Tissue

Graduation Requirements
Biological
Field & Cluster
Health and Bio Science
Equipment/Materials Needed
No special equipment/materials needed
glitterface
Description
The human body is composed of four basic tissue types.
Badge Completion Requirements

Human Tissue

The four types of tissue:

Nerve Tissue

Muscle Tissue

Connective Tissue

Epithelial Tissue

Nerve Tissue

Nervous tissue consists of nerve cells, or neurons, which are specialized for the generation and conduction of electrical events and neuroglia cells.

Neurons consist of three parts: cell body, dendrites, and axon.

The cell body contains the nucleus and serves as the metabolic center of the cell. 

Dendrites are highly branched cytoplasmic extensions of the cell body that receive input from other neurons or from receptor cells.

Axon is a single cytoplasmic extension of the cell body the can be quite long and specialized for conducting nerve impulses

Neuroglial cells do not conduct impulses but instead serve to bind neurons together and influence the nourishment and electrical activity of neurons. 

Epithelial Tissue

Epithelial tissue consists of cells that form membranes which cover and line the body surfaces and of glands which are derived from these membranes.

Three Types of Epithelial Membranes 

Squamous

Cuboidal

Columnar

Squamous are flattened in shape

Cuboidal are nearly square in shape

Columnar are taller than they are wide

 

Epithelial membranes that are only one cell layer thick are known as simple membranes;

Those that are composed of a number of layers are stratified membranes

Epithelial membranes cover all body surfaces and line the cavity of every hollow organ

Epithelial membranes provide a barrier between the internal and external environment

 

Stratified membranes specialize in protection

Simple membranes specialize in transportation

Connective Tissue

Connective tissue is the tissue that connects, supports, binds, or separates other tissues or organs

Generally, connective tissue typically having relatively few cells embedded in an amorphous matrix, often with collagen or other fibers, and including cartilaginous, fatty, and elastic tissues.

Collagen fibers anchor 

4 types of connective tissue 

proper

      dense

cartilage

     no blood

     no tissue     

          hyaline

          elastic

          fibro

bone

     calcified connective tissue

          sponge

          compact 

blood

Muscle Tissues

Muscle tissue is a soft tissue that composes muscles in animal bodies and gives rise to muscles' ability to contract. This is opposed to other components or tissues in muscle such as tendons or perimysium. It is formed during embryonic development through a process known as myogenesis.

picture of body and tissues

Develop and submit a presentation demonstrating your understanding of tissues of the bodies.