Chapter 4: Tissue Level of Organization Flashcards
What is a group of cells performing similar functions?
Tissues
What is the study of tissues?
Histology
List the four types of tissues in the body and their purpose.
- Epithelial
- covers, lines, glands - Connective
- binds, supports, ECM - Muscle
- movement - Nervous
- communication
In the epithelium, what are the 3 surface layers in order?
Apical, lateral, basal
T/F. The epithelial layer has blood vessels, while the connective tissue does not.
False. The epithelial layer has no blood vessels, while the connective tissue does.
The basement membrane attaches to which tissue?
Connective Tissue
Attachment, Avascularity, and Innervation are all characteristics of which tissue?
Epithelial Tissue
List characteristics of the epithelial tissue.
- physical protection
- selective permeability
- secretions
- sensations
Which two ways is epithelia classified?
- Number of layers
- Shape of cells
How many cell layers are in simple epithelium vs. stratified epithelium?
Simple: single layer
Stratified: 2+ layers
Which epithelium consists of all cells at the basement membrane?
Pseudostratified
What are the 3 epithelial cell shapes and their characteristics?
- Squamous: flat, wide, nucleus flat
- Cuboidal: tall as wide, nucleus center, “cube”
- Columnar: taller than wide, nucleus basal, “column”
Identify the cell structure, function, and location.
Structure: simple squamous
Function: rapid diffusion
Location: alveoli (gas exchange), capillaries, visceral layer
Identify the cell structure, function, and location.
Structure: cuboidal
Function: absorption, secretion
Location: thyroid, kidneys, glands
Identify the cell structure, function, and location.
Structure: nonciliated simple columnar with microvilli
Function: absorption
Location: digestive tract
Identify the cell structure, function, and location.
Structure: ciliated simple columnar
Function: movement of mucus, oocyte
Location: bronchioles, uterine tube
Identify the cell structure, function, and location.
Structure: ciliated pseudostratified columnar
Function: movement
Location: respiratory tract
Identify the cell structure, function, and location.
Structure: nonkeratinized stratified squamous
Function: protect against abrasion
Location: inside the body
Identify the cell structure, function, and location.
Structure: keratinized stratified squamous
Function: protection against abrasion
Location: outside of the body
Identify the cell structure, function, and location.
Structure: stratified cuboidal
Location: absorption, secretion
Function: sweat glands
Identify the cell structure, function, and location.
Structure: stratified columnar
Function: secretion
Location: salivary glands, part of male urethra
Identify the cell structure, function, and location.
Structure: transitional (relaxed= cuboidal, stretched= squamous)
Function: distention
Location: ureters, bladder, part of male urethra