Tissues Flashcards
Simple Squamous (ET)
Structure: A single layer of flattened cells
Function: Allows for rapid diffusion due to thinness
Location: Gas-exchanging cavity of the lungs
Simple Cuboidal (ET)
Structure: Single layer of cubed cells
Function: Secretion and absorption
Location: Surround tubules in the kidneys
Simple Columnar (ET)
Structure: Single Layer of column cells
Function: Have secretory and absorption function
Location: Lining of ducts in kidneys
Stratified Squamous (ET)
Structure: Multiple layers of flattened cells
Function: Where chemical and mechanical protection is needed
Location: Surface of skin
Stratified Cuboidal (ET)
Structure: Multiple layers of cubed cells
Function: Protection, excretion, and secretion
Location: Found in exocrine ducts
Stratified Columnar (ET)
Structure: Multiple layers of column cells
Function: Protection and mucous secretion
Location: Lining ducts of the pancreas and salivary glands
Areolar (LCT)
Structure: Contains all three types of fibers (collagen, elastic, and reticular), which are distributed randomly and crisscrossed in all directions
Function: Provide support, strength, and elasticity to overlying epithelial tissue
Location: Under the top layer of the skin
Adipose (LCT)
Structure: Mainly composed of round, fat cells called adipocytes
Function: Reservoir for fuel, thermal insulation, and cushioning for organs
Location: Under the skin
Reticular (LCT)
Structure: A branched and mesh-like pattern, due to the arrangement of reticular fibers
Function: Provide Structural Support, a framework for blood-forming cells, immune defenses
Location: Lymph Nodes
Regular (DCT)
Structure: Collagen fibers that are mostly parallel to each other
Function: Transfer forces to the bones
Location: Tendons and ligaments
Irregular (DCT)
Structure: Composed of collagen fibers that go in different directions
Function: Resisting stretching forces
Location: Skin and Joints
Elastic (DCT)
Structure: Made of squiggly elastic fibers that go in the same direction
Function: Resistant to stretch
Location: Found in the airways and large arteries
Hyaline Cartilage
Structure: A pearl-gray semi-translucent matrix
Function: Support flexibility and minimize friction
Location: Ends of long bone and ribs
Elastic Cartilage
Structure: Contains more fibers and many chondroblasts
Function: Support flexibility and minimize friction
Location: External ear and epiglottis
Fibrocartilage
Structure: Contains more collagen fibers than the other types of cartilage and fewer chondroblasts
Function: Stronger than the other types of cartilage
Location: Disc between vertebrae and in the discs of the knee joint
Spongy Bone
Structure: Contains small plates and bars of bone called trabeculae with cavities for bone marrow
Function: Helps to lessen the weight of a bone while still providing strength
Location: At the end of a long bone
Compact Bone
Structure: Has a central canal called the osteonic canal with a ring formation around it called lamellae
Function: Provides protection and strength
Location: Outer layer of bone, particularly around the shaft
Skeletal Muscle
Structure: long, thin cells, have multiple nuclei, striations
Function: Pulls on the bone to make us move
Location: Attached to bones
Cardiac Muscle
Structure: Shorter cells, have noticeable divisions/connections between cells which are called intercalated discs, striated
Function: Generated ATP to continuously make the heart pump
Location: Heart
Smooth Muscle
Structure: Long-thin filaments that are not striated
Function: Help with digestion and nutrient collection
Location: Found in hollow organs ex: blood vessels
Nerve Tissue
Structure: Looks like a star and contains dendrites, cell body, and axon
Function: Convey information by electrical signaling
Location: Brain and spinal cord
Epithelial Tissue
Structure: Squamous, cuboidal, or columnar in shape and may be arranged in single or multiple layers
Functions: Covers the body and lines cavities and glands within the body
Protect the body from physical damage, control what substances enter and leave the body
Provide sensory information
Secrete various substances
Connective Tissue
Function: Giving the body and organs the strength to resist external forces
Protect internal organs
Allows for movement of muscles
Types of fibers in Connective tissues
Collagen fibers- thick strong and resistant to stretch that
Reticular Fibers-thinner and less strong and keep cells in place
Elastic fibers- thinnest can be stretched and can spring back to the place
