Chapter 4 Flashcards
Where is the endothelium?
- Lining of the lymphatic /blood vessels, and heart
Where is the nervous tissue found?
- Brain
- spinal cord
- nerves
Stratified cuboidal epithelium - location and function,
- Two cell layers thick
- protection
- sweat and mammary glands
What is the function of the nervous tissue?
Controls ; internal communication
Where is the mesothelium?
- epithelium of serous membrane in the ventral body cavity
Bottom of a surface is?
Basal
Simple squamous epithelium - location and function
- Single layer of cells
- Kidney and lungs
- Endothelium
- Mesothelium
- materials pass by diffusion and filtration in sites; secretes lubricating substances in serosse
What are the two names epithelial tissue have?
- Simple
- Stratified
Where are connective tissues found?
- Bones
- tendons
- fat
-Blood
Flattened and scalelike?
Squamous cells
Where are the two types of epithelial tissues?
- cover and lining of epithelia
•respiratory, digestive, and urogenital tract - glandular epithelia
• glands (endocrine)
Stratified columnar epithelium- location and function
- Only apical layer columnar
- Protection
- pharynx, male urethra, and lining some glandular ducts
Where is the muscle tissue found?
- Attached to bones (skeletal)
- heart (cardiac)
- walls of hollow organs (smooth)
Where are epithelial tissues found?
-Lining of digestive tract organs
- epidermis
What is the most common epithelium?
Stratified squamous epithelium
Stratified squamous epithelial – location and function
- Two or more cell layers
- Protects from wear and tear
- Epidermis and esophagus
Pseudostratified columnar epithelium - location and function
- Cells vary in height ; appears stratified but is not
- secretes mucus and absorbs
- trachea
Simple columnar epithelium- location and function
- Single layer of tall, close packed cells
- secrete and absorb
- digestive tract
What is the function of Epithelial tissue?
Covers, protects, secretes, absorbs, filters, excretion, and sensory reception
Top of a surface is?
Apical
What is the function of Connective tissue?
Supports, protects, insulates, stores reserve fuel, transports substances and binds other tissues together
Tall and column shaped ; nucleus elongated
Columnar cell
What are the 5 characteristics of Epithelial Tissues?
- Polarity
- Specialized contacts
- Supported by connective tissues
- Avascular but innervated
- Can regenerate rapidly
What are the shapes of epithelial tissues?
- Squamous
-Cuboidal - Columnar
Boxlike and nucleus round?
Cuboidal cell
Muscle tissue
Produces movement
Simple cuboidal epithelium - location and function
- Single layer of cells
- secrete and absorb
- kidney tubules
Transitional epithelium - location and function
- Apical/basal layered cells
- Stretch
- Lining of in urinary organs
What is a gland?
One or more cells that make and secrete a particular product.
What is secretion?
Aqueous fluid that includes protein
What kind of glands internally secrete?
Endocrine glands
Where do endocrine gland secrete their hormones?
Lymph or blood to specific organs.
What kind of glands externally secrete?
Exocrine glands
Where are exocrine glands secretions released?
Onto body surfaces or into body cavities ;
into ducts
Ex. Mucous, sweat, oil, and salivary glands
What are the 4 main classes of connective tissues?
- Connective tissue proper
- Cartilage
- Bone
- Blood
What are the 3 characteristics of connective tissue?
- Have mesenchyme
- Varying degrees of vascularity
- Have extracellular matrix
Mesenchyme is?
Embryonic tissue
Extracellular matrix is?
- Separates cells
- Nonliving
What are the 3 elements all connective tissue must have?
- Ground substance
- Fibers
- Cells
What is ground substance?
Fills the space between the cells and contains fibers
What is considered the connective tissue glue?
Cell Adhesion Proteins
What are the 3 Connective tissue fibers?
- Collagen
- Elastic fibers
- Reticular
Collagen
- Strongest and most abundant
- Tough ; provides high tensile strength
Elastic fibers
- Elastin: allow for stretch/recoil
- Long and thin
Reticular fibers
- short, fine, highly branched collagenous fibers
What cells are specific to connective tissue proper?
- Fibroblast
What cells are specific to cartilage?
- Chondroblasts
- Chondrocytes
What cells are specific to bones?
- Osteoblast
2.Osteocytes
What connective tissue cell stores nutrients?
Fat cells
What connective tissue cell responds to injury?
White blood cells
3 examples of WBC
- Neutrophils
- Eosinophils
- Lymphocytes
What connective tissue cell initiates local inflammatory responses?
Mast cells
What do mast cells secrete?
Histamine
What connective tissue cell is considered phagocytic and eats dead cells?
Macrophages
What are 2 characteristics of cartilage?
- Lacks nerve fibers
- Avascular
What are the 3 types of cartilage
- Hyaline
- Elastic
- Fibrocartilage
* different fibers in each cartilage
Hyaline cartilage - location an function
- Support and reinforces
- costal cartilage of the ribs
Elastic cartilage- location and function
- Maintains the shape of structure/flexibility
- ear/epiglottis
Fibrocartilage- location and function
-Tensile strength
- intervertebral discs
What is another name for bone?
Osseous tissue
Bone ( osseous tissue) - location and function
- Supports and protects body structures
- stores fat and synthesizes blood cells in cavities
- bones
Blood - location and function
- Transport respiratory gases nutrients, wastes, and other substances
- Located within blood vessels
How is blood a connective tissue?
Arrives from mesenchymal tissue and has a nonliving fluid matrix
What are the 2 characteristics of Muscle tissue?
- Highly vascularized
- Responsible for most type of movement
What are the 3 muscle tissues?
- Skeletal
- Cardiac
- Smooth
What is unique about skeletal muscle? How does it look?
Voluntary
Long, cylindrical multinucleate cells
What is unique about cardiac muscle? How does it look?
Involuntary
Branched, striated, uninucleate cells
What is unique about smooth muscle tissue? How does it look?
Involuntary
Spindle shaped cells with central nuclei, no striations
What is the nervous system composed of?
- Neurons
- Neurolgia
What do neurons do?
Generate and conduct nerve impulses
* apart of neuron cell (long axon)
What do neurolgia do?
Support, insulate, and protect neurons
Which tissue regenerates extremely well?
Epithelial tissues
Which tissue regenerates at moderate capacity?
Smooth muscle
Which tissue has virtually no regenerative capacity?
nervous tissue