
- Tendons
What is the basement membrane?
-thin, double extracellular layer that serves as a point of attachment and support for overlying epithelial tissue
What is the basement lamina?
- close to and secreted by epithelial cells
- contains glycoproteins, collagen, and proteoglycans
What is the reticular lamina?
- closer to the underlying connective tissue
- contains collagen secreted by connective tissue cells
What are the different kinds of epithelial tissue?
- Membranous: Cutaneous, Serous, and Mucous
- Glandular
Where is cutaneous tissue found?
-the skin
What is the function of cutaneous tissue?
-it protects tissues and organs from the external environment
Where is serous tissue found?
-heart, abdomen, and lungs
What is the function of serous tissue?
-double layer that secretes lubricating liquid to prevent damage from friction
Where is mucous tissue found?
- in areas that open to the outside
- nose, ears, mouth, anus
What is the function of mucous tissue?
-to trap the bad things that come into the body and not allow them to pass any further
Where is glandular tissue found?
- endocrine glands
- exocrine glands
What is the function of glandular tissue?
-to secrete hormones into the blood and outside world
What are endocrine glands?
-glands that secrete hormones into the blood system
What are exocrine glands?
-glands that secrete hormones outside of the body
Where are the endocrine glands found?
ex. hypothalamus, pituitary, thyroid, adrenal, and reproductive glands
Where are the exocrine glands found?
ex. sweat, salivary, mammary, and sebaceous glands
What are the structural classifications of exocrine glands?
- simple or compound
- tubular, acinar, or tubuloacinar
What are the three ways that exocrine glands secrete their product?
- Apocrine
- Holocrine
- Merocrine
What is Apocrine secretion and where is it found?
- the plasma membrane balloons off
- found in mammary glands
What is Holocrine secretion and where is it found?
- the cell ruptures and releases all of its contents
- found in sweat glands
What is Merocrine secretion and where is it found?
- channel proteins allow the product to release
- found in salivary glands
Simple squamous
-good for diffusion
What is the endothelium and where is it found?
- simple squamous epithelium
- lines inside of the heart, blood, and lymph vessels
What is mesothelium and where is it found?
- simple squamous epithelium
- lines serous membranes (pericardium, pleura, and peritoneum)
Simple cuboidal
- good for secretion
- glands