tissue Flashcards
(31 cards)
What are the 4 (5) tissue types
- Epithelial tissue
- Nervous tissue
- Connective tissue (blood tissue may also belong in this category)
- Muscle (contractile tissue)
What does nervous tissue consist of
2
- nerve cells/neurons
- neurological cells
What neurological cells belong in the CNS
4
- astrocytes
- oligodenrocytes
- microglial cells
- ependymal cells
What neuological cells belong to the PNS
2
- satellite cells
- Schwann cells
What is the function of a neuron
- to receive and faciliate nerve impulses
what are neurological cells
- supporting cells (facilitate conduction of nerve impulse, immune function and maintenance of neurones)
Whate are the 5 different types of connective tissue
- loose fibrous connective tissue
- dense fibrous connective tissue
- hyaline cartilage
- bone tissue
- adipose tissue
what are the key functions of connective tissue
4
- support
- movement
- protection
- fat (energy) store
What are the histological qualities of LCT
3
- contains fewer fibres (still collagen and elastin)
- more cells and ground substance
- less rigid and more easily distorted but can still provide resitance when stretched to create a tough barrier (thx to collagen)
what is the structure of LCT
cells found within a network of mostly collagen fibres
what is the function of LCT
4
- loose packing
- support
- nourishment to associated structures
- tissue sliding
What are the characteristics of DCT
4
- highter proportion of fibres compared to LCT
- fewer cells
- less ground substance in the extracellular matrix
- can be divided into regular and irregular CT depending on the alignment of fibres
Where can you typically find DCT
4
- tendons
- ligaments
- cornea of the eye
- arteries
what is the structure of DCT
matrix composed of collagen and elastin fibres
what is the function of DCT
tensile strength and stretch resistance
What are the 3 types of cartilaginous tissue
- hyaline
- fibrocratilage
- elastic cartilage
What are the key characterisitcs of cartilaginous tissue
4
- cells are called chondrocytes
- produce a matrix made up of type 2 collagen, glycoproteins and water
- does not contain calcium phosphate (therefore flexible)
- continually broken down and renewed throughout life
what is the structure of cartilage
varies depending on type
what is the function of cartilage
provide flexibility with rigidity.
fibrocartilage can withstand a lot of pressure
What are the 2 types of bone tissue
- lamellar (compact)
- trabecular (spongy)
what are the characterisitcs of bone tissue
2
- constantly remodelled throughout life
- hard due to calcium phosphate in the extracellular matrix
what is the structure of bone tissue
3
- collagen network (tensile strength)
- crystalline (compressive strength)
- bone cells (maintenance of bone)
what is the functions of bone tissue
to provide strength and support
What are the cells that produce/maintain bone tissue
3
osteoblasts
osteocytes
osteoclasts
