Lab 7: Tissues & Quiz Prep Flashcards
4 tissue types
- Epithelial
- Connective
- Muscular
- Nervous
Adipocyte
(Adipose Connective Tissue)
Basal body
(Pseudostratified columnar epithelial)
Basal cellular components
- Cell membrane (or plasma membrane)
- Surrounds the cell and separates it from its surroundings
- Nucleus
- Contains the genetic material (DNA)
- Cytoplasm
- Includes everything inside the cell except for the nucleus
- Goblet cell
- Specialized type of columnar epithelial that makes mucus
Basement membrane
(Simple columnar epithelial - ciliated)
Basement membrane
(Simple columnar epithelial - nonciliated)
Basement membrane
(Stratified columnar epithelium)
Capillary
(Adipose Connective Tissue)
Capillary
(Areolar connective tissue)
Capillary
(Transitional epithelium)
Cement line of osteon
(Compact bone)
Central canal of osteon
(Compact bone)
Chondroblast in lacuna
(Elastic cartilage)
Chondrocyte in lacuna
(Hyaline cartilage)
Cilia
(Pseudostratified columnar epithelial)
Cilia on simple columnar epithelia
(Simple columnar epithelial - ciliated)
Collagen fiber
(Fibrocartilage)
Collagen fiber
(Areolar connective tissue)
Collagen fiber
(Dense irregular connective tissue)
Collagen fiber
(Dense regular connective tissue)
Columnar epithelial
(Pseudostratified columnar epithelial)
Columnar epithelial
(Simple columnar epithelial - ciliated)
Columnar epithelial
(Simple columnar epithelial - nonciliated)
Columnar epithelial
(Stratified columnar epithelium)
Connective tissue
- Wide variety of forms in the body including blood, bone, cartilage, and lymph
- Found throughout the body
- Common theme in that they contain cells that are within a matrix
- In most cases the matrix is produced by the cells in the tissue
- Functions
- “Connecting” structures together (ie. ligaments and tendons)
- Transport (blood and lymph), body structure (bone, cartilage), and fat storage (adipose)
Connective Tissue Cells
- Different types of cells, depending on their location and function
- Common cells
- Those of the immune system (macrophages)
- Fibroblasts are a part of many connective tissues and are fairly unspecialized cells.
- Highly specialized
- Specific cells such as osteocytes (in bone), chondrocytes (in cartilage), adipocytes (in adipose), and reticulocytes (in reticular connective tissue)
Cuboidal epithelial cell
(Simple squamous epithelial)
Cuboidal epithelial
(Simple cuboidal epithelial)
Cuboidal epithelial
(Stratified cuboidal epithelium)
Dermis
Dermis
(Stratified squamous epithelium - keratinized)
Dermis components
- Composed of connective tissue and accessory structures of the skin such as the hair and nail follicles, glands, vessels, and receptors
Dome-shaped luminal cells
(Transitional epithelium)
Elastic fiber
(Areolar connective tissue)
Elastic lamellae
(Elastic connective tissue)
Embryonic loose connective tissue
(Simple squamous epithelial)
Endothelium
(Elastic connective tissue)
Epidermis
(Stratified squamous epithelium - keratinized)
Epidermis
Epidermis description
- A stratified squamous epithelium in which the upper layer of cells is keratinized (containing many tough keratin filaments)
Epithelial naming convention
- Named according to how many cell layers are in the epithelium and by the shape of the cells nearest the apical layer
- One layer of cells is called simple, whereas more than one layer is stratified
- Simple
- Squamous: cells that are flat
- Cuboidal: cube-shaped
- Columnar: column-shaped
- Stratified
- For stratified epithelia, the shape is named according to the uppermost (apical) layer
- For example in the stratified squamous epithelium, the top most layer is flattened (squamous), but often the lower layers appear more cuboidal
Epithelial surfaces
- Apical surface: “free” or facing an opening
- Basal surface: anchored to other tissues
Epithelial tissue functions
- Cover the surface of organs
- Line the inside of open cavities
- Form glands that produce secretions
Erythrocyte
(Blood)
Extracellular matrix
(Hyaline cartilage)
Gland types & descriptions
- Sebaceous glands: Sebum on the hair shaft
- Sudoriferous glands: Produce sweat
- Ceruminous glands (skin of the ear canal): Produce a waxy substance called cerumen
Goblet cell
(Pseudostratified columnar epithelial)
Goblet cell
(Simple columnar epithelial - nonciliated)
Ground substance
(Fibrocartilage)
Ground substance
(Areolar connective tissue)
Ground substance
(Dense irregular connective tissue)
Ground substance
(Dense Regular Connective Tissue)
Ground substance
(Reticular connective tissue)