Epithelial and Connective Tissue Flashcards
What is not a tissue, but is often associated with them?
Membranes
What does avascular mean?
Having no blood supply.
Name the functions of epithelial tissue
Protection, filtration, nutrient absorption, sensory input, and secretions/excretions.
What tissue is known for having no intercellular space?
Epithelial
T/F Epithelial tissue is avascular, but not innervated.
False. Epithelial tissue is innervated
Does epithelial tissue have the capacity to regenerate?
Yes
What is this?
Simple squamous epithelium
Name the epithelia.
Stratified squamous. (GEORGE)
Name the epithelia.
Simple cuboidal. (MARTHA)
Meme break
You got this!!
Name the epithelia
stratified cuboidal (BOB)
Name the epithelia
Simple columnar (CAROL)
Name the epithelia
Stratified columnar (JIM)
Name the epithelia
Pseudostratified (Alex)
What is the function of simple squamous epithelia?
They provide a barrier that fluids and gasses can be exchanged through, and produces serous fluid.
Where can you find simple squamous epithelia?
The air sacs of the lungs, inner lining of ventral body cavities and blood vessels, and certain parts of the kidney
What epithelia is found in kidney tubules, lower respiratory passages, and many endocrine glands? (Functions include absorption and secretion)
Simple cuboidal epithelia
Where are simple columnar epithelia found and what is their function?
Found in digestive tract, uterine tube, gallbladder and certain kidney tubules. They absorb and secrete while also propelling the egg through the uterine tube
What epithelium is found in places that need to stretch (ex. bladder) and what does it do?
transitional epithelium
Study through it!!
What epithelium is found in the nasal cavity, male urethra, and upper respiratory passages, while secreting mucous and propelling it with ciliary motion? (Goblet cells)
Pseudostratified epithelia
What is the difference between keratinized stratified squamous epithelia and non-keratinized?
Keratinized epithelia has dead cells at the apical layer, and prevents water loss through skin.
Where is keratinized squamous epithelium found? Non-keratinized?
Keratinized is found in the skin (epidermis) and non-keratinized is found on the mouth, vagina, and anal canal.
How do stratified squamous cells move upward?
Cuboidal or columnar cells at the bottom are pushed upward due to polarity and mitosis. As they move toward the apical layer, they lose cytoplasm and become squamous.
Where are stratified cuboidal epithelia found?
The ducts of the salivary, mammary, and sweat glands
What epithelia functions as protection while also secreting and absorbing substances?
Stratified columnar epithelia
Endocrine glands produce_______, which are regulatory hormones released directly into the extracellular space.
Hormones
Give an example of an endocrine gland.
Thyroid, pituitary, adrenal, ovary, parathyroid, testicle
What are the different types of exocrine glands?
Unicellular and multicellular
Me after failing even after making this long ass review
What do unicellular exocrine glands do?
Secrete mucin using goblet cells
Multicellular glands are ________ in __________.
covered; epithelium
What are the major classes of connective tissue?
Connective tissue proper, cartilage, osseus (bone), and blood
What makes connective tissue?
Extracellular matrix, vascularity (blood supply), structural elements (ground substance, extracellular fibers, and cells)
What is the difference between the extracellular matrix and ground substance?
The extracellular matrix is found between cells and delivers nutrients, while ground substance is like a highway for cells to communicate and exchange waste and nutrients.
I hate studying
What fibers are found in tendons and ligaments and is resistant to pulling forces? (Looks like a handful of uncooked spaghetti)
Collagen Fibers
What fibers are found in vocal cords, lungs, skin and blood vessels, lack tensile strength but can stretch and contract. (Coiled)
Elastic fibers (made of elastin)
What fibers are composed of collagen and glycoprotein, and provide support around complex organs?
Reticular fibers
What is a mesenchymal stem cell?
A cell that can transform into whatever cell is needed. Ex. chondroblast, osteoblast, tenoblast, or irregular connective tissue cell
T/F Tendons hold bone to bone and limit movement
False; Tendons hold muscle to bone and enhance movement, while ligaments hold bone to bone and limit movement.
Name the classes of cartilage
hyaline (articular), fibrocartilage (knee, pelvis, between vertebrae), and elastic (ears and epiglottis)
Horse break
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