Tissues


Epithelia

-Anatomy:
1) A free exposed surface (either on the outside of the body or facing an internal space)
2) A basement membrane (a point of attachment to connective tissue)
3) No blood vessels!

-Physiology
1) Provides physical protection (from abrasions, chemicals, sunlight)
2) Controls permeability. Allows certain substances to move through it while preventing others.
3) Provides sensation. Allows for the feelings of touch.

Stratified Squamous (CP and H)
ashley_'s_squamous.jpg
The function

Stratified Squamous has many layers of cells,and it protects all and most parts of the
epidermis .It protects underlying tissues.

Simple Cuboidal (CP and H)
http://www.carlalbert.edu/assets/images/Math%20and%20Science/simple_cuboidal_epithelium.jpg
http://www.carlalbert.edu/assets/images/Math%20and%20Science/simple_cuboidal_epithelium.jpg

Limited protection, secretion, and or absorption
Simple Columnar (H only)
simple_columnar.jpg

function:protection, secretion, absorption.

Pseudostratified Epithelia (CP and H)
pseudostradified.jpg
Pseudostratified is a muscle tissue that comprizes of a single layer of cells. The nuclei of these cells are disposed at different levels which creates an illusion of cellular stratification.


Glands are made of epithelial tissue and come in two types:
Endocrine: Secretions are released into surrounding tissues and blood.
Exocrine: Secretions are released onto the surface of the body.

Glands come in three different types:
Merocrine: the product is released through the cell membrane. (ex. forehead sweat)
http://www.mhhe.com/biosci/ap/histology_mh/merocrine.gif
http://www.mhhe.com/biosci/ap/histology_mh/merocrine.gif

















Apocrine: the product builds up in one part of the cell and then the cell loses that whole section. Releasing both product and cytosol (ex. mild, armpit sweat)
http://www.websters-online-dictionary.org/images/wiki/wikipedia/commons/thumb/2/2c/Apocrine.jpg/300px-Apocrine.jpg
http://www.websters-online-dictionary.org/images/wiki/wikipedia/commons/thumb/2/2c/Apocrine.jpg/300px-Apocrine.jpg












Holocrine: the product fills the entire cell. The cell the ruptures and dies releasing its contents. (ex. oil)
http://www.mhhe.com/biosci/ap/histology_mh/holocrine.gif
http://www.mhhe.com/biosci/ap/histology_mh/holocrine.gif


















Connective

-Anatomy
1) Protein fibers that exist outside of the cells
2) A fluid that surrounds the fibers (called a ground substance)
These two things are called an extracellular (outside of the cell) matrix.

-Physiology
1) Supporting and protecting. Bones and cartilage.
2) Transporting material. Blood.
3) Storing energy reserves. Fat found in adipose tissue.

Dense Connective (H only)
Dense_Connective.jpg

Adipose Tissue (CP and H)
Brianna_Adipose_Tissue.jpg
Adipose tissue stores fat. The nucleus is found usually pressed against the walls of the tissue.

Blood (CP and H)
Blood.jpg
Blood transports oxygen and carbon dioxide, delivers nutrients and hormones; removes waste products; and assists in defense against disease.
Bone (CP and H)
Bone.jpg
Bone protects inner organs (skull protects the brain), and supports visceral organs such as the pelvis supporting the intestines.

Membranes are combinations of epithelial and connective tissue that carry out several important functions:

Mucous membranes are found in the lining of cavities that exit the body (ex. nose, mouth, anus) they are responsible for defending against bacterial invasion from the outside of the human.

Serous membranes line internal cavities and cover internal organs. This membrane minimizes friction and allows organs to slide against each other without damage.

Cutaneous membranes are the outer membrane of the skin. It is responsible for multiple types of defense.

Synovial membranes are found in the joints of the body. Secrete synovial fluid to reduce friction at the joint between bones.

Muscle

-Anatomy
1) Has actin and myosin bundles

-Physiology
1) Contracts (its length shortens)

Striated Muscle (CP and H)
erin_striated_muscle.jpg

nina_striated_muscle.jpg

Striated muscle is for voluntary muscle movement.

Smooth Muscle (H only)
-smooth muscles like any other muscle contract and relax.
-an involuntary muscle that is made of non-striated cells with single nuclei.
-smooth muscles are found on the inside of internal organs such as the stomach, intestine, bladder, and blood vessels.
smooth_muscle.jpg
Cardiac Muscle (H only)
Makes up cardiac muscle (found primarily in the heart) which contract and constrict in order to function.

Neural

-Anatomy
1) No absolute standout anatomical uniqueness.

-Physiology
1) Conducts electrical impulses from one region of the body to another. Input/Processing/Output

Neuron (CP and H)
http://4.bp.blogspot.com/-I0MOGJIWYyY/Tk1YCbZocZI/AAAAAAAAAxk/ltXaS5dglfE/s1600/Figure+3.jpg
http://4.bp.blogspot.com/-I0MOGJIWYyY/Tk1YCbZocZI/AAAAAAAAAxk/ltXaS5dglfE/s1600/Figure+3.jpg


input, processing and outputting singles from one neuron to another.

Neuroglia (H only)
http://www.nku.edu/~dempseyd/MICROGL.jpg
http://www.nku.edu/~dempseyd/MICROGL.jpg


Neuroglia help neurons by supporting them