TISSUE
"The Four Primary Tissue Types"
Nervous Tissue
Connective Tissue 
Epithelial Tissue 
Muscle Tissue 
Function
Protection - covers the entire body surface
Absorption - Absorbs water and nutrients
Filtration - the lining of kidney tubules filtration waste from blood plasma
Secretion - Various glands secrete hormones, enzymes, saliva, mucus, sweat, etc.
Function
Supporting organs and cells
Transporting nutrients and wastes,
Defending against pathogens
Storing fat, and repairing damaged tissues
Function
Produce movement of the body parts
Function
Produce electrical signals that are transmitted across distances
Responds to stimuli
Carries out communication and integration
Provides electrical insulations to nerve cells and removes debris
Types of Muscular Tissue
Skeletal Muscle Tissue - voluntary muscles composed of muscle fibers.
Smooth Muscle Tissue - involuntary muscles controlled by the Autonomous Nervous System.
Cardiac Muscle Tissue - involuntary muscles and the heart pumps the blood through cardiac contractions.
Types of Connective Tissue
Loose Connective Tissue - present all over the body, where support and elasticity both are needed
Dense Connective Tissue - supports and transmit mechanical forces
Specialized Connective Tissue - help in maintaining correct posture and support internal organs
Areolar Tissue, Adipose Tissue, Reticular Connective Tissue
Dense regular tissue, Dense irregular tissue
Cartilage, Bones, Blood, Lymph
Types of Epithelial Tissue
Squamous Epithelium - Transport by diffusion and where minimal protection is required
Simple Cuboidal Epithelium - Absorption and secretion
Simple Columnar Epithelium - Protection, absorption, mucus secretion and movement in a specific direction
Stratified Squamous Epithelium - Protection
Stratified Cuboidal - Protection of ducts of various glands
Stratified Columnar - Protection and secretion
Pseudostratified Columnar - Protection, secretion and movement of mucous
Types Of Nerves
Motor nerves - responsible to send signals or impulses all the way from spinal cord and brain to all the muscles of the body
Sensory nerves - generate impulses or signals in the contrasting directions from motor neurons
Autonomic nerves - regulate the functions that are not under control, i.e., involuntary