-Epithelial layer of the skin

-Covers the entire body

-Protects 

1. epithelial layer - lines the digestive tract and absorbs nutrients

2. skin - protects 

3. glands - secrete hormones

4. sensory receptors (nose and taste buds) receive info from environment

systems working together to regulate. 

ex) nervous, cardiovas and endocrine work together to regulate body temperature

-single layer

-used for diffusion 

ex) air sacs of lungs 

-two or more layers

-for protection 

-outer layer of skin

-lining of blood and lymph vessels 

-have diff. embryonic origin from "true" ephithelium 

-but structurally similar

-one or more epithelial cells that secrete

ex) sweat, milk 

- goblet, sweat and salivary

-secrete products onto free epithelial surface through a duct (tube) 

ex) goblet cells and sweat glands and parotid salivary gland

- lacks ducts 

-release hormones into intersititual fluid or blood 

epithelial tissue + underlying connective tissue

ex) mucous membrane and serous membrane

lines body cavity that opens to outside of body 

ex) digestive or respiratory 

-lines a body cavity that does not open to the outside of the body

-secretes fluid into the cavity it lines 

-simple squamous epithelium + thin layer of loose connective tissue

Covers the whole surface of the body; inside and outside. Sheets of tightly packed cells that line organs and body cavities; the layers or cells separates organism from environment (ex esphagous, stomach etc lined with epilthelim, ‘for something to get into body, it must cross epithelium’.)

*Function: protection, absorption and secretion

*Classifications: (squamous, cuboidal, columnar)- refers to shape

(simple, stratified, pseudostratified, transitional)- refers to layers

The cubic shape of a type of epithelial cell.

The column shape of a type of epithelial cell.

The flat, tile-like shape of a type of epithelial cell.

commonly active in secretion and absorption. Found in glands and kidney tubules.

Simple columnar epithelium

specialized for secretion and absoprtion, consists of a single layer of tall columnar cells that often exhibit microvilli and globlet cells. Lines most of the digestive tract.

is found chiefly in the ducts of large glands.

is rare in the body; commonly appears  at junctions between other epithelial types.

is a simple columnar epithelium that appears stratified.  Its ciliated variety, rich in goblet cells, lines most of the upper respiratory passages.

is a modified stratified squamous epithelium.  Adapted for responding to stretch; lines hollow urinary system organs.

Animal tissue that functions mainly to bind and support other tissues, having a sparse population of cells scattered through an extracellular matrix. Derived from the mesoderm (or mesenchyme)

*function: support, protection, binding, insulation, and transportation (blood).

embryonic form of connective tissue that gives rise to other cells (fibroblasts, chondroblast, osteoblast, hemocytoblast)

A type of cell in loose connective tissue that secretes the protein ingredients of the extracellular fibers.

The most widespread connective tissue in the vertebrate body. It binds epithelia to underlying tissues and functions as packing material, holding organs in place. (list 3 types)

semifluid ground substance; all three fiber types loosely interwoven; contains a variety of cells; forms a soft packing around body organs and lamina propria

A specialized form of loose connective tissues that store fat in adipose cells distributed throughout the matrix.

Very thin and branched fibers made of collagen. They form a tightly woven fabric that is continuous with the collagenous fibers of the extracellular matrix.

dense parallel bundles of collagen fibers; few cells, little ground substance; high tensile strength; forms tendons, ligaments, aponeuroses

like regular variety, but fibers are arranged in different planes,; resists tension exerted from many different directions; forms the dermis of the skin and fascia.

Long threads made of the protein elastin. Elastic fibers provide a rubbery quality to the extracellular matrix that complements the nonelastic strength of collagenous fibers. Found in elastic ligaments and blood vessels.

exists as 3 diiferent types

Tough fibers of the extracellular matrix. They are made of collagen that are nonelastic and do not tear easily when pulled lengthwise

firm ground susbatnace containing collagen fibers; high resistance to wear; found in fetal skeleton, at articulating surfaces of bones, and trachea; most abundant type.

coarse parallel collagen fibers; provides flexible support with compressibility; forms intervertebral discs and knee cartilages

elastic fibers predominate; provides flexible support of the external ear and epiglottis

One of many structural units of vertebrate bone, consisting of concentric layers of mineralized bone matrix surrounding lacunae, which contain osteocytes, and a central canal, which contains blood vessels and nerves.

Bone-forming cells that deposit a matrix of collagen.

A type of fibrous connective tissue that joins bones together at joints.

A type of fibrous connective tissue that attaches muscle to bone.

A type of connective tissue with a fluid matrix called plasma in which blood cells are suspended.

A white blood cell; typically functions in immunity, such as phagocytosis or antibody production.

A red blood cell; contains hemoglobin, which functions in transporting oxygen in the circulatory system.

A small enucleated blood cell important in blood clotting; derived from large cells in the bone marrow.

Tissue consisting of long muscle cells that are capable of contracting when stimulated by nerve impulses. (list 3 types)

Striated muscle generally responsible for the voluntary movements of the body. Attached to and move bone skeleton

A type of muscle that forms the contractile wall of the heart. Pumps blood

Smooth muscle found in the walls of the digestive tract, bladder, arteries, and other internal organs. Propels, substances thought the organs

Senses stimuli and transmits signals from one part of the animal to another.

A nerve cell; the fundamental unit of the nervous system, having structure and properties that allow it to conduct signals by taking advantage of the electrical charge across its cell membrane.

A typically long extension, or process, from a neuron that carries nerve impulses away from the cell body toward target cells.

Dendrites

One of usually numerous, short, highly branched processes of a neuron that convey nerve impulses toward the cell body.