Tissues Part 3 - Connective, Muscle and Nervous Flashcards
Main role of connective tissue?
Supports body structures; typically anchors epithelial tissue to itself
What are the four types of connective tissue?
Connective Tissue Proper, Cartilage, Bone, Blood
What cell do the four types of connective tissue arise from?
Mesenchyme Cell
Functions of connective tissue include?
Binding and support, protecting, insulating, storing reserve fuel (i.e. calcium in the bones), Transporting substances
What are most connective tissue made of?
Ground substances + fibres
What is ground substance? What role does it play in connective tissue?
Background material between cell and fibre; fluid - helps bind structures together
What are the fibres in connective tissue? What purpose do they have?
Reticular, Collagen and Elastic fibres and they all have a role of providing strength to the tissue.
In order of strength from least to greatest, list the fibres
Elastic, Reticular and Collagen
Why is extracellular matrix so important in connective tissue?
Connective tissue is the only tissue mainly composed of extracellular matrix (non-living cells); ground substance + fibres make extracellular matrix
If ground substance and fibres make the non-living cells what do the rest of the components make?
Made up of living cells - i.e. mast cells, eosinophils, neutrophils, adipocytes, macrophages, fibroblasts, and plasma cells
What is the function of connective proper tissue?
Binding (epithelial to connective), resists tensions/mechanical stress (i.e. in ligaments), fat storage, provides reservoir for water and salts
What is the most common fibre in connective tissue?
Collagen fibre
How many types of connective tissue fibres are there?
6 different types (vary in density and fibre type)
Where can connective tissue proper be found?
Adipose, Under (supporting) epithelia, Ligaments (connect bones)
What are the main functions of connective tissue in cartilage?
Resists compression, cushions and supports body structures
Why is there cartilage between two bones
To keep the bones from rubbing against each other; lubricating them
Purpose of high amounts of water in the cartilage?
Resisting compression while acting as a lubricant for the cartilage surrounding it; helps cartilage keep sponginess
What are the three types of connective tissue: cartilage?
Hyaline, Elastic, Fibrocartilage
How do the types of connective tissue: cartilage vary from one another?
Diff. levels of strength and elasticity
Which connective tissue cartilage is most common in the body? An example of where you might find this type of cartilage?
Hyaline is the most common; found in ligaments
What is elastic cartilage?
More elastic properties; allow for movement of the body parts that need to bend
What is fibrocartilage?
Toughest cartilage made of strong fibres; found in some joints and allows for more mobility than hyaline
What is connective tissue bone used for?
Form connective bases of the body
Functions of connective tissue bone?
Resist compression and tension & acts as support for the body
Example of how bone resists tension
When muscles contract they pull on the bone and the bone resists a lot of that tension
What are the tissues bone classified into?
Compact bone and spongy bone
What are the functions of connective tissue blood?
Fluid tissue & transporting (O2, CO2, nutrients, wastes, hormones)
Features of muscle include?
High cell concentration, Highly vascularized (lots of blood vessels), responsible for body movement
How many types of muscles are there and what are they?
Three types; cardiac, skeletal and smooth
Feature of skeletal muscle that smooth and cardiac do not possess?
Skeletal muscles move voluntarily
Where would you find smooth muscle?
Covering organs and blood vessels
What comprises the Nervous system?
Brain, Spinal Cord, Nerves
What are the two cell types of nervous tissue?
Neurons & Supporting Cells
