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Types of Tissues - Coggle Diagram
Types of Tissues
Epithelial
Tissue
Simple
Squamous
Description:
- shape? flat
- layer arrangement? single layer
- thickness? one layer
- cilia or villi? villi
- position of nucleus? centrally located, flattened nucleus that is oval / round in shape
Location:
- air sac of lungs
- Bowman’s capsule of the kidneys
Function:
- “allows oxygen from the air to enter the blood in the capillaries of the lung”
- “enable rapid filtration of the blood and diffusion of small molecules”
- Overall Function: filtration (blood), diffusion (air), and secretion (serous fluid)
- Relative Strength: found in areas where wear and tear is common
-
Stratified
Squamous
Description:
- shape? flattened cells
- layer arrangement? many layers
- thickness? 2 or more layers
- cilia or villi?
- position of nucleus? upper squamous cells
Location:
- lining of the mouth
- part of the pharynx
Function:
- “absorbing and secreting substances as well as is creating a barrier between substances flowing though the cavity space and underlying tissues”
- “tightly bunched cells also protect you by ensuring that foreign substances don’t enter your bloodstream”
- Overall Function: protection (depending on location - UV, abrasion, foreign invasion)
- Relative Strength: Keratinized is found in the skin - keratin protein help make the skin waterproof and more tough
Non-keratinized is found in certain mucous membranes that are subject to more wear and tear
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Transitional
Description:
- shape? cells can change shape
- layer arrangement? multi-layered
- thickness? about 6 layers
- cilia or villi?
- position of nucleus? centrally located
Location:
- lining the urinary bladder
- lining the ureters
Function:
- “protect the urinary tract from the damaging effects of urine”
- stretch in order to accommodate the “pulling of the urinary system”
- Overall Function: repeated stretching without rupturing
- Relative Strength : repeated stretching without rupturing
-
Pseudostratified
Columnar
Description:
- shape? column-shaped cells
- layer arrangement? looks like there are many layers however there is really only one layer
- thickness? thick cells
- cilia or villi? non-ciliated and ciliated
- position of nucleus? “varying heights within the cell”
Location:
- lines the airways of most upper respiratory tract
- reproductive system
Function:
- move “unwanted substances up and out of your respiratory tract before they can cause problems”
- “lines the...tube that carries sperm cells away from the testes toward the urethra, and it makes up part of the endometrium”
- Overall Function: Ciliated - secrete mucus and propel mucus out of respiratory tract. Non-ciliated - absorption and secretion
- Relative Strength: “thick cells... useful in the process of absorbing and secreting substances as well as in creating a barrier between substances flowing though the cavity space and underlying tissues”
-
Connective
Tissue
Dense
Irregular
Description:
- types of protein fibers? collagen fibers
- cell shape/ arrangement? irregular careless fashion making no specific or consistent pattern
- matrix composition? the matrix is made of fibroblasts which generate fibers
Location:
- dermis of skin
- fibrous pericardium
Function:
- very strong tissue when pulling force is applied multiple directions due to irregular arrangement of collagen fibers
- Relative Strength: require tensile strength in multiple planes
-
Catilage
Hyaline
Description:
- types of protein fibers? collagen fibers
- cell shape/ arrangement? contains mostly chondrocytes scattered in ground substance with few visible protein fibers giving a smooth, glassy appearance
- matrix composition? “chondrocytes embedded in an intracellular matrix”
Location:
- tracheal rings
- larynx
Function:
- protection, flexibility. Supports and reinforces resilient cushion, revisits compressive stress
- Relative Strength: ideal tissue to cover the ends of bones where they form joints with another bone
-
Elastic
Description:
- types of protein fibers? elastic fibers
- cell shape/ arrangement? arranged arranged in parallel bundles
- matrix composition?
filled with elastic fibers that allow it to stretch and recoil
Function:
- strength, flexibility. Maintains the shape of a structure while allowing great flexibility
- Relative Strength: fibers allow the cartilage to stretch and recoil
-
Loose
Areolar
Description:
- types of protein fibers? elastic, collagen, and reticular
- cell shape/ arrangement? ground substance - gives off a ”loose appearance - - found as part of the basement membrane and in the walls of hollow organs”
- matrix composition? collagen, elastic and reticular fibers in the matrix
Location:
- part of basement membrane that epithelial tissue attaches to and walls of hollow organs where you ding mucous membranes
- found around. blood vessels and nerves
Function:
- functions as the “glue” that epithelial cells attach to - provides strength, elasticity, and support
- strength, support, and elasticity
- Relative Strength: “glue” that epithelial cells attach to
-
Adipose
Description:
- types of protein fibers? collagen, elastic, and reticular
- cell shape/ arrangement? huge cells called adipocytes - each adipocyte contains a large lipid droplet that occupies most of its cytoplasm - the nucleus and other organelles are barely visible because they are pushed to the periphery of the cell against the plasma membrane
- matrix composition? collagen fibers in the extracellular matrix
Location:
- yellow bone marrow
- padding around joints.
Function:
- In addition to support for organs, adipose tissue insulates and is an energy reserve
- Relative Strength: distributed widely throughout the body under the skin and around organs
-
Muscle Tissue
Cardiac
Description:
- voluntary or involuntary? involuntary
- striated or non-striated? striated
- intercalated discs or do not contain intercalated discs? contain intercalated discs
Function:
- “works to keep your heart pumping through involuntary movements”
-
Smooth
Description:
- voluntary or involuntary? involuntary
- striated or non-striated? lack noticeable striations
- intercalated discs or do not contain intercalated discs? do NOT contain intercalated discs
Location:
- GI tract - stomach
- GI tract - esophagus
Function:
- aids in mechanical digestion
- propels food forward
-
Nervous
Tissue
Neuron
Neuroglia
Description:
- neuroglia cells vary significantly in shape and appearance
Function:
- supportive cells; do NOT conduct impulses
-
Neurons
Description:
- responsible for sending and receiving messages within the nervous system. The large, central portion of the neuron is called the cell body along with clusters of rough endoplasmic reticulum called Nissl bodies. Dendrites receive messages from other neurons and the axon sends messages to other neurons, muscle cells, or gland cell.
Function:
- conduct nervous system impulses
-
Sensory Neurons
Description:
- “carry signals from receptors to the spinal cord and brain”
Location:
- axon: short and toward the right hand side
- cell body: towards the middle
- dendrite: one long dendrite
Function:
- “carry information from sense organs to the central system”
-
Motor Neurons
Description:
- “carry signals from the central nervous system to effector organs”
Location:
- axon: long and in between the cell body and dendrites
- cell body: left hand side
- dendrite: many short dendrites
Function:
- “neurons that carry information from the central nervous system to the muscle cells”
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