Tissues and their functions/cells

Epithelial Tissues

• Simple Squamous

  • Function: Fast diffusion

  • Location: Lungs, blood vessels

  • Cells: Squamous cells

• Simple Cuboidal

  • Function: Secretion & absorption

  • Location: Kidneys, glands

  • Cells: Cuboidal cells

• Simple Columnar

  • Function: Absorption & secretion

  • Location: Digestive tract, uterus

  • Cells: Columnar cells, goblet cells

• Pseudostratified Columnar

  • Function: Moves mucus

  • Location: Trachea, respiratory tract

  • Cells: Columnar cells, goblet cells, cilia

• Stratified Squamous

  • Function: Protection

  • Location: Skin, mouth, esophagus

  • Cells: Squamous cells

• Transitional

  • Function: Stretching

  • Location: Bladder, ureters

  • Cells: Transitional cells

Connective Tissues

• Areolar

  • Function: Cushion & support

  • Location: Under skin, around organs

  • Cells: Fibroblasts, immune cells

• Adipose

  • Function: Stores fat, insulation

  • Location: Under skin, around organs

  • Cells: Adipocytes

• Reticular

  • Function: Supports immune cells

  • Location: Lymph nodes, spleen

  • Cells: Reticular cells

• Dense Regular

  • Function: Strong in one direction

  • Location: Tendons, ligaments

  • Cells: Fibroblasts

• Dense Irregular

  • Function: Strength in all directions

  • Location: Dermis, joint capsules

  • Cells: Fibroblasts

• Hyaline Cartilage

  • Function: Cushion & support

  • Location: Ends of bones, nose

  • Cells: Chondrocytes

• Elastic Cartilage

  • Function: Flexible support

  • Location: Ear, epiglottis

  • Cells: Chondrocytes

• Fibrocartilage

  • Function: Shock absorption

  • Location: Discs, menisci

  • Cells: Chondrocytes

• Bone (Osseous Tissue)

  • Function: Support, protection

  • Location: Bones

  • Cells: Osteocytes

• Blood

  • Function: Transport nutrients & oxygen

  • Location: Blood vessels

  • Cells: RBCs, WBCs, platelets

Muscle Tissues

• Skeletal Muscle

  • Function: Voluntary movement

  • Location: Attached to bones

  • Cells: Long, striated, multinucleated

• Cardiac Muscle

  • Function: Heart contraction

  • Location: Heart

  • Cells: Striated, branched, intercalated discs

• Smooth Muscle

  • Function: Involuntary movement

  • Location: Organs, blood vessels

  • Cells: Spindle-shaped, no striations

Nervous Tissue

• Nervous Tissue

  • Function: Sends signals

  • Location: Brain, spinal cord, nerves

  • Cells: Neurons, glial cells