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60 Cards in this Set

  • Front
  • Back
Epithelial Tissue Functions
Protection
Secretion
Absorption
Excretion
Single layer of flat cells
Substances pass through easily
Line air sacs
line blood vessels
line lymphatic vessels
Simple Squamous
Single layer of cube-shaped cells
Line kidney tubules
Cover ovaries
Line ducts of some glands
Simple Cuboidal
Single layer of elongated cells
Nuclei usually near basement membrane (and at the same level)
Sometimes possess microvilli
Often have goblet cells
Line uterus, stomach, intestines
Simple Columnar
Single layer of elongated cells
Nuclei at two or more levels
OFten have cilia
Often have goblet cells
Line respiratory passages
Pseudostratified Columnar
Many cell layers
Top cells are flat
Can accumulate keratin
Outer layer of skin
Line oral cavity, vagina, anal canal
Stratified Squamous
2-3 layers
Cube-shaped cells
Line ducts of mammary glands, sweat glands, salivary glands, pancreas
Stratified Cuboidal
Top layer of elongated cells
Cube-shaped cells in deeper layers
Line part of male urethra and part of pharynx
Stratified Columnar
Many cell layers
Cube-shaped and elongated cells
Line urinary bladder, ureters, and part of urethra
Transitional
Cells that are specialized to produce and secrete substances
Glandular Epithelium
Glandular Epithelium (Ductless)

Glands that secrete their products into tissue fluid or blood are called?
Endocrine
Glandular Epithelium (Have Ducts)

Glands that secrete their products into ducts that open into surfaces, such as the skin or the lining of the digestive tract?
Exocrine
Four Major Tissue Types
epithelial, connective, muscle, and nervous
Tissues that cover the body surface and organs, forms the inner lining of body cavities, and lines hollow organs.

Lacks blood vessels

Protection, secretion, absorption, excretion
Epithelial Tissues
Single epithelial cell, such as a mucous-secreting goblet cell
Unicellular Exocrine Gland
Composed of many cells and can be structurally subdivided into two groups (simple and compound)

Sweat glands, salivary glands
Multicellular Exocrine Glands
Glands that release fluid products by exocytosis

Fluid product
Merocrine
Glands that lose small portions of their glandular cell bodies during secretion are called...

Cellular product
Apocrine
Glands that release entire cells are called...

secretory product
Holocrine Secretion
Compound alveolar gland that produces milk

Apocrine Gland

Secretory portions are irregularly branched tubules with numberous saclike outgrowths
mammary glands
Simple branched alveolar gland that excretes oil

Holocrine Gland

secratory portions of gland expand into saclike compartments along duct
Sebaceous gland of the skin
Simple coiled tubular gland (Eccrine)

Merocrine gland

Long, Coiled, tubelike gland, long duct
Sweat glands of the skin
comprise much of the body and are the most abundant type of tissue by weight.

Bind structures, provide support and protection, serve as frameworks, fill spaces, store fat, produce blood cells, protect against infections, and help repair tissue damage.

Have a matrix

Have varying degrees of vascularity,

Have cells that usually divide
Connective tissue.
Composed of protein fibers and a ground substance consisting of nonfibrous protein and other molecules and fluid.

medium through which substances can be transferred between blood and cells of the tissue
Extracellular matrix
Most common type of fixed cell in connective tissues. Large, star shaped cells produce fibers by secreting proteins into the extracellular matrix f connective tissues.
Fibroblasts
Originate as white blood cells and are almost as numerous as fibroblasts in some connective tissues. Usually attached to fibers but can detach and actively move about.

Scavenger cells, can clear foreign particles from tissues
Macrophages
Large and widely distributed in connective tissues, where they are usually near blood vessels. They release heparin, a compound that prevents blood clotting.

Release histamine, which is a substance that promotes some of the reactions associated with inflammation and allergies.
Mast cells
Three types of Connective Tissue Fiber
Collagenous fibers
Reticular Fibers
Elastic Fibers
Thick threads of the protein collagen, the major structural protein of the body. Grouped in long , parallel bundles, and they are flexible but only slightly elastic.

