A&P 1 - Chapter 4: Tissue: The Living Fabric

Tissue

A group of similar cells that perform the same function.

The types of tissues

Epithelial, connective, muscle, and nerve

Two types of epithelial tissue

Covering and lining, and Glandular

Glandular Epithelium

Composed of cells that are specialized to produce and secrete substances.

The two types of Glandular Epithelia

Endocrine and exocrine

Endocrine glands

Ductless glands, they secrete hormones that travel through lymph or blood to target organs.

Exocrine glands

They have ducts, examples include mucous, sweat, oil, and salivary glands.

Connective tissue

most abundant and widely distributed tissue in the body

The four classes of connective tissue

connective tissue proper, cartilage, bone, blood

The Functions of connective tissue

Tissue that supports, protects, and gives structure to other tissues and organs in the body. Connective tissue also stores fat, helps move nutrients and other substances between tissues and organs, and helps repair damaged tissue

The three types of fibers

collagen, elastic, reticular

Collagen

The strongest and most abundant type, they provide high tensile strength.

Elastic

Networks of long, thin, elastin fibers that allow for stretch

Reticular

short, fine, highly branched collagenous fibers

Areloar

A loose connective tissue

It wraps and cushions the organs, it plays an important role in inflammation.

It is located in the lamina propria, this is were the Basal side connects to.

Areolar Tissue

Adipose

A loose connective tissue

Provides reserve food fuel, it also insulates heat, and supports and protect the organs.

It is located under the skin in the hypodermics, around the organs, and around the body (it is fat)

Adipose Tissue

Reticular tissue

A loose connective tissue

The fibers form a soft internal skeleton that supports other cell types including white blood cells, mast cells, and macrophages.

It is located in the Lymphoid organ like the spleen.

Reticular Tissue

Dense Regular

A dense connective tissue

It attaches muscles to bones or muscles, and attaches bones to bones.

Located in the tendons and most ligaments

Dense regular tissue

Tendons

Connect muscle to bone

Ligaments

Connect bone to bone

Dense Irregular

A dense connective Tissue

able to withstand tension exerted in many directions; provides structural strength.

Located in the dermis of the skin, and in the fibrous joint capsule.

Dense irregular tissue

Elastic

A dense connective tissue

Allows recoil of tissue following stretching

Located in the wall of large arteries; within ligaments associated with the vertebral column; within the wall of the bronchial tubes.

Elastic tissue

Cartilage: Hyaline

It supports and reinforces; has resilient cushioning properties; resists compressive stress.

Located on the ends of long bones in joint cavities, the costal cartilages of the ribs; the nose, trachea, and larynx.

Cartilage: Hyaline

Cartilage: Elastic

More elastic that the hyaline cartilage, has more elastic fibers,

It maintains the shape of the structure whiles allowing for flexibility.

The ear is an example

Cartilage: Elastic