Tissue

1. Epithelial Tissue

1.1. Function: o Protection o Absorption o Secretion o Excretion

1.2. Classification based on shape: o Squamous o Cuboidal o Columnar

1.2.1. Classification based on the arrangement: o Simple o Stratified o Pseudostratified o Transitional

1.2.2. Classification based on function: o Mucous Membrane o Exocrine glands o Endocrine glands o Glandular Epithelium o Endothelium o Mesothelium

2. Connective Tissue

2.1. Functions: o Provides protection o Allows movement o Binds body tissues together o Supports the body

2.2. Classifications:

2.2.1. Loose Connective Tissue (LCT)

2.2.2. Dense Connective Tissue (DCT)

2.2.2.1. o Ligaments o Tendons o Aponeuroses o Fasciae

2.3. Structure: o Ground substance o Fibers o Cells

2.3.1. Specialized Connective Tissue

2.3.1.1. o Cartilage o Bones (osseous tissue) o Blood (vascular tissue)

3. Muscle Tissue

3.1. Function is to contract, or shorten, to produce movement

3.2. Classifications: o Smooth Muscle o Cardiac Muscle o Skeletal Muscle

3.3. Structures: o Simple Squamous o Stratified Squamous o Simple Cuboidal o Stratified Cuboidal o Simple Columnar o Stratified Columnar o Pseudostratified Columnar o Transitional

3.4. Structure: o A muscle consists of many muscle tissues bundled together and surrounded by epimysium. The epimysium surrounds bundles of nerve cells that run in long fibers, called fascicles. These fascicles are surrounded by their own protective layer, the perimysium. This layer allows nerves and blood to flow to the individual fibers. Each fiber is then wrapped in an endomysium, another protective layer. As seen in the image below, a muscle is arranged in a basic pattern of bundled fibers separated by protective layers.

4. Nervous Tissue

4.1. Functions: o to receive and conduct electrochemical impulses to and from body parts o Controls and coordinates body activities

4.2. Classification:

4.2.1. Functional classification: o Sensory neurons (afferent) o Motor neurons (efferent) o Interneurons

4.2.2. Structural classification: o Multipolar neurons o Bipolar neurons o Pseudounipolar neurons o Unipolar brush cells:

4.3. Structure: o Nervous tissue is composed of neurons, also called nerve cells and neuroglial cells. Four types of neuroglia found in the CNS are astrocytes, microglial cells, ependymal cells, and oligodendrocytes. Two types of neuroglia found in the PNS are satellite cells and Schwann cells