Have great tensile strength--they can resist considerable pulling force.
Collagenous Fibers
Collagenous fibers that hold bones to bones.
Ligaments
Collagenous fibers that connect muscle to bones.
Tendons
Two major categories of connective tissues
Loose and dense
Loose connective tissues
areolar, adipose, reticular
Dense connective tissue
dense regular, dense irregular, elastic
Forms delicate, thin membranes, throughout the body. The cells of this tissues mainly fibroblasts, are located some distance apart and are separated by a gel-like substance that contains many collagenous and elastic fibers that Fibroblasts serete.

Located in subcutaneous layer beneath the skin and surrounding organs.
Areolar Connective Tissue
fat, develops when certain cells store fat in droplets in their cytoplasm.

Cushions, insulates, store fats, beneath skin, behind eyeballs, around kidneys and heart
Adipose Tissue
Mainly fibroblasts, fluid to gel like matrix, collagenous fibers, elastic fibers, bind skin to structures, beneath most epithelia, blood vessels nourish nearby epithelial cells, between muscles
Loose connective tissue
Very thin collagenous fibers
Highly branched
Form supportive networks (i.e. spleen)
Reticular Fibers
Bundles of microfibrils embedded in elastin
Fibers branch (complex networks)
Elastic (easily stretched)
Vocal cords, air passages
Elastic Fibers
Specialized Connective Tissues
Cartilage
Blood
Bone
Consists of many closely packed, thick, collagenous fibers; a fine network of elastic fibers; and a few cells, mostly fibroblasts.

Bind body parts together, tendons, ligaments, dermis, poor blood supply
Dense Regular connective tissue
Thicker, interwoven, and more randomly organized.
Dense irregular connective tissue.
Consists of yellow, elastic fibers in parallel strands or in branching networks

Attachments between bones, walls of large arteries, airways, heart
Elastic Connective Tissue
Rigid connective tissue. Provides support, frameworks, and attachments; protects underlying tissues and forms structural models for many developing bones.

Poor blood supply
Cartilage
The most common type of cartilage, has very fine collagenous fibers in its extracellular matrix and looks somewhat like light glass.

Ends of bones, nose, respiratory passages.
Embryonic skeleton.
Hyaline Cartilage
Is more flexible than hyaline cartilage because its extracellular matrix has a dense network of elastic fibers.

Ear, larynx.
Elastic Cartilage
Is a very tough tissue, has many collagenous fibers. It is a shock absorber fr structures subjected to pressure.

Forms pads between the individual bones of the spinal column (intervertebral discs)
Fibrocartilage
The most rigid connective tissue. Hardness due to salts, such as calcium phosphate and calcium carbonate, between cells.
Bone
Type of connective tissue, is composed of cells suspended in a fluid extracellular matrix called plasma.
Blood
Cells included in Blood connective tissue.
white blood cells, platelets, red blood cells
Four types of membranes
Epithelial membranes
Serous membranes
Mucous membranes
Cutaneous membrane
Thin structures that are usually composed of epithelium and underlying connective tissue.

Cover body surfaces and line body cavities.
Epithelial membranes.
Line the body cavities that do not open to the outside and reduce friction between the organs and cavity walls.

Cover organs of thorax and abdomen, secrete fluid
Serous membranes
Line the cavities and tubes that open to the outside of the body.

Oral and nasal cavities and the tubes of the digestive, respiratory, urinary, and reproductive systems.
Mucous Membranes
Part of the integumentary system, more commonly called the skin.
Cutaneous membrane.
Contractile, can shorten and thicken. three types skeletal, smooth, cardiac
Muscle tissue
Forms muscles that usually attach to bones and can be controlled by conscious effort. For this reason, it is often called voluntary muscle tissue. Striated.
Skeletal Muscle
Cells lack striations, shorter than those of skeletal muscle and are spindle-shaped, each with a single, centrally located nucleus.

Walls of organs, skin, walls of blood vessels, involuntary, not striated.
Smooth muscle
Is only in the heart. Its cells, striated and branched, are joined end-to-end, and interconnected in complex networks.

Involuntary, intercalated discs.
Cardiac muscle.
Found in the brain, spinal chord, and peripheral nerves. Basic cells are called neurons. Neuroglial cells support and bind nervous tissue components. Sensory perception, conduction of nerve impulses.
Nervous Tissues